vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
Log | Files | Refs

w_acosh.c (898B)

      1 /* @(#)w_acosh.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
     14 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_acosh.c,v 1.7 2002/05/28 18:15:04 alfred Exp $";
     15 #endif
     16 
     17 /*
     18  * wrapper acosh(x)
     19  */
     20 
     21 #include "math.h"
     22 #include "math_private.h"
     23 
     24 double
     25 acosh(double x)		/* wrapper acosh */
     26 {
     27 #ifdef _IEEE_LIBM
     28 	return __ieee754_acosh(x);
     29 #else
     30 	double z;
     31 	z = __ieee754_acosh(x);
     32 	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
     33 	if(x<1.0) {
     34 	        return __kernel_standard(x,x,29); /* acosh(x<1) */
     35 	} else
     36 	    return z;
     37 #endif
     38 }