1 /* @(#)w_j1.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 #include <sys/cdefs.h> 14 #if defined(LIBM_SCCS) && !defined(lint) 15 __RCSID("$NetBSD: w_j1.c,v 1.9 2002/05/26 22:02:01 wiz Exp $"); 16 #endif 17 18 /* 19 * wrapper of j1,y1 20 */ 21 22 #include "math.h" 23 #include "math_private.h" 24 25 double 26 j1(double x) /* wrapper j1 */ 27 { 28 #ifdef _IEEE_LIBM 29 return __ieee754_j1(x); 30 #else 31 double z; 32 z = __ieee754_j1(x); 33 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 34 if(fabs(x)>X_TLOSS) { 35 return __kernel_standard(x,x,36); /* j1(|x|>X_TLOSS) */ 36 } else 37 return z; 38 #endif 39 } 40 41 double 42 y1(double x) /* wrapper y1 */ 43 { 44 #ifdef _IEEE_LIBM 45 return __ieee754_y1(x); 46 #else 47 double z; 48 z = __ieee754_y1(x); 49 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 50 if(x <= 0.0){ 51 if(x==0.0) 52 /* d= -one/(x-x); */ 53 return __kernel_standard(x,x,10); 54 else 55 /* d = zero/(x-x); */ 56 return __kernel_standard(x,x,11); 57 } 58 if(x>X_TLOSS) { 59 return __kernel_standard(x,x,37); /* y1(x>X_TLOSS) */ 60 } else 61 return z; 62 #endif 63 } 64