| /* @(#)w_acos.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. | |
| * ==================================================== | |
| */ | |
| #include <LibConfig.h> | |
| #include <sys/EfiCdefs.h> | |
| #if defined(LIBM_SCCS) && !defined(lint) | |
| __RCSID("$NetBSD: w_acos.c,v 1.9 2002/05/26 22:01:59 wiz Exp $"); | |
| #endif | |
| /* | |
| * wrap_acos(x) | |
| */ | |
| #include "math.h" | |
| #include "math_private.h" | |
| double | |
| acos(double x) /* wrapper acos */ | |
| { | |
| #ifdef _IEEE_LIBM | |
| return __ieee754_acos(x); | |
| #else | |
| double z; | |
| z = __ieee754_acos(x); | |
| if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; | |
| if(fabs(x)>1.0) { | |
| return __kernel_standard(x,x,1); /* acos(|x|>1) */ | |
| } else | |
| return z; | |
| #endif | |
| } |