Commit 3f7cac41 authored by Ralf Baechle's avatar Ralf Baechle

MIPS: math-emu: Cleanup coding style.

 o Only define variables in the outermost block
 o One empty line at most
 o Format comments as per CodingStyle
 o Update FSF address in licensing term comment
 o Spell FPU and MIPS in all capitals.
 o Remove ####-type of lines in comments.
 o Try to make things a bit most consistent between sp_*.c / dp_*.c files.
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 49548b09
This diff is collapsed.
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,17 +16,15 @@ ...@@ -18,17 +16,15 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y) union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
{ {
int s;
COMPXDP; COMPXDP;
COMPYDP; COMPYDP;
...@@ -69,9 +65,9 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y) ...@@ -69,9 +65,9 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
return x; return x;
/* Infinity handling /*
* Infinity handling
*/ */
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
if (xs == ys) if (xs == ys)
return x; return x;
...@@ -88,15 +84,14 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y) ...@@ -88,15 +84,14 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
return x; return x;
/* Zero handling /*
* Zero handling
*/ */
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
if (xs == ys) if (xs == ys)
return x; return x;
else else
return ieee754dp_zero(ieee754_csr.rm == return ieee754dp_zero(ieee754_csr.rm == IEEE754_RD);
IEEE754_RD);
case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
...@@ -125,20 +120,24 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y) ...@@ -125,20 +120,24 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
assert(xm & DP_HIDDEN_BIT); assert(xm & DP_HIDDEN_BIT);
assert(ym & DP_HIDDEN_BIT); assert(ym & DP_HIDDEN_BIT);
/* provide guard,round and stick bit space */ /*
* Provide guard,round and stick bit space.
*/
xm <<= 3; xm <<= 3;
ym <<= 3; ym <<= 3;
if (xe > ye) { if (xe > ye) {
/* have to shift y fraction right to align /*
* Have to shift y fraction right to align.
*/ */
int s = xe - ye; s = xe - ye;
ym = XDPSRS(ym, s); ym = XDPSRS(ym, s);
ye += s; ye += s;
} else if (ye > xe) { } else if (ye > xe) {
/* have to shift x fraction right to align /*
* Have to shift x fraction right to align.
*/ */
int s = ye - xe; s = ye - xe;
xm = XDPSRS(xm, s); xm = XDPSRS(xm, s);
xe += s; xe += s;
} }
...@@ -146,8 +145,9 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y) ...@@ -146,8 +145,9 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
assert(xe <= DP_EMAX); assert(xe <= DP_EMAX);
if (xs == ys) { if (xs == ys) {
/* generate 28 bit result of adding two 27 bit numbers /*
* leaving result in xm,xs,xe * Generate 28 bit result of adding two 27 bit numbers
* leaving result in xm, xs and xe.
*/ */
xm = xm + ym; xm = xm + ym;
xe = xe; xe = xe;
...@@ -168,15 +168,15 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y) ...@@ -168,15 +168,15 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
xs = ys; xs = ys;
} }
if (xm == 0) if (xm == 0)
return ieee754dp_zero(ieee754_csr.rm == return ieee754dp_zero(ieee754_csr.rm == IEEE754_RD);
IEEE754_RD);
/* normalize to rounding precision */ /*
* Normalize to rounding precision.
*/
while ((xm >> (DP_FBITS + 3)) == 0) { while ((xm >> (DP_FBITS + 3)) == 0) {
xm <<= 1; xm <<= 1;
xe--; xe--;
} }
} }
return ieee754dp_format(xs, xe, xm); return ieee754dp_format(xs, xe, xm);
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,16 @@ ...@@ -18,16 +16,16 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig) int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
{ {
s64 vx;
s64 vy;
COMPXDP; COMPXDP;
COMPYDP; COMPYDP;
...@@ -48,8 +46,8 @@ int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig) ...@@ -48,8 +46,8 @@ int ieee754dp_cmp(union ieee754dp x, union ieee754dp y, int cmp, int sig)
} }
return 0; return 0;
} else { } else {
s64 vx = x.bits; vx = x.bits;
s64 vy = y.bits; vy = y.bits;
if (vx < 0) if (vx < 0)
vx = -vx ^ DP_SIGN_BIT; vx = -vx ^ DP_SIGN_BIT;
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,17 @@ ...@@ -18,16 +16,17 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y) union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
{ {
u64 rm;
int re;
u64 bm;
COMPXDP; COMPXDP;
COMPYDP; COMPYDP;
...@@ -68,9 +67,9 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y) ...@@ -68,9 +67,9 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
return x; return x;
/* Infinity handling /*
* Infinity handling
*/ */
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754dp_indef(); return ieee754dp_indef();
...@@ -85,9 +84,9 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y) ...@@ -85,9 +84,9 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
return ieee754dp_inf(xs ^ ys); return ieee754dp_inf(xs ^ ys);
/* Zero handling /*
* Zero handling
*/ */
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754dp_indef(); return ieee754dp_indef();
...@@ -122,12 +121,10 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y) ...@@ -122,12 +121,10 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
xm <<= 3; xm <<= 3;
ym <<= 3; ym <<= 3;
{
/* now the dirty work */ /* now the dirty work */
u64 rm = 0; rm = 0;
int re = xe - ye; re = xe - ye;
u64 bm;
for (bm = DP_MBIT(DP_FBITS + 2); bm; bm >>= 1) { for (bm = DP_MBIT(DP_FBITS + 2); bm; bm >>= 1) {
if (xm >= ym) { if (xm >= ym) {
...@@ -138,13 +135,15 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y) ...@@ -138,13 +135,15 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
} }
xm <<= 1; xm <<= 1;
} }
rm <<= 1; rm <<= 1;
if (xm) if (xm)
rm |= 1; /* have remainder, set sticky */ rm |= 1; /* have remainder, set sticky */
assert(rm); assert(rm);
/* normalise rm to rounding precision ? /*
* Normalise rm to rounding precision ?
