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 1.8 1999/07/02 15:37:44 simonb Exp $"); 16 #endif 17 18 /* 19 * wrapper of j1,y1 20 */ 21 22 #include "math.h" 23 #include "math_private.h" 24 25 #ifdef __STDC__ 26 double j1(double x) /* wrapper j1 */ 27 #else 28 double j1(x) /* wrapper j1 */ 29 double x; 30 #endif 31 { 32 #ifdef _IEEE_LIBM 33 return __ieee754_j1(x); 34 #else 35 double z; 36 z = __ieee754_j1(x); 37 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 38 if(fabs(x)>X_TLOSS) { 39 return __kernel_standard(x,x,36); /* j1(|x|>X_TLOSS) */ 40 } else 41 return z; 42 #endif 43 } 44 45 #ifdef __STDC__ 46 double y1(double x) /* wrapper y1 */ 47 #else 48 double y1(x) /* wrapper y1 */ 49 double x; 50 #endif 51 { 52 #ifdef _IEEE_LIBM 53 return __ieee754_y1(x); 54 #else 55 double z; 56 z = __ieee754_y1(x); 57 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 58 if(x <= 0.0){ 59 if(x==0.0) 60 /* d= -one/(x-x); */ 61 return __kernel_standard(x,x,10); 62 else 63 /* d = zero/(x-x); */ 64 return __kernel_standard(x,x,11); 65 } 66 if(x>X_TLOSS) { 67 return __kernel_standard(x,x,37); /* y1(x>X_TLOSS) */ 68 } else 69 return z; 70 #endif 71 } 72