support/fdlibm/w_acos.c
author Jan Vrany <jan.vrany@fit.cvut.cz>
Wed, 23 Jan 2013 12:31:33 +0000
branchdevelopment
changeset 1988 0fcf5a5dcb66
parent 1818 2e5ed72e7dfd
child 2380 9195eccdcbd9
permissions -rw-r--r--
Cleanup in JavaRelease: javaHome/jreHome/jdkHome.


/* @(#)w_acos.c 1.3 95/01/18 */
/*
 * ====================================================
 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
 *
 * Developed at SunSoft, a Sun Microsystems, Inc. business.
 * Permission to use, copy, modify, and distribute this
 * software is freely granted, provided that this notice 
 * is preserved.
 * ====================================================
 */

/*
 * wrap_acos(x)
 */

#include "fdlibm.h"


#ifdef __STDC__
	double acos(double x)		/* wrapper acos */
#else
	double acos(x)			/* wrapper acos */
	double x;
#endif
{
#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
}