*/ */
while ((rm >> (DP_FBITS + 3)) == 0) { while ((rm >> (DP_FBITS + 3)) == 0) {
rm <<= 1; rm <<= 1;
...@@ -152,5 +151,4 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y) ...@@ -152,5 +151,4 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
} }
return ieee754dp_format(xs == ys ? 0 : 1, re, rm); return ieee754dp_format(xs == ys ? 0 : 1, re, rm);
}
} }
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_fint(int x) union ieee754dp ieee754dp_fint(int x)
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_flong(s64 x) union ieee754dp ieee754dp_flong(s64 x)
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
#include "ieee754dp.h" #include "ieee754dp.h"
...@@ -41,6 +36,7 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x) ...@@ -41,6 +36,7 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
case IEEE754_CLASS_SNAN: case IEEE754_CLASS_SNAN:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754dp_nanxcpt(ieee754dp_indef()); return ieee754dp_nanxcpt(ieee754dp_indef());
case IEEE754_CLASS_QNAN: case IEEE754_CLASS_QNAN:
return ieee754dp_nanxcpt(builddp(xs, return ieee754dp_nanxcpt(builddp(xs,
DP_EMAX + 1 + DP_EBIAS, DP_EMAX + 1 + DP_EBIAS,
...@@ -49,8 +45,10 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x) ...@@ -49,8 +45,10 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
SP_FBITS)))); SP_FBITS))));
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
return ieee754dp_inf(xs); return ieee754dp_inf(xs);
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
return ieee754dp_zero(xs); return ieee754dp_zero(xs);
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
/* normalize */ /* normalize */
while ((xm >> SP_FBITS) == 0) { while ((xm >> SP_FBITS) == 0) {
...@@ -58,11 +56,13 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x) ...@@ -58,11 +56,13 @@ union ieee754dp ieee754dp_fsp(union ieee754sp x)
xe--; xe--;
} }
break; break;
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
break; break;
} }
/* CAN'T possibly overflow,underflow, or need rounding /*
* Can't possibly overflow,underflow, or need rounding
*/ */
/* drop the hidden bit */ /* drop the hidden bit */
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,25 @@ ...@@ -18,16 +16,25 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y) union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
{ {
int re;
int rs;
u64 rm;
unsigned lxm;
unsigned hxm;
unsigned lym;
unsigned hym;
u64 lrm;
u64 hrm;
u64 t;
u64 at;
COMPXDP; COMPXDP;
COMPYDP; COMPYDP;
...@@ -68,8 +75,9 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y) ...@@ -68,8 +75,9 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
return x; return x;
/* Infinity handling */ /*
* Infinity handling
*/
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO):
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
...@@ -107,71 +115,59 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y) ...@@ -107,71 +115,59 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
/* rm = xm * ym, re = xe+ye basically */ /* rm = xm * ym, re = xe+ye basically */
assert(xm & DP_HIDDEN_BIT); assert(xm & DP_HIDDEN_BIT);
assert(ym & DP_HIDDEN_BIT); assert(ym & DP_HIDDEN_BIT);
{
int re = xe + ye; re = xe + ye;
int rs = xs ^ ys; rs = xs ^ ys;
u64 rm;
/* shunt to top of word */ /* shunt to top of word */
xm <<= 64 - (DP_FBITS + 1); xm <<= 64 - (DP_FBITS + 1);
ym <<= 64 - (DP_FBITS + 1); ym <<= 64 - (DP_FBITS + 1);
/* multiply 32bits xm,ym to give high 32bits rm with stickness /*
* Multiply 32 bits xm, ym to give high 32 bits rm with stickness.
