remainderf-ieee: Work around test failure on OSF/1. * m4/remainderf-ieee.m4: New file. * m4/remainderf.m4 (gl_FUNC_REMAINDERF): If gl_FUNC_REMAINDERF_IEEE is present, test whether remainderf works with a zero second argument. Replace it if not. * lib/math.in.h (remainderf): Override if REPLACE_REMAINDERF is 1. * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize REPLACE_REMAINDERF. * modules/math (Makefile.am): Substitute REPLACE_REMAINDERF. * modules/remainderf (configure.ac): Consider REPLACE_REMAINDERF. (Depends-on): Update conditions. * modules/remainderf-ieee (Files): Add m4/remainderf-ieee.m4. (Depends-on): Add remainder-ieee. (configure.ac): Invoke gl_FUNC_REMAINDERF_IEEE. * doc/posix-functions/remainderf.texi: Mention the remainderf-ieee module.

Description:
freadable() function: Determine whether a FILE stream supports reading.

Files:
lib/freadable.h
lib/freadable.c
lib/stdio-impl.h
m4/freadable.m4

Depends-on:
stdbool

configure.ac:
gl_FUNC_FREADABLE
if test $ac_cv_func___freadable = no; then
  AC_LIBOBJ([freadable])
fi

Makefile.am:

Include:
"freadable.h"

License:
LGPL

Maintainer:
Bruno Haible, Eric Blake