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glibc/math/w_acosh.c
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| /* @(#)w_acosh.c 5.1 93/09/24 */ | |
| /* | |
| * ==================================================== | |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. | |
| * | |
| * Developed at SunPro, a Sun Microsystems, Inc. business. | |
| * Permission to use, copy, modify, and distribute this | |
| * software is freely granted, provided that this notice | |
| * is preserved. | |
| * ==================================================== | |
| */ | |
| #if defined(LIBM_SCCS) && !defined(lint) | |
| static char rcsid[] = "$NetBSD: w_acosh.c,v 1.6 1995/05/10 20:48:31 jtc Exp $"; | |
| #endif | |
| /* | |
| * wrapper acosh(x) | |
| */ | |
| #include "math.h" | |
| #include "math_private.h" | |
| #ifdef __STDC__ | |
| double __acosh(double x) /* wrapper acosh */ | |
| #else | |
| double __acosh(x) /* wrapper acosh */ | |
| double x; | |
| #endif | |
| { | |
| #ifdef _IEEE_LIBM | |
| return __ieee754_acosh(x); | |
| #else | |
| double z; | |
| z = __ieee754_acosh(x); | |
| if(_LIB_VERSION == _IEEE_ || __isnan(x)) return z; | |
| if(x<1.0) { | |
| return __kernel_standard(x,x,29); /* acosh(x<1) */ | |
| } else | |
| return z; | |
| #endif | |
| } | |
| weak_alias (__acosh, acosh) | |
| #ifdef NO_LONG_DOUBLE | |
| strong_alias (__acosh, __acoshl) | |
| weak_alias (__acosh, acoshl) | |
| #endif |