5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/strtod.html}
7 Gnulib module: strtod or strtod-obsolete
9 Portability problems fixed by either Gnulib module @code{strtod} or @code{strtod-obsolete}:
12 This function mis-parses strings with leading @samp{+} on some old platforms:
13 Old versions of Linux.
16 This function returns a wrong end pointer on some old platforms.
19 This function consumes whitespace even when there is nothing that should
20 be parsed on some platforms:
24 This function allows whitespace between @samp{e} and the exponent on
26 HP-UX 11.11, IRIX 6.5.
29 This function returns the wrong end pointer for @samp{-0x} on some
31 glibc 2.4, Mac OS X 10.5, FreeBSD 6.2, AIX 7.1, Cygwin < 1.5.25-11.
34 This function returns +0.0 (not @minus{}0.0) for @samp{-0} on some platforms:
38 This function fails to parse Infinities and plain NaNs on some platforms:
39 OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, Solaris 9, mingw, MSVC 14.
42 This function fails to parse @samp{NaN()} on some platforms:
43 glibc-2.3.6, Mac OS X 10.5, FreeBSD 6.2, OpenBSD 4.0, AIX 7.1, HP-UX 11.11, IRIX 6.5, Cygwin < 1.5.25-11, mingw, MSVC 14.
46 This function fails to parse @samp{NaN(@var{n-char-sequence})} on some
48 OpenBSD 4.0, HP-UX 11.11, IRIX 6.5, mingw, MSVC 14.
51 This function parses @samp{NaN(@var{n-char-sequence})}, but returns
52 the wrong end pointer on some platforms:
56 This function fails to parse C99 hexadecimal floating point on some
58 NetBSD 5.0, OpenBSD 4.0, AIX 5.1, HP-UX 11.11, IRIX 6.5, Solaris 11.4, mingw, MSVC 14.
61 In hexadecimal floats, this function allows whitespace between @samp{p}
62 and the exponent on some platforms:
66 This function returns the wrong end pointer for @samp{0x1p} on some
71 Portability problems fixed by Gnulib module @code{strtod-obsolete}:
74 This function is missing on some old platforms.
77 Portability problems not fixed by Gnulib:
80 This function returns +0.0 (not @minus{}0.0) for negative underflow on some
82 glibc 2.7, Cygwin 1.5.x, mingw, MSVC 14.
85 This function cannot distinguish between ``nan'' and ``-nan'' on some
87 glibc 2.7, IRIX 6.5, mingw, MSVC 14.
90 This function fails to correctly parse very long strings on some
92 Mac OS X 10.5, FreeBSD 6.2, NetBSD 5.0, OpenBSD 4.0, IRIX 6.5, Cygwin, mingw, MSVC 14.
95 The replacement function does not always return correctly rounded results.