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ccan
Commits
86b394d9
Commit
86b394d9
authored
Jun 07, 2009
by
Rusty Russell
Browse files
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Plain Diff
Implement a (poor?) 64-bit CRC.
parent
2a9b3284
Changes
2
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Showing
2 changed files
with
110 additions
and
91 deletions
+110
-91
ccan/crc/_info
ccan/crc/_info
+2
-0
ccan/crc/crc.c
ccan/crc/crc.c
+108
-91
No files found.
ccan/crc/_info
View file @
86b394d9
#include <string.h>
#include <string.h>
#include <stdio.h>
/**
/**
* crc - routines for crc of bytes
* crc - routines for crc of bytes
...
@@ -35,6 +36,7 @@ int main(int argc, char *argv[])
...
@@ -35,6 +36,7 @@ int main(int argc, char *argv[])
return 1;
return 1;
if (strcmp(argv[1], "depends") == 0) {
if (strcmp(argv[1], "depends") == 0) {
printf("ccan/array_size\n");
return 0;
return 0;
}
}
...
...
ccan/crc/crc.c
View file @
86b394d9
...
@@ -24,6 +24,7 @@
...
@@ -24,6 +24,7 @@
*/
*/
#include "crc.h"
#include "crc.h"
#include <ccan/array_size/array_size.h>
#include <stdbool.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdlib.h>
...
@@ -185,106 +186,122 @@ const uint32_t *crc32_ieee_table(void)
...
@@ -185,106 +186,122 @@ const uint32_t *crc32_ieee_table(void)
return
crc32_ieee_tab
;
return
crc32_ieee_tab
;
}
}
static
uint64_t
crc64_tab
[]
=
{
/* We only keep the upper 16 bits of the table: the lower 48 are always 0 */
0x0000000000000000ULL
,
0x01b0000000000000ULL
,
0x0360000000000000ULL
,
static
uint16_t
crc64_tab
[]
=
{
0x02d0000000000000ULL
,
0x06c0000000000000ULL
,
0x0770000000000000ULL
,
0x0000
,
0x01b0
,
0x0360
,
0x05a0000000000000ULL
,
0x0410000000000000ULL
,
0x0d80000000000000ULL
,
0x02d0
,
0x06c0
,
0x0770
,
0x0c30000000000000ULL
,
0x0ee0000000000000ULL
,
0x0f50000000000000ULL
,
0x05a0
,
0x0410
,
0x0d80
,
0x0b40000000000000ULL
,
0x0af0000000000000ULL
,
0x0820000000000000ULL
,
0x0c30
,
0x0ee0
,
0x0f50
,
0x0990000000000000ULL
,
0x1b00000000000000ULL
,
0x1ab0000000000000ULL
,
0x0b40
,
0x0af0
,
0x0820
,
0x1860000000000000ULL
,
0x19d0000000000000ULL
,
0x1dc0000000000000ULL
,
0x0990
,
0x1b00
,
0x1ab0
,
0x1c70000000000000ULL
,
0x1ea0000000000000ULL
,
0x1f10000000000000ULL
,
0x1860
,
0x19d0
,
0x1dc0
,
0x1680000000000000ULL
,
0x1730000000000000ULL
,
0x15e0000000000000ULL
,
0x1c70
,
0x1ea0
,
0x1f10
,
0x1450000000000000ULL
,
0x1040000000000000ULL
,
0x11f0000000000000ULL
,
0x1680
,
0x1730
,
0x15e0
,
0x1320000000000000ULL
,
0x1290000000000000ULL
,
0x3600000000000000ULL
,
0x1450
,
0x1040
,
0x11f0
,
0x37b0000000000000ULL
,
0x3560000000000000ULL
,
0x34d0000000000000ULL
,
0x1320
,
0x1290
,
0x3600
,
0x30c0000000000000ULL
,
0x3170000000000000ULL
,
0x33a0000000000000ULL
