1 /* w_jnf.c -- float version of w_jn.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 #include <sys/cdefs.h> 17 #if defined(LIBM_SCCS) && !defined(lint) 18 __RCSID("$NetBSD: w_jnf.c,v 1.6 2002/05/26 22:02:02 wiz Exp $"); 19 #endif 20 21 #include "math.h" 22 #include "math_private.h" 23 24 float 25 jnf(int n, float x) /* wrapper jnf */ 26 { 27 #ifdef _IEEE_LIBM 28 return __ieee754_jnf(n,x); 29 #else 30 float z; 31 z = __ieee754_jnf(n,x); 32 if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z; 33 if(fabsf(x)>(float)X_TLOSS) { 34 /* jn(|x|>X_TLOSS,n) */ 35 return (float)__kernel_standard((double)n,(double)x,138); 36 } else 37 return z; 38 #endif 39 } 40 41 float 42 ynf(int n, float x) /* wrapper ynf */ 43 { 44 #ifdef _IEEE_LIBM 45 return __ieee754_ynf(n,x); 46 #else 47 float z; 48 z = __ieee754_ynf(n,x); 49 if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z; 50 if(x <= (float)0.0){ 51 if(x==(float)0.0) 52 /* d= -one/(x-x); */ 53 return (float)__kernel_standard((double)n,(double)x,112); 54 else 55 /* d = zero/(x-x); */ 56 return (float)__kernel_standard((double)n,(double)x,113); 57 } 58 if(x>(float)X_TLOSS) { 59 /* yn(x>X_TLOSS,n) */ 60 return (float)__kernel_standard((double)n,(double)x,139); 61 } else 62 return z; 63 #endif 64 } 65