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      1 /* w_acoshf.c -- float version of w_acosh.c.
      2  * Conversion to float by Ian Lance Taylor, Cygnus Support, ian (at) cygnus.com.
      3  */
      4 
      5 /*
      6  * ====================================================
      7  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
      8  *
      9  * Developed at SunPro, a Sun Microsystems, Inc. business.
     10  * Permission to use, copy, modify, and distribute this
     11  * software is freely granted, provided that this notice
     12  * is preserved.
     13  * ====================================================
     14  *
     15  */
     16 
     17 #include <sys/cdefs.h>
     18 #if defined(LIBM_SCCS) && !defined(lint)
     19 __RCSID("$NetBSD: w_acoshf.c,v 1.6 2002/05/26 22:01:59 wiz Exp $");
     20 #endif
     21 
     22 /*
     23  * wrapper acoshf(x)
     24  */
     25 
     26 #include "math.h"
     27 #include "math_private.h"
     28 
     29 float
     30 acoshf(float x)		/* wrapper acoshf */
     31 {
     32 #ifdef _IEEE_LIBM
     33 	return __ieee754_acoshf(x);
     34 #else
     35 	float z;
     36 	z = __ieee754_acoshf(x);
     37 	if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z;
     38 	if(x<(float)1.0) {
     39 		/* acosh(x<1) */
     40 	        return (float)__kernel_standard((double)x,(double)x,129);
     41 	} else
     42 	    return z;
     43 #endif
     44 }
     45