,
0x37b0
,
0x3560
,
0x34d0
,
0x3210000000000000ULL
,
0x3b80000000000000ULL
,
0x3a30000000000000ULL
,
0x30c0
,
0x3170
,
0x33a0
,
0x38e0000000000000ULL
,
0x3950000000000000ULL
,
0x3d40000000000000ULL
,
0x3210
,
0x3b80
,
0x3a30
,
0x3cf0000000000000ULL
,
0x3e20000000000000ULL
,
0x3f90000000000000ULL
,
0x38e0
,
0x3950
,
0x3d40
,
0x2d00000000000000ULL
,
0x2cb0000000000000ULL
,
0x2e60000000000000ULL
,
0x3cf0
,
0x3e20
,
0x3f90
,
0x2fd0000000000000ULL
,
0x2bc0000000000000ULL
,
0x2a70000000000000ULL
,
0x2d00
,
0x2cb0
,
0x2e60
,
0x28a0000000000000ULL
,
0x2910000000000000ULL
,
0x2080000000000000ULL
,
0x2fd0
,
0x2bc0
,
0x2a70
,
0x2130000000000000ULL
,
0x23e0000000000000ULL
,
0x2250000000000000ULL
,
0x28a0
,
0x2910
,
0x2080
,
0x2640000000000000ULL
,
0x27f0000000000000ULL
,
0x2520000000000000ULL
,
0x2130
,
0x23e0
,
0x2250
,
0x2490000000000000ULL
,
0x6c00000000000000ULL
,
0x6db0000000000000ULL
,
0x2640
,
0x27f0
,
0x2520
,
0x6f60000000000000ULL
,
0x6ed0000000000000ULL
,
0x6ac0000000000000ULL
,
0x2490
,
0x6c00
,
0x6db0
,
0x6b70000000000000ULL
,
0x69a0000000000000ULL
,
0x6810000000000000ULL
,
0x6f60
,
0x6ed0
,
0x6ac0
,
0x6180000000000000ULL
,
0x6030000000000000ULL
,
0x62e0000000000000ULL
,
0x6b70
,
0x69a0
,
0x6810
,
0x6350000000000000ULL
,
0x6740000000000000ULL
,
0x66f0000000000000ULL
,
0x6180
,
0x6030
,
0x62e0
,
0x6420000000000000ULL
,
0x6590000000000000ULL
,
0x7700000000000000ULL
,
0x6350
,
0x6740
,
0x66f0
,
0x76b0000000000000ULL
,
0x7460000000000000ULL
,
0x75d0000000000000ULL
,
0x6420
,
0x6590
,
0x7700
,
0x71c0000000000000ULL
,
0x7070000000000000ULL
,
0x72a0000000000000ULL
,
0x76b0
,
0x7460
,
0x75d0
,
0x7310000000000000ULL
,
0x7a80000000000000ULL
,
0x7b30000000000000ULL
,
0x71c0
,
0x7070
,
0x72a0
,
0x79e0000000000000ULL
,
0x7850000000000000ULL
,
0x7c40000000000000ULL
,
0x7310
,
0x7a80
,
0x7b30
,
0x7df0000000000000ULL
,
0x7f20000000000000ULL
,
0x7e90000000000000ULL
,
0x79e0
,
0x7850
,
0x7c40
,
0x5a00000000000000ULL
,
0x5bb0000000000000ULL
,
0x5960000000000000ULL
,
0x7df0
,
0x7f20
,
0x7e90
,
0x58d0000000000000ULL
,
0x5cc0000000000000ULL
,
0x5d70000000000000ULL
,
0x5a00
,
0x5bb0
,
0x5960
,
0x5fa0000000000000ULL
,
0x5e10000000000000ULL
,
0x5780000000000000ULL
,
0x58d0
,
0x5cc0
,
0x5d70
,
0x5630000000000000ULL
,
0x54e0000000000000ULL
,
0x5550000000000000ULL
,
0x5fa0
,
0x5e10
,
0x5780
,
0x5140000000000000ULL
,
0x50f0000000000000ULL
,
0x5220000000000000ULL
,
0x5630
,
0x54e0
,
0x5550
,
0x5390000000000000ULL
,
0x4100000000000000ULL
,
0x40b0000000000000ULL
,
0x5140
,
0x50f0
,
0x5220
,
0x4260000000000000ULL
,
0x43d0000000000000ULL
,
0x47c0000000000000ULL
,
0x5390
,
0x4100
,
0x40b0
,
0x4670000000000000ULL
,
0x44a0000000000000ULL
,
0x4510000000000000ULL
,
0x4260
,
0x43d0
,
0x47c0
