Hash :
b5cc9885
Author :
Date :
2012-02-27T01:44:57
modf-ieee: Work around test failures on *BSD, IRIX, OSF/1, Cygwin. * m4/modf-ieee.m4: New file. * m4/modf.m4 (gl_FUNC_MODF): If gl_FUNC_MODF_IEEE is present, test whether modf works with NaN and Inf. Replace it if not. * lib/math.in.h (modf): New declaration. * lib/modf.c: New file. * m4/math_h.m4 (gl_MATH_H): Test whether modf is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_MODF, REPLACE_MODF. * modules/math (Makefile.am): Substitute GNULIB_MODF, REPLACE_MODF. * modules/modf (Files): Add lib/modf.c. (Depends-on): Add math, isfinite, trunc, isinf. (configure.ac): Addrange to compile lib/modf.c if needed. * modules/modf-ieee (Files): Add m4/modf-ieee.m4, m4/minus-zero.m4, m4/signbit.m4. (configure.ac): Invoke gl_FUNC_MODF_IEEE. * tests/test-math-c++.cc: Check the declaration of modf. * doc/posix-functions/modf.texi: Mention the modf-ieee module.
Description:
modf() function: get signed integer and fractional parts.
Files:
lib/modf.c
m4/modf.m4
m4/mathfunc.m4
Depends-on:
math
isfinite [test $REPLACE_MODF = 1]
trunc [test $REPLACE_MODF = 1]
isinf [test $REPLACE_MODF = 1]
configure.ac:
gl_FUNC_MODF
if test $REPLACE_MODF = 1; then
AC_LIBOBJ([modf])
fi
gl_MATH_MODULE_INDICATOR([modf])
Makefile.am:
Include:
<math.h>
Link:
$(MODF_LIBM)
License:
LGPL
Maintainer:
Bruno Haible