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author | Fred Drake <fdrake@acm.org> | 1999-06-11 18:31:00 (GMT) |
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committer | Fred Drake <fdrake@acm.org> | 1999-06-11 18:31:00 (GMT) |
commit | 1739d2f9eebb857778187abe2943582ee37b23e1 (patch) | |
tree | f5d2bbc355f4e255146e2f8452640b1459d6292b /Doc/lib/libfpformat.tex | |
parent | 2f9790195b2b47466cdd644556aa36fdf83bd5ab (diff) | |
download | cpython-1739d2f9eebb857778187abe2943582ee37b23e1.zip cpython-1739d2f9eebb857778187abe2943582ee37b23e1.tar.gz cpython-1739d2f9eebb857778187abe2943582ee37b23e1.tar.bz2 |
Documentation for the fpformat module by Moshe Zadka
<mzadka@geocities.com>.
Diffstat (limited to 'Doc/lib/libfpformat.tex')
-rw-r--r-- | Doc/lib/libfpformat.tex | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Doc/lib/libfpformat.tex b/Doc/lib/libfpformat.tex new file mode 100644 index 0000000..94e434c --- /dev/null +++ b/Doc/lib/libfpformat.tex @@ -0,0 +1,51 @@ +\section{\module{fpformat} --- + Floating point conversions} + +\declaremodule{standard}{fpformat} +\sectionauthor{Moshe Zadka}{mzadka@geocities.com} +\modulesynopsis{General floating point formatting functions.} + + +The \module{fpformat} module defines functions for dealing with +floating point numbers representations in 100\% pure +Python. \strong{Note:} This module is unneeded: everything here could +be done via the \code{\%} string interpolation operator. + +The \module{fpformat} module defines the following functions and an +exception: + + +\begin{funcdesc}{fix}{x, digs} +Format \var{x} as \code{[-]ddd.ddd} with \var{digs} digits after the +point and at least one digit before. +If \code{\var{digs} <= 0}, the decimal point is suppressed. + +\var{x} can be either a number or a string that looks like +one. \var{digs} is an integer. + +Return value is a string. +\end{funcdesc} + +\begin{funcdesc}{sci}{x, digs} +Format \var{x} as \code{[-]d.dddE[+-]ddd} with \var{digs} digits after the +point and exactly one digit before. +If \code{\var{digs} <= 0}, one digit is kept and the point is suppressed. + +\var{x} can be either a real number, or a string that looks like +one. \var{digs} is an integer. + +Return value is a string. +\end{funcdesc} + +\begin{excdesc}{NotANumber} +Exception raised when a string does not look like a number when the +documentation says it should. +\end{excdesc} + +Example: + +\begin{verbatim} +>>> import fpformat +>>> fpformat.fix(1.23, 1) +'1.2' +\end{verbatim} |