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The following patch provides some further math library fallbacks. fmaf can be implemented using fma if available, fma and fmal can use x * y + z as fallback, it is not perfect, but e.g. glibc on various arches has been using that as fallback for many years, and copysign/copysignl/fabs/fabsl can be implemented using corresponding __builtin_* if we make sure that gcc expands it inline instead of using a library call (these days it is expanded inline on most targets). 2020-04-22 Jakub Jelinek <jakub@redhat.com> PR libfortran/94694 PR libfortran/94586 * configure.ac: Add math func checks for fmaf, fma and fmal. Add HAVE_INLINE_BUILTIN_COPYSIGN check. * c99_protos.h (copysign, fmaf, fma, fmal): Provide fallback prototypes. (HAVE_COPYSIGN, HAVE_FMAF, HAVE_FMA, HAVE_FMAL): Define if not defined and fallback version is provided. * intrinsics/c99_functions.c (copysign, fmaf, fma, fmal): Provide fallback implementations if possible * configure: Regenerated. * config.h.in: Regenerated. * math.m4 (GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK1, GCC_CHECK_MATH_INLINE_BUILTIN_FALLBACK2): New. |
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| config | ||
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| libgcc | ||
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| libgo | ||
| libgomp | ||
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| config.rpath | ||
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| configure | ||
| configure.ac | ||
| COPYING | ||
| COPYING3 | ||
| COPYING3.LIB | ||
| COPYING.LIB | ||
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| depcomp | ||
| install-sh | ||
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| libtool.m4 | ||
| lt~obsolete.m4 | ||
| ltgcc.m4 | ||
| ltmain.sh | ||
| ltoptions.m4 | ||
| ltsugar.m4 | ||
| ltversion.m4 | ||
| MAINTAINERS | ||
| Makefile.def | ||
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