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Kirill Smelkov
cpython
Commits
b55e07f4
Commit
b55e07f4
authored
Sep 30, 1997
by
Fred Drake
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Plain Diff
Fixed up formatting.
parent
1b914b33
Changes
2
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2 changed files
with
184 additions
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114 deletions
+184
-114
Doc/lib/libmath.tex
Doc/lib/libmath.tex
+92
-57
Doc/libmath.tex
Doc/libmath.tex
+92
-57
No files found.
Doc/lib/libmath.tex
View file @
b55e07f4
...
...
@@ -7,56 +7,92 @@ This module is always available.
It provides access to the mathematical functions defined by the C
standard.
They are:
\iftexi
\begin{funcdesc}
{
acos
}{
x
}
\funcline
{
asin
}{
x
}
\funcline
{
atan
}{
x
}
\funcline
{
atan2
}{
x, y
}
\funcline
{
ceil
}{
x
}
\funcline
{
cos
}{
x
}
\funcline
{
cosh
}{
x
}
\funcline
{
exp
}{
x
}
\funcline
{
fabs
}{
x
}
\funcline
{
floor
}{
x
}
\funcline
{
fmod
}{
x, y
}
\funcline
{
frexp
}{
x
}
\funcline
{
hypot
}{
x, y
}
\funcline
{
ldexp
}{
x, y
}
\funcline
{
log
}{
x
}
\funcline
{
log10
}{
x
}
\funcline
{
modf
}{
x
}
\funcline
{
pow
}{
x, y
}
\funcline
{
sin
}{
x
}
\funcline
{
sinh
}{
x
}
\funcline
{
sqrt
}{
x
}
\funcline
{
tan
}{
x
}
\funcline
{
tanh
}{
x
}
\end{funcdesc}
\else
\code
{
acos(
\varvars
{
x
}
)
}
,
\code
{
asin(
\varvars
{
x
}
)
}
,
\code
{
atan(
\varvars
{
x
}
)
}
,
\code
{
atan2(
\varvars
{
x
\,
y
}
)
}
,
\code
{
ceil(
\varvars
{
x
}
)
}
,
\code
{
cos(
\varvars
{
x
}
)
}
,
\code
{
cosh(
\varvars
{
x
}
)
}
,
\code
{
exp(
\varvars
{
x
}
)
}
,
\code
{
fabs(
\varvars
{
x
}
)
}
,
\code
{
floor(
\varvars
{
x
}
)
}
,
\code
{
fmod(
\varvars
{
x
\,
y
}
)
}
,
\code
{
frexp(
\varvars
{
x
}
)
}
,
\code
{
hypot(
\varvars
{
x
\,
y
}
)
}
,
\code
{
ldexp(
\varvars
{
x
\,
y
}
)
}
,
\code
{
log(
\varvars
{
x
}
)
}
,
\code
{
log10(
\varvars
{
x
}
)
}
,
\code
{
modf(
\varvars
{
x
}
)
}
,
\code
{
pow(
\varvars
{
x
\,
y
}
)
}
,
\code
{
sin(
\varvars
{
x
}
)
}
,
\code
{
sinh(
\varvars
{
x
}
)
}
,
\code
{
sqrt(
\varvars
{
x
}
)
}
,
\code
{
tan(
\varvars
{
x
}
)
}
,
\code
{
tanh(
\varvars
{
x
}
)
}
.
\fi
Return the arc cosine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
asin
}{
x
}
Return the arc sine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
atan
}{
x
}
Return the arc tangent of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
atan2
}{
x, y
}
Return
\code
{
atan(x / y)
}
.
\end{funcdesc}
\begin{funcdesc}
{
ceil
}{
x
}
Return the ceiling of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
cos
}{
x
}
Return the cosine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
cosh
}{
x
}
Return the hyperbolic cosine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
exp
}{
x
}
Return the exponential value
$
\mbox
{
e
}^
x
$
.
