w_jnf.c (1006B)
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 #ifndef lint 17 static char rcsid[] = "$FreeBSD: src/lib/msun/src/w_jnf.c,v 1.8 2002/05/28 18:15:04 alfred Exp $"; 18 #endif 19 20 #include "math.h" 21 #include "math_private.h" 22 23 float 24 jnf(int n, float x) /* wrapper jnf */ 25 { 26 #ifdef _IEEE_LIBM 27 return __ieee754_jnf(n,x); 28 #else 29 float z; 30 z = __ieee754_jnf(n,x); 31 if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z; 32 if(fabsf(x)>(float)X_TLOSS) { 33 /* jn(|x|>X_TLOSS,n) */ 34 return (float)__kernel_standard((double)n,(double)x,138); 35 } else 36 return z; 37 #endif 38 }