Commit 5835ba726cff8bff6b8d83d407d72ab723dbcece
2011-10-09T14:44:58
copysign: Provide replacement. * lib/math.in.h (copysign): New declaration. * lib/copysign.c: New file. * m4/copysign.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whether copysign is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_COPYSIGN, HAVE_COPYSIGN. * modules/math (Makefile.am): Substitute GNULIB_COPYSIGN, HAVE_COPYSIGN. * modules/copysign (Description): Clarify. (Files): Add lib/copysign.c, m4/copysign.m4. (Depends-on): Add math, signbit. (configure.ac): Invoke gl_FUNC_COPYSIGN, AC_LIBOBJ, gl_MATH_MODULE_INDICATOR. * tests/test-math-c++.cc: Check the declaration of copysign. * doc/posix-functions/copysign.texi: Mention the effects of the module on Minix and MSVC.