| s_asinh.c (97409) | s_asinh.c (97413) |
|---|---|
| 1/* @(#)s_asinh.c 5.1 93/09/24 */ 2/* 3 * ==================================================== 4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 5 * 6 * Developed at SunPro, a Sun Microsystems, Inc. business. 7 * Permission to use, copy, modify, and distribute this 8 * software is freely granted, provided that this notice 9 * is preserved. 10 * ==================================================== 11 */ 12 13#ifndef lint | 1/* @(#)s_asinh.c 5.1 93/09/24 */ 2/* 3 * ==================================================== 4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 5 * 6 * Developed at SunPro, a Sun Microsystems, Inc. business. 7 * Permission to use, copy, modify, and distribute this 8 * software is freely granted, provided that this notice 9 * is preserved. 10 * ==================================================== 11 */ 12 13#ifndef lint |
| 14static char rcsid[] = "$FreeBSD: head/lib/msun/src/s_asinh.c 97409 2002-05-28 17:51:46Z alfred $"; | 14static char rcsid[] = "$FreeBSD: head/lib/msun/src/s_asinh.c 97413 2002-05-28 18:15:04Z alfred $"; |
| 15#endif 16 17/* asinh(x) 18 * Method : 19 * Based on 20 * asinh(x) = sign(x) * log [ |x| + sqrt(x*x+1) ] 21 * we have 22 * asinh(x) := x if 1+x*x=1, --- 5 unchanged lines hidden (view full) --- 28#include "math.h" 29#include "math_private.h" 30 31static const double 32one = 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ 33ln2 = 6.93147180559945286227e-01, /* 0x3FE62E42, 0xFEFA39EF */ 34huge= 1.00000000000000000000e+300; 35 | 15#endif 16 17/* asinh(x) 18 * Method : 19 * Based on 20 * asinh(x) = sign(x) * log [ |x| + sqrt(x*x+1) ] 21 * we have 22 * asinh(x) := x if 1+x*x=1, --- 5 unchanged lines hidden (view full) --- 28#include "math.h" 29#include "math_private.h" 30 31static const double 32one = 1.00000000000000000000e+00, /* 0x3FF00000, 0x00000000 */ 33ln2 = 6.93147180559945286227e-01, /* 0x3FE62E42, 0xFEFA39EF */ 34huge= 1.00000000000000000000e+300; 35 |
| 36 double asinh(double x) | 36double 37asinh(double x) |
| 37{ 38 double t,w; 39 int32_t hx,ix; 40 GET_HIGH_WORD(hx,x); 41 ix = hx&0x7fffffff; 42 if(ix>=0x7ff00000) return x+x; /* x is inf or NaN */ 43 if(ix< 0x3e300000) { /* |x|<2**-28 */ 44 if(huge+x>one) return x; /* return x inexact except 0 */ --- 12 unchanged lines hidden --- | 38{ 39 double t,w; 40 int32_t hx,ix; 41 GET_HIGH_WORD(hx,x); 42 ix = hx&0x7fffffff; 43 if(ix>=0x7ff00000) return x+x; /* x is inf or NaN */ 44 if(ix< 0x3e300000) { /* |x|<2**-28 */ 45 if(huge+x>one) return x; /* return x inexact except 0 */ --- 12 unchanged lines hidden --- |