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Add notes to __builtin__.float() and string.atof() that the NaN and Inf

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results are possible but non-portable.
This commit is contained in:
Fred Drake 1999-02-18 16:08:36 +00:00
parent d60ec8f11a
commit 70a66c9d6d
2 changed files with 20 additions and 12 deletions
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18
Doc/lib/libfuncs.tex
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@ -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}