\end{funcdesc}
\begin{funcdesc}
{
fabs
}{
x
}
Return the absolute value of the real
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
floor
}{
x
}
Return the floor of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
fmod
}{
x, y
}
Return
\code
{
x
\%
y
}
.
\end{funcdesc}
\begin{funcdesc}
{
frexp
}{
x
}
Return the matissa and exponent for
\var
{
x
}
. The mantissa is
positive.
\end{funcdesc}
\begin{funcdesc}
{
hypot
}{
x, y
}
Return the Euclidean distance,
\code
{
sqrt(x*x + y*y)
}
.
\end{funcdesc}
\begin{funcdesc}
{
ldexp
}{
x, i
}
Return
$
x
{
\times
}
2
^
i
$
.
\end{funcdesc}
\begin{funcdesc}
{
modf
}{
x
}
Return the fractional and integer parts of
\var
{
x
}
. Both results
carry the sign of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
pow
}{
x, y
}
Return
$
x
^
y
$
.
\end{funcdesc}
\begin{funcdesc}
{
sin
}{
x
}
Return the sine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
sinh
}{
x
}
Return the hyperbolic sine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
sqrt
}{
x
}
Return the square root of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
tan
}{
x
}
Return the tangent of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
tanh
}{
x
}
Return the hyperbolic tangent of
\var
{
x
}
.
\end{funcdesc}
Note that
\code
{
frexp
}
and
\code
{
modf
}
have a different call/return
pattern than their C equivalents: they take a single argument and
...
...
@@ -64,14 +100,13 @@ return a pair of values, rather than returning their second return
value through an `output parameter' (there is no such thing in Python).
The module also defines two mathematical constants:
\iftexi
\begin{datadesc}
{
pi
}
\dataline
{
e
}
The mathematical constant
\emph
{
pi
}
.
\end{datadesc}
\begin{datadesc}
{
e
}
The mathematical constant
\emph
{
e
}
.
\end{datadesc}
\else
\code
{
pi
}
and
\code
{
e
}
.
\fi
\begin{seealso}
\seealso
{
cmath
}{
versions of these functions that can handle complex numbers
}
\end{seealso}
See also the
\code
{
cmath
}
versions of many of these functions.
Doc/libmath.tex
View file @
b55e07f4
...
...
@@ -7,56 +7,92 @@ This module is always available.
It provides access to the mathematical functions defined by the C
standard.
They are:
\iftexi
\begin{funcdesc}
{
acos
}{
x
}
\funcline
{
asin
}{
x
}
\funcline
{
atan
}{
x
}
\funcline
{
atan2
}{
x, y
}
\funcline
{
ceil
}{
x
}
\funcline
{
cos
}{
x
}
\funcline
{
cosh
}{
x
}
\funcline
{
exp
}{
x
}
\funcline
{
fabs
}{
x
}
\funcline
{
floor
}{
x
}
\funcline
{
fmod
}{
x, y
}
\funcline
{
frexp
}{
x
}
\funcline
{
hypot
}{
x, y
}
\funcline
{
ldexp
}{
x, y
}
\funcline
{
log
}{
x
}
\funcline
{
log10
}{
x
}
\funcline
{
modf
}{
x
}
\funcline
{
pow
}{
x, y
}
\funcline
{
sin
}{
x
}
\funcline
{
sinh
}{
x
}
\funcline
{
sqrt
}{
x
}
\funcline
{
tan
}{
x
}
\funcline
{
tanh
}{
x
}
\end{funcdesc}
\else
\code
{
acos(
\varvars
{
x
}
)
}
,
\code
{
asin(
\varvars
{
x
}
)
}
,
\code
{
atan(
\varvars
{
x
}
)
}
,
\code
{
atan2(
\varvars
{
x
\,
y
}
)
}
,
\code
{
ceil(
\varvars
{
x
}
)
}
,
\code
{
cos(
\varvars
{
x
}
)
}
,
\code
{
cosh(
\varvars
{
x
}
)
}
,
\code
{
exp(
\varvars
{
x
}
)
}
,
\code
{
fabs(
\varvars
{
x
}
)
}
,
\code
{
floor(
\varvars
{
x
}
)
}
,
\code
{
fmod(
\varvars
{
x
\,
y
}
)
}
,
\code
{
frexp(
\varvars
{
x
}
)
}
,
\code
{
hypot(
\varvars
{
x
\,
y
}
)
}
,
\code
{
ldexp(
\varvars
{
x
\,
y
}
)
}
,
\code
{
log(
\varvars
{
x
}
)
}
,
\code
{
log10(
\varvars
{
x
}
)
}
,
\code
{
modf(
\varvars
{
x
}
)
}
,
\code
{
pow(
\varvars
{
x
\,
y
}
)
}
,
\code
{
sin(
\varvars
{
x
}
)
}
,
\code
{
sinh(
\varvars
{
x
}
)
}
,
\code
{
sqrt(
\varvars
{
x
}
)
}
,
\code
{
tan(
\varvars
{
x
}
)
}
,
\code
{
tanh(
\varvars
{
x
}
)
}
.
