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Diffstat (limited to 'Doc/lib/libfuncs.tex')
| -rw-r--r-- | Doc/lib/libfuncs.tex | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex index 316b294..210fec4 100644 --- a/Doc/lib/libfuncs.tex +++ b/Doc/lib/libfuncs.tex @@ -231,13 +231,17 @@ removed. \begin{funcdesc}{float}{x} Convert a string or a number to floating point. If the argument is a string, it must contain a possibly signed decimal or floating point - number, possibly embedded in whitespace, or be \code{'NaN'} (case - insensitive); this behaves identical to - \code{string.atof(\var{x})}. If the string is \code{'NaN'}, the - IEEE ``Not a Number'' value is returned. Otherwise, the argument - may be a plain or long integer or a floating point number, and a - floating point number with the same value (within Python's floating - point precision) is returned. + number, possibly embedded in whitespace; this behaves identical to + \code{string.atof(\var{x})}. Otherwise, the argument may be a plain + or long integer or a floating point number, and a floating point + number with the same value (within Python's floating point + precision) is returned. + + \strong{Note:} When passing in a string, values for NaN\index{NaN} + and Infinity\index{Infinity} may be returned, depending on the + underlying C library. The specific set of strings accepted which + cause these values to be returned depends entirely on the C library + and is known to vary. \end{funcdesc} \begin{funcdesc}{getattr}{object, name} |