| e_acosf.c (22993) | e_acosf.c (23579) |
|---|---|
| 1/* e_acosf.c -- float version of e_acos.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 */ 4 5/* 6 * ==================================================== 7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 8 * 9 * Developed at SunPro, a Sun Microsystems, Inc. business. 10 * Permission to use, copy, modify, and distribute this 11 * software is freely granted, provided that this notice 12 * is preserved. 13 * ==================================================== 14 */ 15 16#ifndef lint | 1/* e_acosf.c -- float version of e_acos.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 */ 4 5/* 6 * ==================================================== 7 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 8 * 9 * Developed at SunPro, a Sun Microsystems, Inc. business. 10 * Permission to use, copy, modify, and distribute this 11 * software is freely granted, provided that this notice 12 * is preserved. 13 * ==================================================== 14 */ 15 16#ifndef lint |
| 17static char rcsid[] = "$Id$"; | 17static char rcsid[] = "$Id: e_acosf.c,v 1.4 1997/02/22 15:09:55 peter Exp $"; |
| 18#endif 19 20#include "math.h" 21#include "math_private.h" 22 23#ifdef __STDC__ 24static const float 25#else --- 37 unchanged lines hidden (view full) --- 63 p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); 64 q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); 65 r = p/q; 66 return pio2_hi - (x - (pio2_lo-x*r)); 67 } else if (hx<0) { /* x < -0.5 */ 68 z = (one+x)*(float)0.5; 69 p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); 70 q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); | 18#endif 19 20#include "math.h" 21#include "math_private.h" 22 23#ifdef __STDC__ 24static const float 25#else --- 37 unchanged lines hidden (view full) --- 63 p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); 64 q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); 65 r = p/q; 66 return pio2_hi - (x - (pio2_lo-x*r)); 67 } else if (hx<0) { /* x < -0.5 */ 68 z = (one+x)*(float)0.5; 69 p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); 70 q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); |
| 71 s = sqrtf(z); | 71 s = __ieee754_sqrtf(z); |
| 72 r = p/q; 73 w = r*s-pio2_lo; 74 return pi - (float)2.0*(s+w); 75 } else { /* x > 0.5 */ 76 int32_t idf; 77 z = (one-x)*(float)0.5; | 72 r = p/q; 73 w = r*s-pio2_lo; 74 return pi - (float)2.0*(s+w); 75 } else { /* x > 0.5 */ 76 int32_t idf; 77 z = (one-x)*(float)0.5; |
| 78 s = sqrtf(z); | 78 s = __ieee754_sqrtf(z); |
| 79 df = s; 80 GET_FLOAT_WORD(idf,df); 81 SET_FLOAT_WORD(df,idf&0xfffff000); 82 c = (z-df*df)/(s+df); 83 p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); 84 q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); 85 r = p/q; 86 w = r*s+c; 87 return (float)2.0*(df+w); 88 } 89} | 79 df = s; 80 GET_FLOAT_WORD(idf,df); 81 SET_FLOAT_WORD(df,idf&0xfffff000); 82 c = (z-df*df)/(s+df); 83 p = z*(pS0+z*(pS1+z*(pS2+z*(pS3+z*(pS4+z*pS5))))); 84 q = one+z*(qS1+z*(qS2+z*(qS3+z*qS4))); 85 r = p/q; 86 w = r*s+c; 87 return (float)2.0*(df+w); 88 } 89} |