6ff68ac318
2006-02-28 Richard Guenther <rguenther@suse.de> PR bootstrap/26055 Revert * configure.ac: Disable libgcc-math if we cannot mix declaration of __isinf and math.h inclusion. * configure: Re-generate. * i386/Makefile.am: Use -std=c99, do not use -ffinite-math-only, do not define __NO_MATH_INLINES. * i386/Makefile.in: Re-generate. * include/math_private.h (__atanf): Declare. (__scalbnf): Likewise. (__floorf): Likewise. (__isinff): Likewise. (__scalbn): Likewise. (__floor): Likewise. (fabs): Likewise. (fabsf): Likewise. * flt-32/e_acosf.c: Do not include math.h * flt-32/s_isinff.c: Likewise. * flt-32/k_tanf.c: Likewise. * flt-32/e_sqrtf.c: Likewise. * flt-32/e_asinf.c: Likewise. * flt-32/k_cosf.c: Likewise. * flt-32/k_sinf.c: Likewise. * flt-32/s_floorf.c: Likewise. * flt-32/s_tanf.c: Likewise. * flt-32/s_atanf.c: Likewise. * flt-32/s_cosf.c: Likewise. * flt-32/e_atan2f.c: Likewise. * flt-32/e_powf.c: Likewise. * flt-32/s_sinf.c: Likewise. * flt-32/e_rem_pio2f.c: Likewise. * flt-32/s_scalbnf.c: Likewise. * flt-32/e_logf.c: Likewise. * flt-32/e_log10f.c: Likewise. * flt-32/k_rem_pio2f.c: Likewise. * flt-32/e_expf.c: Likewise. Use __builtin_isless and __builtin_isgreater. * dbl-64/s_floor.c: Do not include math.h. * dbl-64/e_log10.c: Likewise. * dbl-64/k_rem_pio2.c: Likewise. * dbl-64/s_atan.c: Likewise. * dbl-64/s_scalbn.c: Likewise. * dbl-64/s_isinf.c: Likewise. * dbl-64/s_tan.c: Likewise. * dbl-64/e_rem_pio2.c: Likewise. Avoid uninitialized variable warning. * dbl-64/mpa.c: Likewise. From-SVN: r111563
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/* s_floorf.c -- float version of s_floor.c.
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* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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*/
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#if defined(LIBM_SCCS) && !defined(lint)
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static char rcsid[] = "$NetBSD: s_floorf.c,v 1.4 1995/05/10 20:47:22 jtc Exp $";
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#endif
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/*
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* floorf(x)
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* Return x rounded toward -inf to integral value
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* Method:
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* Bit twiddling.
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* Exception:
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* Inexact flag raised if x not equal to floorf(x).
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*/
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#include "math_private.h"
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#ifdef __STDC__
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static const float huge = 1.0e30;
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#else
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static float huge = 1.0e30;
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#endif
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#ifdef __STDC__
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float __floorf(float x)
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#else
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float __floorf(x)
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float x;
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#endif
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{
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int32_t i0,j0;
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uint32_t i;
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GET_FLOAT_WORD(i0,x);
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j0 = ((i0>>23)&0xff)-0x7f;
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if(j0<23) {
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if(j0<0) { /* raise inexact if x != 0 */
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if(huge+x>(float)0.0) {/* return 0*sign(x) if |x|<1 */
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if(i0>=0) {i0=0;}
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else if((i0&0x7fffffff)!=0)
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{ i0=0xbf800000;}
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}
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} else {
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i = (0x007fffff)>>j0;
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if((i0&i)==0) return x; /* x is integral */
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if(huge+x>(float)0.0) { /* raise inexact flag */
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if(i0<0) i0 += (0x00800000)>>j0;
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i0 &= (~i);
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}
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}
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} else {
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if(j0==0x80) return x+x; /* inf or NaN */
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else return x; /* x is integral */
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}
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SET_FLOAT_WORD(x,i0);
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return x;
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}
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weak_alias (__floorf, floorf)
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