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

Description:
Discard pending data on both input and output streams.

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

Depends-on:
stdio
fpurge          [test $REPLACE_FFLUSH = 1]
ftello          [test $REPLACE_FFLUSH = 1]
freading        [test $REPLACE_FFLUSH = 1]
lseek           [test $REPLACE_FFLUSH = 1]
unistd          [test $REPLACE_FFLUSH = 1]
fseeko          [test $REPLACE_FFLUSH = 1]

configure.ac-early:
AC_REQUIRE([AC_FUNC_FSEEKO])

configure.ac:
gl_FUNC_FFLUSH
if test $REPLACE_FFLUSH = 1; then
  AC_LIBOBJ([fflush])
  gl_PREREQ_FFLUSH
fi
gl_MODULE_INDICATOR([fflush])
gl_STDIO_MODULE_INDICATOR([fflush])

Makefile.am:

Include:
<stdio.h>

License:
LGPLv2+

Maintainer:
Eric Blake