*/ */
/* 32 * 32 => 64 */ /* 32 * 32 => 64 */
#define DPXMULT(x, y) ((u64)(x) * (u64)y) #define DPXMULT(x, y) ((u64)(x) * (u64)y)
{ lxm = xm;
unsigned lxm = xm; hxm = xm >> 32;
unsigned hxm = xm >> 32; lym = ym;
unsigned lym = ym; hym = ym >> 32;
unsigned hym = ym >> 32;
u64 lrm;
u64 hrm;
lrm = DPXMULT(lxm, lym); lrm = DPXMULT(lxm, lym);
hrm = DPXMULT(hxm, hym); hrm = DPXMULT(hxm, hym);
{ t = DPXMULT(lxm, hym);
u64 t = DPXMULT(lxm, hym);
{ at = lrm + (t << 32);
u64 at =
lrm + (t << 32);
hrm += at < lrm; hrm += at < lrm;
lrm = at; lrm = at;
}
hrm = hrm + (t >> 32); hrm = hrm + (t >> 32);
}
{ t = DPXMULT(hxm, lym);
u64 t = DPXMULT(hxm, lym);
{ at = lrm + (t << 32);
u64 at =
lrm + (t << 32);
hrm += at < lrm; hrm += at < lrm;
lrm = at; lrm = at;
}
hrm = hrm + (t >> 32); hrm = hrm + (t >> 32);
}
rm = hrm | (lrm != 0); rm = hrm | (lrm != 0);
}
/* /*
* sticky shift down to normal rounding precision * Sticky shift down to normal rounding precision.
*/ */
if ((s64) rm < 0) { if ((s64) rm < 0) {
rm = rm = (rm >> (64 - (DP_FBITS + 1 + 3))) |
(rm >> (64 - (DP_FBITS + 1 + 3))) |
((rm << (DP_FBITS + 1 + 3)) != 0); ((rm << (DP_FBITS + 1 + 3)) != 0);
re++; re++;
} else { } else {
rm = rm = (rm >> (64 - (DP_FBITS + 1 + 3 + 1))) |
(rm >> (64 - (DP_FBITS + 1 + 3 + 1))) |
((rm << (DP_FBITS + 1 + 3 + 1)) != 0); ((rm << (DP_FBITS + 1 + 3 + 1)) != 0);
} }
assert(rm & (DP_HIDDEN_BIT << 3)); assert(rm & (DP_HIDDEN_BIT << 3));
return ieee754dp_format(rs, re, rm); return ieee754dp_format(rs, re, rm);
}
} }
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_neg(union ieee754dp x) union ieee754dp ieee754dp_neg(union ieee754dp x)
...@@ -51,7 +46,6 @@ union ieee754dp ieee754dp_neg(union ieee754dp x) ...@@ -51,7 +46,6 @@ union ieee754dp ieee754dp_neg(union ieee754dp x)
return x; return x;
} }
union ieee754dp ieee754dp_abs(union ieee754dp x) union ieee754dp ieee754dp_abs(union ieee754dp x)
{ {
COMPXDP; COMPXDP;
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
static const unsigned table[] = { static const unsigned table[] = {
...@@ -50,12 +45,15 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) ...@@ -50,12 +45,15 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
case IEEE754_CLASS_QNAN: case IEEE754_CLASS_QNAN:
/* sqrt(Nan) = Nan */ /* sqrt(Nan) = Nan */
return ieee754dp_nanxcpt(x); return ieee754dp_nanxcpt(x);
case IEEE754_CLASS_SNAN: case IEEE754_CLASS_SNAN:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754dp_nanxcpt(ieee754dp_indef()); return ieee754dp_nanxcpt(ieee754dp_indef());
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
/* sqrt(0) = 0 */ /* sqrt(0) = 0 */
return x; return x;
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
if (xs) { if (xs) {
/* sqrt(-Inf) = Nan */ /* sqrt(-Inf) = Nan */
...@@ -64,9 +62,11 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x) ...@@ -64,9 +62,11 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
} }
/* sqrt(+Inf) = Inf */ /* sqrt(+Inf) = Inf */
return x; return x;
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
DPDNORMX; DPDNORMX;
/* fall through */ /* fall through */
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
if (xs) { if (xs) {
/* sqrt(-x) = Nan */ /* sqrt(-x) = Nan */
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,15 @@ ...@@ -18,16 +16,15 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y) union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
{ {
int s;
COMPXDP; COMPXDP;
COMPYDP; COMPYDP;
...@@ -68,9 +65,9 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y) ...@@ -68,9 +65,9 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
return x; return x;
/* Infinity handling /*
* Infinity handling
*/ */
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
if (xs != ys) if (xs != ys)
return x; return x;
...@@ -87,15 +84,14 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y) ...@@ -87,15 +84,14 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
return x; return x;
/* Zero handling /*
* Zero handling
*/ */
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
if (xs != ys) if (xs != ys)
return x; return x;
else else
return ieee754dp_zero(ieee754_csr.rm == return ieee754dp_zero(ieee754_csr.rm == IEEE754_RD);
IEEE754_RD);
case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
...@@ -136,15 +132,17 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y) ...@@ -136,15 +132,17 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
ym <<= 3; ym <<= 3;
if (xe > ye) { if (xe > ye) {
