diff options
Diffstat (limited to 'Doc/lib/libmath.tex')
| -rw-r--r-- | Doc/lib/libmath.tex | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/Doc/lib/libmath.tex b/Doc/lib/libmath.tex index 2f80275..c40030b 100644 --- a/Doc/lib/libmath.tex +++ b/Doc/lib/libmath.tex @@ -4,7 +4,7 @@ \bimodindex{math} \renewcommand{\indexsubitem}{(in module math)} This module is always available. -It provides access to the mathematical functions defined by the C +It provides access to the mathematical functions defined by the \C{} standard. They are: @@ -25,7 +25,7 @@ Return \code{atan(\var{x} / \var{y})}. \end{funcdesc} \begin{funcdesc}{ceil}{x} -Return the ceiling of \var{x}. +Return the ceiling of \var{x} as a real. \end{funcdesc} \begin{funcdesc}{cos}{x} @@ -45,7 +45,7 @@ Return the absolute value of the real \var{x}. \end{funcdesc} \begin{funcdesc}{floor}{x} -Return the floor of \var{x}. +Return the floor of \var{x} as a real. \end{funcdesc} \begin{funcdesc}{fmod}{x, y} @@ -65,9 +65,17 @@ Return the Euclidean distance, \code{sqrt(\var{x}*\var{x} + \var{y}*\var{y})}. Return \code{\var{x} * (2**\var{i})}. \end{funcdesc} +\begin{funcdesc}{log}{x} +Return the natural logarithm of \var{x}. +\end{funcdesc} + +\begin{funcdesc}{log10}{x} +Return the base-10 logarithm of \var{x}. +\end{funcdesc} + \begin{funcdesc}{modf}{x} Return the fractional and integer parts of \var{x}. Both results -carry the sign of \var{x}. +carry the sign of \var{x}. The integer part is returned as a real. \end{funcdesc} \begin{funcdesc}{pow}{x, y} @@ -94,10 +102,11 @@ Return the tangent of \var{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 -return a pair of values, rather than returning their second return -value through an `output parameter' (there is no such thing in Python). +Note that \function{frexp()} and \function{modf()} have a different +call/return pattern than their \C{} equivalents: they take a single +argument and 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: |