,
0x4c80000000000000ULL
,
0x4d30000000000000ULL
,
0x4fe0000000000000ULL
,
0x4670
,
0x44a0
,
0x4510
,
0x4e50000000000000ULL
,
0x4a40000000000000ULL
,
0x4bf0000000000000ULL
,
0x4c80
,
0x4d30
,
0x4fe0
,
0x4920000000000000ULL
,
0x4890000000000000ULL
,
0xd800000000000000ULL
,
0x4e50
,
0x4a40
,
0x4bf0
,
0xd9b0000000000000ULL
,
0xdb60000000000000ULL
,
0xdad0000000000000ULL
,
0x4920
,
0x4890
,
0xd800
,
0xdec0000000000000ULL
,
0xdf70000000000000ULL
,
0xdda0000000000000ULL
,
0xd9b0
,
0xdb60
,
0xdad0
,
0xdc10000000000000ULL
,
0xd580000000000000ULL
,
0xd430000000000000ULL
,
0xdec0
,
0xdf70
,
0xdda0
,
0xd6e0000000000000ULL
,
0xd750000000000000ULL
,
0xd340000000000000ULL
,
0xdc10
,
0xd580
,
0xd430
,
0xd2f0000000000000ULL
,
0xd020000000000000ULL
,
0xd190000000000000ULL
,
0xd6e0
,
0xd750
,
0xd340
,
0xc300000000000000ULL
,
0xc2b0000000000000ULL
,
0xc060000000000000ULL
,
0xd2f0
,
0xd020
,
0xd190
,
0xc1d0000000000000ULL
,
0xc5c0000000000000ULL
,
0xc470000000000000ULL
,
0xc300
,
0xc2b0
,
0xc060
,
0xc6a0000000000000ULL
,
0xc710000000000000ULL
,
0xce80000000000000ULL
,
0xc1d0
,
0xc5c0
,
0xc470
,
0xcf30000000000000ULL
,
0xcde0000000000000ULL
,
0xcc50000000000000ULL
,
0xc6a0
,
0xc710
,
0xce80
,
0xc840000000000000ULL
,
0xc9f0000000000000ULL
,
0xcb20000000000000ULL
,
0xcf30
,
0xcde0
,
0xcc50
,
0xca90000000000000ULL
,
0xee00000000000000ULL
,
0xefb0000000000000ULL
,
0xc840
,
0xc9f0
,
0xcb20
,
0xed60000000000000ULL
,
0xecd0000000000000ULL
,
0xe8c0000000000000ULL
,
0xca90
,
0xee00
,
0xefb0
,
0xe970000000000000ULL
,
0xeba0000000000000ULL
,
0xea10000000000000ULL
,
0xed60
,
0xecd0
,
0xe8c0
,
0xe380000000000000ULL
,
0xe230000000000000ULL
,
0xe0e0000000000000ULL
,
0xe970
,
0xeba0
,
0xea10
,
0xe150000000000000ULL
,
0xe540000000000000ULL
,
0xe4f0000000000000ULL
,
0xe380
,
0xe230
,
0xe0e0
,
0xe620000000000000ULL
,
0xe790000000000000ULL
,
0xf500000000000000ULL
,
0xe150
,
0xe540
,
0xe4f0
,
0xf4b0000000000000ULL
,
0xf660000000000000ULL
,
0xf7d0000000000000ULL
,
0xe620
,
0xe790
,
0xf500
,
0xf3c0000000000000ULL
,
0xf270000000000000ULL
,
0xf0a0000000000000ULL
,
0xf4b0
,
0xf660
,
0xf7d0
,
0xf110000000000000ULL
,
0xf880000000000000ULL
,
0xf930000000000000ULL
,
0xf3c0
,
0xf270
,
0xf0a0
,
0xfbe0000000000000ULL
,
0xfa50000000000000ULL
,
0xfe40000000000000ULL
,
0xf110
,
0xf880
,
0xf930
,
0xfff0000000000000ULL
,
0xfd20000000000000ULL
,
0xfc90000000000000ULL
,
0xfbe0
,
0xfa50
,
0xfe40
,
0xb400000000000000ULL
,
0xb5b0000000000000ULL
,
0xb760000000000000ULL
,
0xfff0
,
0xfd20
,
0xfc90
,
0xb6d0000000000000ULL
,
0xb2c0000000000000ULL
,
0xb370000000000000ULL
,
0xb400
,
0xb5b0
,
0xb760
,
0xb1a0000000000000ULL
,
0xb010000000000000ULL
,
0xb980000000000000ULL
,
0xb6d0
,
0xb2c0
,
0xb370
,
0xb830000000000000ULL
,