/* have to shift y fraction right to align /*
* Have to shift y fraction right to align
*/ */
int s = xe - ye; s = xe - ye;
ym = XDPSRS(ym, s); ym = XDPSRS(ym, s);
ye += s; ye += s;
} else if (ye > xe) { } else if (ye > xe) {
/* have to shift x fraction right to align /*
* Have to shift x fraction right to align
*/ */
int s = ye - xe; s = ye - xe;
xm = XDPSRS(xm, s); xm = XDPSRS(xm, s);
xe += s; xe += s;
} }
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,18 @@ ...@@ -18,16 +16,18 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
int ieee754dp_tint(union ieee754dp x) int ieee754dp_tint(union ieee754dp x)
{ {
u64 residue;
int round;
int sticky;
int odd;
COMPXDP; COMPXDP;
ieee754_clearcx(); ieee754_clearcx();
...@@ -41,8 +41,10 @@ int ieee754dp_tint(union ieee754dp x) ...@@ -41,8 +41,10 @@ int ieee754dp_tint(union ieee754dp x)
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754si_indef(); return ieee754si_indef();
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
return 0; return 0;
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
break; break;
...@@ -57,11 +59,6 @@ int ieee754dp_tint(union ieee754dp x) ...@@ -57,11 +59,6 @@ int ieee754dp_tint(union ieee754dp x)
if (xe > DP_FBITS) { if (xe > DP_FBITS) {
xm <<= xe - DP_FBITS; xm <<= xe - DP_FBITS;
} else if (xe < DP_FBITS) { } else if (xe < DP_FBITS) {
u64 residue;
int round;
int sticky;
int odd;
if (xe < -1) { if (xe < -1) {
residue = xm; residue = xm;
round = 0; round = 0;
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,18 @@ ...@@ -18,16 +16,18 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754dp.h" #include "ieee754dp.h"
s64 ieee754dp_tlong(union ieee754dp x) s64 ieee754dp_tlong(union ieee754dp x)
{ {
u64 residue;
int round;
int sticky;
int odd;
COMPXDP; COMPXDP;
ieee754_clearcx(); ieee754_clearcx();
...@@ -41,8 +41,10 @@ s64 ieee754dp_tlong(union ieee754dp x) ...@@ -41,8 +41,10 @@ s64 ieee754dp_tlong(union ieee754dp x)
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754di_indef(); return ieee754di_indef();
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
return 0; return 0;
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
break; break;
...@@ -60,11 +62,6 @@ s64 ieee754dp_tlong(union ieee754dp x) ...@@ -60,11 +62,6 @@ s64 ieee754dp_tlong(union ieee754dp x)
if (xe > DP_FBITS) { if (xe > DP_FBITS) {
xm <<= xe - DP_FBITS; xm <<= xe - DP_FBITS;
} else if (xe < DP_FBITS) { } else if (xe < DP_FBITS) {
u64 residue;
int round;
int sticky;
int odd;
if (xe < -1) { if (xe < -1) {
residue = xm; residue = xm;
round = 0; round = 0;
......
...@@ -10,8 +10,6 @@ ...@@ -10,8 +10,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -23,9 +21,7 @@ ...@@ -23,9 +21,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include <linux/compiler.h> #include <linux/compiler.h>
...@@ -34,8 +30,9 @@ ...@@ -34,8 +30,9 @@
#include "ieee754sp.h" #include "ieee754sp.h"
#include "ieee754dp.h" #include "ieee754dp.h"
/* special constants /*
*/ * Special constants
*/
#define DPCNST(s, b, m) \ #define DPCNST(s, b, m) \
{ \ { \
......
...@@ -13,7 +13,7 @@ ...@@ -13,7 +13,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
* *
* Nov 7, 2000 * Nov 7, 2000
* Modification to allow integration with Linux kernel * Modification to allow integration with Linux kernel
......
...@@ -16,7 +16,7 @@ ...@@ -16,7 +16,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
* *
* Nov 7, 2000 * Nov 7, 2000
* Modified to build and operate in Linux kernel environment. * Modified to build and operate in Linux kernel environment.
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,9 +16,7 @@ ...@@ -18,9 +16,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include <linux/compiler.h> #include <linux/compiler.h>
......
...@@ -6,8 +6,6 @@ ...@@ -6,8 +6,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -19,9 +17,7 @@ ...@@ -19,9 +17,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include <linux/compiler.h> #include <linux/compiler.h>
......
...@@ -6,8 +6,6 @@ ...@@ -6,8 +6,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -19,9 +17,7 @@ ...@@ -19,9 +17,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#ifndef __IEEE754INT_H #ifndef __IEEE754INT_H
#define __IEEE754INT_H #define __IEEE754INT_H
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,9 +16,7 @@ ...@@ -18,9 +16,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include <linux/compiler.h> #include <linux/compiler.h>
......
