0058967bb0
2006-01-31 Richard Guenther <rguenther@suse.de> Paolo Bonzini <bonzini@gnu.org> * Makefile.def (target_modules): Add libgcc-math target module. * configure.in (target_libraries): Add libgcc-math target library. (--enable-libgcc-math): New configure switch. * Makefile.in: Re-generate. * configure: Re-generate. * libgcc-math: New toplevel directory. * doc/install.texi (--disable-libgcc-math): Document. libgcc-math/ * configure.ac: New file. * Makefile.am: Likewise. * configure: New generated file. * Makefile.in: Likewise. * aclocal.m4: Likewise. * libtool-version: New file. * include/ieee754.h: New file. * include/libc-symbols.h: Likewise. * include/math_private.h: Likewise. * i386/Makefile.am: New file. * i386/Makefile.in: New generated file. * i386/sse2.h: New file. * i386/endian.h: Likewise. * i386/sse2.map: Linker script for SSE2 ABI math intrinsics. * flt-32/: Import from glibc. * dbl-64/: Likewise. Co-Authored-By: Paolo Bonzini <bonzini@gnu.org> From-SVN: r110434
30 lines
532 B
C
30 lines
532 B
C
/*
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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*/
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#if defined(LIBM_SCCS) && !defined(lint)
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static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $";
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#endif
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/*
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* isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0;
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* no branching!
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*/
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#include "math.h"
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#include "math_private.h"
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int
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__isinff (float x)
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{
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int32_t ix,t;
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GET_FLOAT_WORD(ix,x);
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t = ix & 0x7fffffff;
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t ^= 0x7f800000;
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t |= -t;
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return ~(t >> 31) & (ix >> 30);
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}
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hidden_def (__isinff)
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weak_alias (__isinff, isinff)
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