\fi
Return the arc cosine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
asin
}{
x
}
Return the arc sine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
atan
}{
x
}
Return the arc tangent of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
atan2
}{
x, y
}
Return
\code
{
atan(x / y)
}
.
\end{funcdesc}
\begin{funcdesc}
{
ceil
}{
x
}
Return the ceiling of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
cos
}{
x
}
Return the cosine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
cosh
}{
x
}
Return the hyperbolic cosine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
exp
}{
x
}
Return the exponential value
$
\mbox
{
e
}^
x
$
.
\end{funcdesc}
\begin{funcdesc}
{
fabs
}{
x
}
Return the absolute value of the real
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
floor
}{
x
}
Return the floor of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
fmod
}{
x, y
}
Return
\code
{
x
\%
y
}
.
\end{funcdesc}
\begin{funcdesc}
{
frexp
}{
x
}
Return the matissa and exponent for
\var
{
x
}
. The mantissa is
positive.
\end{funcdesc}
\begin{funcdesc}
{
hypot
}{
x, y
}
Return the Euclidean distance,
\code
{
sqrt(x*x + y*y)
}
.
\end{funcdesc}
\begin{funcdesc}
{
ldexp
}{
x, i
}
Return
$
x
{
\times
}
2
^
i
$
.
\end{funcdesc}
\begin{funcdesc}
{
modf
}{
x
}
Return the fractional and integer parts of
\var
{
x
}
. Both results
carry the sign of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
pow
}{
x, y
}
Return
$
x
^
y
$
.
\end{funcdesc}
\begin{funcdesc}
{
sin
}{
x
}
Return the sine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
sinh
}{
x
}
Return the hyperbolic sine of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
sqrt
}{
x
}
Return the square root of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
tan
}{
x
}
Return the tangent of
\var
{
x
}
.
\end{funcdesc}
\begin{funcdesc}
{
tanh
}{
x
}
Return the hyperbolic tangent of
\var
{
x
}
.
\end{funcdesc}
Note that
\code
{
frexp
}
and
\code
{
modf
}
have a different call/return
pattern than their C equivalents: they take a single argument and
...
...
@@ -64,14 +100,13 @@ return a pair of values, rather than returning their second return
value through an `output parameter' (there is no such thing in Python).
The module also defines two mathematical constants:
\iftexi
\begin{datadesc}
{
pi
}
\dataline
{
e
}
The mathematical constant
\emph
{
pi
}
.
\end{datadesc}
\begin{datadesc}
{
e
}
The mathematical constant
\emph
{
e
}
.
\end{datadesc}
\else
\code
{
pi
}
and
\code
{
e
}
.
\fi
\begin{seealso}
\seealso
{
cmath
}{
versions of these functions that can handle complex numbers
}
\end{seealso}
See also the
\code
{
cmath
}
versions of many of these functions.
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