...@@ -6,8 +6,6 @@ ...@@ -6,8 +6,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -19,9 +17,7 @@ ...@@ -19,9 +17,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include <linux/compiler.h> #include <linux/compiler.h>
......
...@@ -13,7 +13,7 @@ ...@@ -13,7 +13,7 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
* *
* Routines corresponding to Linux kernel FP context * Routines corresponding to Linux kernel FP context
* manipulation primitives for the Algorithmics MIPS * manipulation primitives for the Algorithmics MIPS
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,15 @@ ...@@ -18,16 +16,15 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y) union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
{ {
int s;
COMPXSP; COMPXSP;
COMPYSP; COMPYSP;
...@@ -68,9 +65,9 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y) ...@@ -68,9 +65,9 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
return x; return x;
/* Infinity handling /*
* Infinity handling
*/ */
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
if (xs == ys) if (xs == ys)
return x; return x;
...@@ -87,15 +84,14 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y) ...@@ -87,15 +84,14 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
return x; return x;
/* Zero handling /*
* Zero handling
*/ */
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
if (xs == ys) if (xs == ys)
return x; return x;
else else
return ieee754sp_zero(ieee754_csr.rm == return ieee754sp_zero(ieee754_csr.rm == IEEE754_RD);
IEEE754_RD);
case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
...@@ -108,6 +104,8 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y) ...@@ -108,6 +104,8 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
SPDNORMX; SPDNORMX;
/* FALL THROUGH */
case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
SPDNORMY; SPDNORMY;
break; break;
...@@ -122,27 +120,32 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y) ...@@ -122,27 +120,32 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
assert(xm & SP_HIDDEN_BIT); assert(xm & SP_HIDDEN_BIT);
assert(ym & SP_HIDDEN_BIT); assert(ym & SP_HIDDEN_BIT);
/* provide guard,round and stick bit space */ /*
* Provide guard, round and stick bit space.
*/
xm <<= 3; xm <<= 3;
ym <<= 3; ym <<= 3;
if (xe > ye) { if (xe > ye) {
/* have to shift y fraction right to align /*
* Have to shift y fraction right to align.
*/ */
int s = xe - ye; s = xe - ye;
SPXSRSYn(s); SPXSRSYn(s);
} else if (ye > xe) { } else if (ye > xe) {
/* have to shift x fraction right to align /*
* Have to shift x fraction right to align.
*/ */
int s = ye - xe; s = ye - xe;
SPXSRSXn(s); SPXSRSXn(s);
} }
assert(xe == ye); assert(xe == ye);
assert(xe <= SP_EMAX); assert(xe <= SP_EMAX);
if (xs == ys) { if (xs == ys) {
/* generate 28 bit result of adding two 27 bit numbers /*
* leaving result in xm,xs,xe * Generate 28 bit result of adding two 27 bit numbers
* leaving result in xm, xs and xe.
*/ */
xm = xm + ym; xm = xm + ym;
xe = xe; xe = xe;
...@@ -162,15 +165,15 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y) ...@@ -162,15 +165,15 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
xs = ys; xs = ys;
} }
if (xm == 0) if (xm == 0)
return ieee754sp_zero(ieee754_csr.rm == return ieee754sp_zero(ieee754_csr.rm == IEEE754_RD);
IEEE754_RD);
/* normalize in extended single precision */ /*
* Normalize in extended single precision
*/
while ((xm >> (SP_FBITS + 3)) == 0) { while ((xm >> (SP_FBITS + 3)) == 0) {
xm <<= 1; xm <<= 1;
xe--; xe--;
} }
} }
return ieee754sp_format(xs, xe, xm); return ieee754sp_format(xs, xe, xm);
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,16 @@ ...@@ -18,16 +16,16 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig) int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
{ {
int vx;
int vy;
COMPXSP; COMPXSP;
COMPYSP; COMPYSP;
...@@ -48,8 +46,8 @@ int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig) ...@@ -48,8 +46,8 @@ int ieee754sp_cmp(union ieee754sp x, union ieee754sp y, int cmp, int sig)
} }
return 0; return 0;
} else { } else {
int vx = x.bits; vx = x.bits;
int vy = y.bits; vy = y.bits;
if (vx < 0) if (vx < 0)
vx = -vx ^ SP_SIGN_BIT; vx = -vx ^ SP_SIGN_BIT;
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,17 @@ ...@@ -18,16 +16,17 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y) union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
{ {
unsigned rm;
int re;
unsigned bm;
COMPXSP; COMPXSP;
COMPYSP; COMPYSP;
...@@ -68,9 +67,9 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y) ...@@ -68,9 +67,9 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
return x; return x;
/* Infinity handling /*
* Infinity handling
*/ */
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754sp_indef(); return ieee754sp_indef();
...@@ -85,9 +84,9 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y) ...@@ -85,9 +84,9 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
return ieee754sp_inf(xs ^ ys); return ieee754sp_inf(xs ^ ys);
/* Zero handling /*
* Zero handling
*/ */