0xbae0000000000000ULL
,
0xbb50000000000000ULL
,
0xb1a0
,
0xb010
,
0xb980
,
0xbf40000000000000ULL
,
0xbef0000000000000ULL
,
0xbc20000000000000ULL
,
0xb830
,
0xbae0
,
0xbb50
,
0xbd90000000000000ULL
,
0xaf00000000000000ULL
,
0xaeb0000000000000ULL
,
0xbf40
,
0xbef0
,
0xbc20
,
0xac60000000000000ULL
,
0xadd0000000000000ULL
,
0xa9c0000000000000ULL
,
0xbd90
,
0xaf00
,
0xaeb0
,
0xa870000000000000ULL
,
0xaaa0000000000000ULL
,
0xab10000000000000ULL
,
0xac60
,
0xadd0
,
0xa9c0
,
0xa280000000000000ULL
,
0xa330000000000000ULL
,
0xa1e0000000000000ULL
,
0xa870
,
0xaaa0
,
0xab10
,
0xa050000000000000ULL
,
0xa440000000000000ULL
,
0xa5f0000000000000ULL
,
0xa280
,
0xa330
,
0xa1e0
,
0xa720000000000000ULL
,
0xa690000000000000ULL
,
0x8200000000000000ULL
,
0xa050
,
0xa440
,
0xa5f0
,
0x83b0000000000000ULL
,
0x8160000000000000ULL
,
0x80d0000000000000ULL
,
0xa720
,
0xa690
,
0x8200
,
0x84c0000000000000ULL
,
0x8570000000000000ULL
,
0x87a0000000000000ULL
,
0x83b0
,
0x8160
,
0x80d0
,
0x8610000000000000ULL
,
0x8f80000000000000ULL
,
0x8e30000000000000ULL
,
0x84c0
,
0x8570
,
0x87a0
,
0x8ce0000000000000ULL
,
0x8d50000000000000ULL
,
0x8940000000000000ULL
,
0x8610
,
0x8f80
,
0x8e30
,
0x88f0000000000000ULL
,
0x8a20000000000000ULL
,
0x8b90000000000000ULL
,
0x8ce0
,
0x8d50
,
0x8940
,
0x9900000000000000ULL
,
0x98b0000000000000ULL
,
0x9a60000000000000ULL
,
0x88f0
,
0x8a20
,
0x8b90
,
0x9bd0000000000000ULL
,
0x9fc0000000000000ULL
,
0x9e70000000000000ULL
,
0x9900
,
0x98b0
,
0x9a60
,
0x9ca0000000000000ULL
,
0x9d10000000000000ULL
,
0x9480000000000000ULL
,
0x9bd0
,
0x9fc0
,
0x9e70
,
0x9530000000000000ULL
,
0x97e0000000000000ULL
,
0x9650000000000000ULL
,
0x9ca0
,
0x9d10
,
0x9480
,
0x9240000000000000ULL
,
0x93f0000000000000ULL
,
0x9120000000000000ULL
,
0x9530
,
0x97e0
,
0x9650
,
0x9090000000000000ULL
0x9240
,
0x93f0
,
0x9120
,
0x9090
};
};
uint64_t
crc64_iso
(
uint64_t
crc
,
const
void
*
buf
,
size_t
size
)
uint64_t
crc64_iso
(
uint64_t
crc
,
const
void
*
buf
,
size_t
size
)
{
{
const
uint8_t
*
p
=
buf
;
const
uint8_t
*
p
=
buf
;
while
(
size
--
)
while
(
size
--
)
{
crc
=
crc64_tab
[(
crc
^
*
p
++
)
&
0xFFL
]
^
(
crc
>>
8
);
uint64_t
tabval
=
crc64_tab
[(
crc
^
*
p
++
)
&
0xFFL
];
tabval
<<=
48
;
crc
=
tabval
^
(
crc
>>
8
);
}
return
crc
;
return
crc
;
}
}
const
uint64_t
*
crc64_iso_table
(
void
)
const
uint64_t
*
crc64_iso_table
(
void
)
{
{
return
crc64_tab
;
static
uint64_t
*
fulltab
=
NULL
;
unsigned
int
i
;
if
(
fulltab
)
return
fulltab
;
fulltab
=
malloc
(
sizeof
(
uint64_t
)
*
ARRAY_SIZE
(
crc64_tab
));
if
(
!
fulltab
)
return
NULL
;
for
(
i
=
0
;
i
<
ARRAY_SIZE
(
crc64_tab
);
i
++
)
fulltab
[
i
]
=
(
uint64_t
)
crc64_tab
[
i
]
<<
48
;
return
fulltab
;
}
}
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