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
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* k_cosf.c -- float version of k_cos.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: k_cosf.c,v 1.4 1995/05/10 20:46:23 jtc Exp $";
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#endif
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#include "math_private.h"
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#ifdef __STDC__
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static const float
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#else
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static float
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#endif
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one = 1.0000000000e+00, /* 0x3f800000 */
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C1 = 4.1666667908e-02, /* 0x3d2aaaab */
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C2 = -1.3888889225e-03, /* 0xbab60b61 */
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C3 = 2.4801587642e-05, /* 0x37d00d01 */
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C4 = -2.7557314297e-07, /* 0xb493f27c */
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C5 = 2.0875723372e-09, /* 0x310f74f6 */
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C6 = -1.1359647598e-11; /* 0xad47d74e */
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#ifdef __STDC__
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float __kernel_cosf(float x, float y)
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#else
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float __kernel_cosf(x, y)
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float x,y;
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#endif
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{
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float a,hz,z,r,qx;
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int32_t ix;
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GET_FLOAT_WORD(ix,x);
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ix &= 0x7fffffff; /* ix = |x|'s high word*/
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if(ix<0x32000000) { /* if x < 2**27 */
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if(((int)x)==0) return one; /* generate inexact */
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}
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z = x*x;
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r = z*(C1+z*(C2+z*(C3+z*(C4+z*(C5+z*C6)))));
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if(ix < 0x3e99999a) /* if |x| < 0.3 */
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return one - ((float)0.5*z - (z*r - x*y));
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else {
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if(ix > 0x3f480000) { /* x > 0.78125 */
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qx = (float)0.28125;
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} else {
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SET_FLOAT_WORD(qx,ix-0x01000000); /* x/4 */
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}
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hz = (float)0.5*z-qx;
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a = one-qx;
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return a - (hz - (z*r-x*y));
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}
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}
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