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754sp_indef(); return ieee754sp_indef();
...@@ -122,12 +121,10 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y) ...@@ -122,12 +121,10 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
xm <<= 3; xm <<= 3;
ym <<= 3; ym <<= 3;
{
/* now the dirty work */ /* now the dirty work */
unsigned rm = 0; rm = 0;
int re = xe - ye; re = xe - ye;
unsigned bm;
for (bm = SP_MBIT(SP_FBITS + 2); bm; bm >>= 1) { for (bm = SP_MBIT(SP_FBITS + 2); bm; bm >>= 1) {
if (xm >= ym) { if (xm >= ym) {
...@@ -138,6 +135,7 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y) ...@@ -138,6 +135,7 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
} }
xm <<= 1; xm <<= 1;
} }
rm <<= 1; rm <<= 1;
if (xm) if (xm)
rm |= 1; /* have remainder, set sticky */ rm |= 1; /* have remainder, set sticky */
...@@ -152,5 +150,4 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y) ...@@ -152,5 +150,4 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
} }
return ieee754sp_format(xs == ys ? 0 : 1, re, rm); return ieee754sp_format(xs == ys ? 0 : 1, re, rm);
}
} }
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,17 +16,16 @@ ...@@ -18,17 +16,16 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
#include "ieee754dp.h" #include "ieee754dp.h"
union ieee754sp ieee754sp_fdp(union ieee754dp x) union ieee754sp ieee754sp_fdp(union ieee754dp x)
{ {
u32 rm;
COMPXDP; COMPXDP;
union ieee754sp nan; union ieee754sp nan;
...@@ -42,16 +39,20 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x) ...@@ -42,16 +39,20 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
case IEEE754_CLASS_SNAN: case IEEE754_CLASS_SNAN:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754sp_nanxcpt(ieee754sp_indef()); return ieee754sp_nanxcpt(ieee754sp_indef());
case IEEE754_CLASS_QNAN: case IEEE754_CLASS_QNAN:
nan = buildsp(xs, SP_EMAX + 1 + SP_EBIAS, (u32) nan = buildsp(xs, SP_EMAX + 1 + SP_EBIAS, (u32)
(xm >> (DP_FBITS - SP_FBITS))); (xm >> (DP_FBITS - SP_FBITS)));
if (!ieee754sp_isnan(nan)) if (!ieee754sp_isnan(nan))
nan = ieee754sp_indef(); nan = ieee754sp_indef();
return ieee754sp_nanxcpt(nan); return ieee754sp_nanxcpt(nan);
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
return ieee754sp_inf(xs); return ieee754sp_inf(xs);
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
return ieee754sp_zero(xs); return ieee754sp_zero(xs);
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
/* can't possibly be sp representable */ /* can't possibly be sp representable */
ieee754_setcx(IEEE754_UNDERFLOW); ieee754_setcx(IEEE754_UNDERFLOW);
...@@ -60,18 +61,16 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x) ...@@ -60,18 +61,16 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
(ieee754_csr.rm == IEEE754_RD && xs)) (ieee754_csr.rm == IEEE754_RD && xs))
return ieee754sp_mind(xs); return ieee754sp_mind(xs);
return ieee754sp_zero(xs); return ieee754sp_zero(xs);
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
break; break;
} }
{ /*
u32 rm; * Convert from DP_FBITS to SP_FBITS+3 with sticky right shift.
/* convert from DP_FBITS to SP_FBITS+3 with sticky right shift
*/ */
rm = (xm >> (DP_FBITS - (SP_FBITS + 3))) | rm = (xm >> (DP_FBITS - (SP_FBITS + 3))) |
((xm << (64 - (DP_FBITS - (SP_FBITS + 3)))) != 0); ((xm << (64 - (DP_FBITS - (SP_FBITS + 3)))) != 0);
return ieee754sp_format(xs, xe, rm); return ieee754sp_format(xs, xe, rm);
}
} }
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_fint(int x) union ieee754sp ieee754sp_fint(int x)
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_flong(s64 x) union ieee754sp ieee754sp_flong(s64 x)
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,25 @@ ...@@ -18,16 +16,25 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y) union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
{ {
int re;
int rs;
unsigned rm;
unsigned short lxm;
unsigned short hxm;
unsigned short lym;
unsigned short hym;
unsigned lrm;
unsigned hrm;
unsigned t;
unsigned at;
COMPXSP; COMPXSP;
COMPYSP; COMPYSP;
...@@ -68,8 +75,9 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y) ...@@ -68,8 +75,9 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
return x; return x;
/* Infinity handling */ /*
* Infinity handling
*/
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_ZERO):
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_INF):
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
...@@ -108,52 +116,40 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y) ...@@ -108,52 +116,40 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
assert(xm & SP_HIDDEN_BIT); assert(xm & SP_HIDDEN_BIT);
assert(ym & SP_HIDDEN_BIT); assert(ym & SP_HIDDEN_BIT);
{ re = xe + ye;
int re = xe + ye; rs = xs ^ ys;
int rs = xs ^ ys;
unsigned rm;
/* shunt to top of word */ /* shunt to top of word */
xm <<= 32 - (SP_FBITS + 1); xm <<= 32 - (SP_FBITS + 1);
ym <<= 32 - (SP_FBITS + 1); ym <<= 32 - (SP_FBITS + 1);
/* multiply 32bits xm,ym to give high 32bits rm with stickness /*
* Multiply 32 bits xm, ym to give high 32 bits rm with stickness.
