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authorFred Drake <fdrake@acm.org>1998-05-07 01:49:07 (GMT)
committerFred Drake <fdrake@acm.org>1998-05-07 01:49:07 (GMT)
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-\section{Built-in Module \module{math}}
-\label{module-math}
-
-\bimodindex{math}
-This module is always available.
-It provides access to the mathematical functions defined by the \C{}
-standard.
-They are:
-
-\begin{funcdesc}{acos}{x}
-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(\var{x} / \var{y})}.
-\end{funcdesc}
-
-\begin{funcdesc}{ceil}{x}
-Return the ceiling of \var{x} as a real.
-\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 \code{e**\var{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} as a real.
-\end{funcdesc}
-
-\begin{funcdesc}{fmod}{x, y}
-Return \code{\var{x} \%\ \var{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(\var{x}*\var{x} + \var{y}*\var{y})}.
-\end{funcdesc}
-
-\begin{funcdesc}{ldexp}{x, i}
-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}. The integer part is returned as a real.
-\end{funcdesc}
-
-\begin{funcdesc}{pow}{x, y}
-Return \code{\var{x}**\var{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 \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:
-
-\begin{datadesc}{pi}
-The mathematical constant \emph{pi}.
-\end{datadesc}
-
-\begin{datadesc}{e}
-The mathematical constant \emph{e}.
-\end{datadesc}
-
-\begin{seealso}
- \seemodule{cmath}{Complex number versions of many of these functions.}
-\end{seealso}