| k_tanf.c (151961) | k_tanf.c (151963) |
|---|---|
| 1/* k_tanf.c -- float version of k_tan.c 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 */ 4 5/* 6 * ==================================================== 7 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. 8 * 9 * Permission to use, copy, modify, and distribute this 10 * software is freely granted, provided that this notice 11 * is preserved. 12 * ==================================================== 13 */ 14 15#ifndef lint | 1/* k_tanf.c -- float version of k_tan.c 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. 3 */ 4 5/* 6 * ==================================================== 7 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. 8 * 9 * Permission to use, copy, modify, and distribute this 10 * software is freely granted, provided that this notice 11 * is preserved. 12 * ==================================================== 13 */ 14 15#ifndef lint |
| 16static char rcsid[] = "$FreeBSD: head/lib/msun/src/k_tanf.c 151961 2005-11-02 05:37:31Z bde $"; | 16static char rcsid[] = "$FreeBSD: head/lib/msun/src/k_tanf.c 151963 2005-11-02 06:45:21Z bde $"; |
| 17#endif 18 19#include "math.h" 20#include "math_private.h" 21static const float 22one = 1.0000000000e+00, /* 0x3f800000 */ 23pio4 = 7.8539812565e-01, /* 0x3f490fda */ 24pio4lo= 3.7748947079e-08, /* 0x33222168 */ --- 17 unchanged lines hidden (view full) --- 42__kernel_tanf(float x, float y, int iy) 43{ 44 float z,r,v,w,s; 45 int32_t ix,hx; 46 GET_FLOAT_WORD(hx,x); 47 ix = hx&0x7fffffff; /* high word of |x| */ 48 if(ix<0x31800000) { /* x < 2**-28 */ 49 if ((int) x == 0) { /* generate inexact */ | 17#endif 18 19#include "math.h" 20#include "math_private.h" 21static const float 22one = 1.0000000000e+00, /* 0x3f800000 */ 23pio4 = 7.8539812565e-01, /* 0x3f490fda */ 24pio4lo= 3.7748947079e-08, /* 0x33222168 */ --- 17 unchanged lines hidden (view full) --- 42__kernel_tanf(float x, float y, int iy) 43{ 44 float z,r,v,w,s; 45 int32_t ix,hx; 46 GET_FLOAT_WORD(hx,x); 47 ix = hx&0x7fffffff; /* high word of |x| */ 48 if(ix<0x31800000) { /* x < 2**-28 */ 49 if ((int) x == 0) { /* generate inexact */ |
| 50 if ((ix | (iy + 1)) == 0) 51 return one / fabsf(x); 52 else { | 50 { |
| 53 if (iy == 1) 54 return x; 55 else { /* compute -1 / (x+y) carefully */ 56 float a, t; 57 58 z = w = x + y; 59 GET_FLOAT_WORD(ix, z); 60 SET_FLOAT_WORD(z, ix & 0xfffff000); --- 49 unchanged lines hidden --- | 51 if (iy == 1) 52 return x; 53 else { /* compute -1 / (x+y) carefully */ 54 float a, t; 55 56 z = w = x + y; 57 GET_FLOAT_WORD(ix, z); 58 SET_FLOAT_WORD(z, ix & 0xfffff000); --- 49 unchanged lines hidden --- |