*/ */
{ lxm = xm & 0xffff;
unsigned short lxm = xm & 0xffff; hxm = xm >> 16;
unsigned short hxm = xm >> 16; lym = ym & 0xffff;
unsigned short lym = ym & 0xffff; hym = ym >> 16;
unsigned short hym = ym >> 16;
unsigned lrm;
unsigned hrm;
lrm = lxm * lym; /* 16 * 16 => 32 */ lrm = lxm * lym; /* 16 * 16 => 32 */
hrm = hxm * hym; /* 16 * 16 => 32 */ hrm = hxm * hym; /* 16 * 16 => 32 */
{ t = lxm * hym; /* 16 * 16 => 32 */
unsigned t = lxm * hym; /* 16 * 16 => 32 */ at = lrm + (t << 16);
{
unsigned at = lrm + (t << 16);
hrm += at < lrm; hrm += at < lrm;
lrm = at; lrm = at;
}
hrm = hrm + (t >> 16); hrm = hrm + (t >> 16);
}
{ t = hxm * lym; /* 16 * 16 => 32 */
unsigned t = hxm * lym; /* 16 * 16 => 32 */ at = lrm + (t << 16);
{
unsigned at = lrm + (t << 16);
hrm += at < lrm; hrm += at < lrm;
lrm = at; lrm = at;
}
hrm = hrm + (t >> 16); hrm = hrm + (t >> 16);
}
rm = hrm | (lrm != 0); rm = hrm | (lrm != 0);
}
/* /*
* sticky shift down to normal rounding precision * Sticky shift down to normal rounding precision.
*/ */
if ((int) rm < 0) { if ((int) rm < 0) {
rm = (rm >> (32 - (SP_FBITS + 1 + 3))) | rm = (rm >> (32 - (SP_FBITS + 1 + 3))) |
...@@ -166,5 +162,4 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y) ...@@ -166,5 +162,4 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
assert(rm & (SP_HIDDEN_BIT << 3)); assert(rm & (SP_HIDDEN_BIT << 3));
return ieee754sp_format(rs, re, rm); return ieee754sp_format(rs, re, rm);
}
} }
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_neg(union ieee754sp x) union ieee754sp ieee754sp_neg(union ieee754sp x)
...@@ -51,7 +46,6 @@ union ieee754sp ieee754sp_neg(union ieee754sp x) ...@@ -51,7 +46,6 @@ union ieee754sp ieee754sp_neg(union ieee754sp x)
return x; return x;
} }
union ieee754sp ieee754sp_abs(union ieee754sp x) union ieee754sp ieee754sp_abs(union ieee754sp x)
{ {
COMPXSP; COMPXSP;
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,12 +16,9 @@ ...@@ -18,12 +16,9 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_sqrt(union ieee754sp x) union ieee754sp ieee754sp_sqrt(union ieee754sp x)
...@@ -43,12 +38,15 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x) ...@@ -43,12 +38,15 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
case IEEE754_CLASS_QNAN: case IEEE754_CLASS_QNAN:
/* sqrt(Nan) = Nan */ /* sqrt(Nan) = Nan */
return ieee754sp_nanxcpt(x); return ieee754sp_nanxcpt(x);
case IEEE754_CLASS_SNAN: case IEEE754_CLASS_SNAN:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754sp_nanxcpt(ieee754sp_indef()); return ieee754sp_nanxcpt(ieee754sp_indef());
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
/* sqrt(0) = 0 */ /* sqrt(0) = 0 */
return x; return x;
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
if (xs) { if (xs) {
/* sqrt(-Inf) = Nan */ /* sqrt(-Inf) = Nan */
...@@ -57,6 +55,7 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x) ...@@ -57,6 +55,7 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
} }
/* sqrt(+Inf) = Inf */ /* sqrt(+Inf) = Inf */
return x; return x;
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
if (xs) { if (xs) {
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,15 @@ ...@@ -18,16 +16,15 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y) union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
{ {
int s;
COMPXSP; COMPXSP;
COMPYSP; COMPYSP;
...@@ -68,9 +65,9 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y) ...@@ -68,9 +65,9 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
return x; return x;
/* Infinity handling /*
* Infinity handling
*/ */
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_INF):
if (xs != ys) if (xs != ys)
return x; return x;
...@@ -87,15 +84,14 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y) ...@@ -87,15 +84,14 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM): case CLPAIR(IEEE754_CLASS_INF, IEEE754_CLASS_DNORM):
return x; return x;
/* Zero handling /*
* Zero handling
*/ */
case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_ZERO, IEEE754_CLASS_ZERO):
if (xs != ys) if (xs != ys)
return x; return x;
else else
