| s_cosf.c (152871) | s_cosf.c (152872) |
|---|---|
| 1/* s_cosf.c -- float version of s_cos.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 * Optimized by Bruce D. Evans. 4 */ 5 6/* 7 * ==================================================== 8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 9 * 10 * Developed at SunPro, a Sun Microsystems, Inc. business. 11 * Permission to use, copy, modify, and distribute this 12 * software is freely granted, provided that this notice 13 * is preserved. 14 * ==================================================== 15 */ 16 17#ifndef lint | 1/* s_cosf.c -- float version of s_cos.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 * Optimized by Bruce D. Evans. 4 */ 5 6/* 7 * ==================================================== 8 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 9 * 10 * Developed at SunPro, a Sun Microsystems, Inc. business. 11 * Permission to use, copy, modify, and distribute this 12 * software is freely granted, provided that this notice 13 * is preserved. 14 * ==================================================== 15 */ 16 17#ifndef lint |
| 18static char rcsid[] = "$FreeBSD: head/lib/msun/src/s_cosf.c 152871 2005-11-28 05:46:13Z bde $"; | 18static char rcsid[] = "$FreeBSD: head/lib/msun/src/s_cosf.c 152872 2005-11-28 06:15:10Z bde $"; |
| 19#endif 20 21#include "math.h" 22#define INLINE_KERNEL_COSDF 23#define INLINE_KERNEL_SINDF 24#include "math_private.h" 25#include "k_cosf.c" 26#include "k_sinf.c" --- 16 unchanged lines hidden (view full) --- 43 44 if(ix <= 0x3f490fda) { /* |x| ~<= pi/4 */ 45 if(ix<0x39800000) /* |x| < 2**-12 */ 46 if(((int)x)==0) return 1.0; /* 1 with inexact if x != 0 */ 47 return __kernel_cosdf(x); 48 } 49 if(ix<=0x407b53d1) { /* |x| ~<= 5*pi/4 */ 50 if(ix<=0x4016cbe3) /* |x| ~<= 3pi/4 */ | 19#endif 20 21#include "math.h" 22#define INLINE_KERNEL_COSDF 23#define INLINE_KERNEL_SINDF 24#include "math_private.h" 25#include "k_cosf.c" 26#include "k_sinf.c" --- 16 unchanged lines hidden (view full) --- 43 44 if(ix <= 0x3f490fda) { /* |x| ~<= pi/4 */ 45 if(ix<0x39800000) /* |x| < 2**-12 */ 46 if(((int)x)==0) return 1.0; /* 1 with inexact if x != 0 */ 47 return __kernel_cosdf(x); 48 } 49 if(ix<=0x407b53d1) { /* |x| ~<= 5*pi/4 */ 50 if(ix<=0x4016cbe3) /* |x| ~<= 3pi/4 */ |
| 51 return -__kernel_sindf(x - c1pio2); | 51 return __kernel_sindf(c1pio2 - x); |
| 52 else 53 return -__kernel_cosdf(x - c2pio2); 54 } 55 if(ix<=0x40e231d5) { /* |x| ~<= 9*pi/4 */ 56 if(ix<=0x40afeddf) /* |x| ~<= 7*pi/4 */ 57 return __kernel_sindf(x - c3pio2); 58 else 59 return __kernel_cosdf(x - c4pio2); 60 } 61 62 /* cos(Inf or NaN) is NaN */ 63 else if (ix>=0x7f800000) return x-x; 64 65 /* general argument reduction needed */ 66 else { 67 n = __ieee754_rem_pio2f(x,y); 68 switch(n&3) { 69 case 0: return __kernel_cosdf((double)y[0]+y[1]); | 52 else 53 return -__kernel_cosdf(x - c2pio2); 54 } 55 if(ix<=0x40e231d5) { /* |x| ~<= 9*pi/4 */ 56 if(ix<=0x40afeddf) /* |x| ~<= 7*pi/4 */ 57 return __kernel_sindf(x - c3pio2); 58 else 59 return __kernel_cosdf(x - c4pio2); 60 } 61 62 /* cos(Inf or NaN) is NaN */ 63 else if (ix>=0x7f800000) return x-x; 64 65 /* general argument reduction needed */ 66 else { 67 n = __ieee754_rem_pio2f(x,y); 68 switch(n&3) { 69 case 0: return __kernel_cosdf((double)y[0]+y[1]); |
| 70 case 1: return -__kernel_sindf((double)y[0]+y[1]); | 70 case 1: return __kernel_sindf(-(double)y[0]-y[1]); |
| 71 case 2: return -__kernel_cosdf((double)y[0]+y[1]); 72 default: 73 return __kernel_sindf((double)y[0]+y[1]); 74 } 75 } 76} | 71 case 2: return -__kernel_cosdf((double)y[0]+y[1]); 72 default: 73 return __kernel_sindf((double)y[0]+y[1]); 74 } 75 } 76} |