1 /* w_acoshf.c -- float version of w_acosh.c. 2 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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 #if defined(LIBM_SCCS) && !defined(lint) 18 static char rcsid[] = "$NetBSD: w_acoshf.c,v 1.3 1995/05/10 20:48:33 jtc Exp $"; 19 #endif 20 21 /* 22 * wrapper acoshf(x) 23 */ 24 25 #include "math.h" 26 #include "math_private.h" 27 28 #ifdef __STDC__ 29 float acoshf(float x) /* wrapper acoshf */ 30 #else 31 float acoshf(x) /* wrapper acoshf */ 32 float x; 33 #endif 34 { 35 #ifdef _IEEE_LIBM 36 return __ieee754_acoshf(x); 37 #else 38 float z; 39 z = __ieee754_acoshf(x); 40 if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z; 41 if(x<(float)1.0) { 42 /* acosh(x<1) */ 43 return (float)__kernel_standard((double)x,(double)x,129); 44 } else 45 return z; 46 #endif 47 } 48