@node expm1
@subsection @code{expm1}
@findex expm1

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/expm1.html}

Gnulib module: expm1 or expm1-ieee
@mindex expm1
@mindex expm1-ieee

Portability problems fixed by either Gnulib module @code{expm1} or @code{expm1-ieee}:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, mingw, MSVC 9.
@end itemize

Portability problems fixed by Gnulib module @code{expm1-ieee}:
@itemize
@item
This function has problems when the argument is minus zero on some platforms:
AIX 7.1.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize
