| e_acos.c (176451) | e_acos.c (181062) |
|---|---|
| 1 2/* @(#)e_acos.c 1.3 95/01/18 */ 3/* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 14#include <sys/cdefs.h> | 1 2/* @(#)e_acos.c 1.3 95/01/18 */ 3/* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 14#include <sys/cdefs.h> |
| 15__FBSDID("$FreeBSD: head/lib/msun/src/e_acos.c 176451 2008-02-22 02:30:36Z das $"); | 15__FBSDID("$FreeBSD: head/lib/msun/src/e_acos.c 181062 2008-07-31 19:57:50Z das $"); |
| 16 17/* __ieee754_acos(x) 18 * Method : 19 * acos(x) = pi/2 - asin(x) 20 * acos(-x) = pi/2 + asin(x) 21 * For |x|<=0.5 22 * acos(x) = pi/2 - (x + x*x^2*R(x^2)) (see asin.c) 23 * For x>0.5 --- 15 unchanged lines hidden (view full) --- 39 */ 40 41#include "math.h" 42#include "math_private.h" 43 44static const double 45one= 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ 46pi = 3.14159265358979311600e+00, /* 0x400921FB, 0x54442D18 */ | 16 17/* __ieee754_acos(x) 18 * Method : 19 * acos(x) = pi/2 - asin(x) 20 * acos(-x) = pi/2 + asin(x) 21 * For |x|<=0.5 22 * acos(x) = pi/2 - (x + x*x^2*R(x^2)) (see asin.c) 23 * For x>0.5 --- 15 unchanged lines hidden (view full) --- 39 */ 40 41#include "math.h" 42#include "math_private.h" 43 44static const double 45one= 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ 46pi = 3.14159265358979311600e+00, /* 0x400921FB, 0x54442D18 */ |
| 47pio2_hi = 1.57079632679489655800e+00, /* 0x3FF921FB, 0x54442D18 */ 48pio2_lo = 6.12323399573676603587e-17, /* 0x3C91A626, 0x33145C07 */ | 47pio2_hi = 1.57079632679489655800e+00; /* 0x3FF921FB, 0x54442D18 */ 48static volatile double 49pio2_lo = 6.12323399573676603587e-17; /* 0x3C91A626, 0x33145C07 */ 50static const double |
| 49pS0 = 1.66666666666666657415e-01, /* 0x3FC55555, 0x55555555 */ 50pS1 = -3.25565818622400915405e-01, /* 0xBFD4D612, 0x03EB6F7D */ 51pS2 = 2.01212532134862925881e-01, /* 0x3FC9C155, 0x0E884455 */ 52pS3 = -4.00555345006794114027e-02, /* 0xBFA48228, 0xB5688F3B */ 53pS4 = 7.91534994289814532176e-04, /* 0x3F49EFE0, 0x7501B288 */ 54pS5 = 3.47933107596021167570e-05, /* 0x3F023DE1, 0x0DFDF709 */ 55qS1 = -2.40339491173441421878e+00, /* 0xC0033A27, 0x1C8A2D4B */ 56qS2 = 2.02094576023350569471e+00, /* 0x40002AE5, 0x9C598AC8 */ --- 47 unchanged lines hidden --- | 51pS0 = 1.66666666666666657415e-01, /* 0x3FC55555, 0x55555555 */ 52pS1 = -3.25565818622400915405e-01, /* 0xBFD4D612, 0x03EB6F7D */ 53pS2 = 2.01212532134862925881e-01, /* 0x3FC9C155, 0x0E884455 */ 54pS3 = -4.00555345006794114027e-02, /* 0xBFA48228, 0xB5688F3B */ 55pS4 = 7.91534994289814532176e-04, /* 0x3F49EFE0, 0x7501B288 */ 56pS5 = 3.47933107596021167570e-05, /* 0x3F023DE1, 0x0DFDF709 */ 57qS1 = -2.40339491173441421878e+00, /* 0xC0033A27, 0x1C8A2D4B */ 58qS2 = 2.02094576023350569471e+00, /* 0x40002AE5, 0x9C598AC8 */ --- 47 unchanged lines hidden --- |