return ieee754sp_zero(ieee754_csr.rm == return ieee754sp_zero(ieee754_csr.rm == IEEE754_RD);
IEEE754_RD);
case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_ZERO):
case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO): case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_ZERO):
...@@ -133,14 +129,16 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y) ...@@ -133,14 +129,16 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
ym <<= 3; ym <<= 3;
if (xe > ye) { if (xe > ye) {
/* have to shift y fraction right to align /*
* have to shift y fraction right to align
*/ */
int s = xe - ye; s = xe - ye;
SPXSRSYn(s); SPXSRSYn(s);
} else if (ye > xe) { } else if (ye > xe) {
/* have to shift x fraction right to align /*
* have to shift x fraction right to align
*/ */
int s = ye - xe; s = ye - xe;
SPXSRSXn(s); SPXSRSXn(s);
} }
assert(xe == ye); assert(xe == ye);
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,16 +16,18 @@ ...@@ -18,16 +16,18 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
int ieee754sp_tint(union ieee754sp x) int ieee754sp_tint(union ieee754sp x)
{ {
u32 residue;
int round;
int sticky;
int odd;
COMPXSP; COMPXSP;
ieee754_clearcx(); ieee754_clearcx();
...@@ -41,8 +41,10 @@ int ieee754sp_tint(union ieee754sp x) ...@@ -41,8 +41,10 @@ int ieee754sp_tint(union ieee754sp x)
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754si_indef(); return ieee754si_indef();
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
return 0; return 0;
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
break; break;
...@@ -60,11 +62,6 @@ int ieee754sp_tint(union ieee754sp x) ...@@ -60,11 +62,6 @@ int ieee754sp_tint(union ieee754sp x)
if (xe > SP_FBITS) { if (xe > SP_FBITS) {
xm <<= xe - SP_FBITS; xm <<= xe - SP_FBITS;
} else { } else {
u32 residue;
int round;
int sticky;
int odd;
if (xe < -1) { if (xe < -1) {
residue = xm; residue = xm;
round = 0; round = 0;
......
...@@ -5,8 +5,6 @@ ...@@ -5,8 +5,6 @@
* MIPS floating point support * MIPS floating point support
* Copyright (C) 1994-2000 Algorithmics Ltd. * Copyright (C) 1994-2000 Algorithmics Ltd.
* *
* ########################################################################
*
* This program is free software; you can distribute it and/or modify it * This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as * under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation. * published by the Free Software Foundation.
...@@ -18,17 +16,19 @@ ...@@ -18,17 +16,19 @@
* *
* You should have received a copy of the GNU General Public License along * You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., * with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* ########################################################################
*/ */
#include "ieee754sp.h" #include "ieee754sp.h"
#include "ieee754dp.h" #include "ieee754dp.h"
s64 ieee754sp_tlong(union ieee754sp x) s64 ieee754sp_tlong(union ieee754sp x)
{ {
u32 residue;
int round;
int sticky;
int odd;
COMPXDP; /* <-- need 64-bit mantissa tmp */ COMPXDP; /* <-- need 64-bit mantissa tmp */
ieee754_clearcx(); ieee754_clearcx();
...@@ -42,8 +42,10 @@ s64 ieee754sp_tlong(union ieee754sp x) ...@@ -42,8 +42,10 @@ s64 ieee754sp_tlong(union ieee754sp x)
case IEEE754_CLASS_INF: case IEEE754_CLASS_INF:
ieee754_setcx(IEEE754_INVALID_OPERATION); ieee754_setcx(IEEE754_INVALID_OPERATION);
return ieee754di_indef(); return ieee754di_indef();
case IEEE754_CLASS_ZERO: case IEEE754_CLASS_ZERO:
return 0; return 0;
case IEEE754_CLASS_DNORM: case IEEE754_CLASS_DNORM:
case IEEE754_CLASS_NORM: case IEEE754_CLASS_NORM:
break; break;
...@@ -61,11 +63,6 @@ s64 ieee754sp_tlong(union ieee754sp x) ...@@ -61,11 +63,6 @@ s64 ieee754sp_tlong(union ieee754sp x)
if (xe > SP_FBITS) { if (xe > SP_FBITS) {
xm <<= xe - SP_FBITS; xm <<= xe - SP_FBITS;
} else if (xe < SP_FBITS) { } else if (xe < SP_FBITS) {
u32 residue;
int round;
int sticky;
int odd;
if (xe < -1) { if (xe < -1) {
residue = xm; residue = xm;
round = 0; round = 0;
......
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