@node atof
@section @code{atof}
@findex atof

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/atof.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Android 4.4.

@item
This function mis-parses strings with leading @samp{+} on some old platforms:
Old versions of Linux.

@item
This function returns a positive value for negative underflow on some
platforms:
glibc 2.4, Mingw, Cygwin.

@item
This function fails to do a valid parse of @samp{-0x} on some
platforms:
glibc 2.4, Cygwin < 1.5.25-11.

@item
This function fails to parse Infinities and plain NaNs on some platforms:
Mingw, OpenBSD 4.0.

@item
This function fails to parse NaN() on some platforms:
Mingw, OpenBSD 4.0, Cygwin < 1.5.25-11.

@item
This function fails to parse NaN(n-char-sequence) on some platforms:
Mingw, OpenBSD 4.0.

@item
This function fails to parse C99 hexadecimal floating point on some
platforms:
Mingw, OpenBSD 4.0.

@item
This function fails to correctly parse very long strings on some
platforms:
Mingw, Cygwin.
@end itemize