/* @(#)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. * ==================================================== */ #if defined(LIBM_SCCS) && !defined(lint) static char rcsid[] = "$NetBSD: w_acos.c,v 1.6 1995/05/10 20:48:26 jtc 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 }