@c Documentation of gnulib module 'c-strtold'.

@c Copyright (C) 2008--2025 Free Software Foundation, Inc.

@c Permission is granted to copy, distribute and/or modify this document
@c under the terms of the GNU Free Documentation License, Version 1.3 or
@c any later version published by the Free Software Foundation; with no
@c Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  A
@c copy of the license is at <https://www.gnu.org/licenses/fdl-1.3.en.html>.

@mindex c-strtold
The @code{c-strtold} module contains a string to number (@samp{long double})
conversion function operating on single-byte character strings, that operates
as if the locale encoding was ASCII.
(The "C" locale on many systems has the locale encoding "ASCII".)

The function is:
@smallexample
extern long double c_strtold (const char *string, char **endp);
@end smallexample

In particular, only a period @samp{.} is accepted as decimal point, even
when the current locale's notion of decimal point is a comma @samp{,}.
