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 #if defined(LIBM_SCCS) && !defined(lint) 14 static char rcsid[] = "$NetBSD: w_j1.c,v 1.6 1995/05/10 20:49:15 jtc Exp $"; 15 #endif 16 17 /* 18 * wrapper of j1,y1 19 */ 20 21 #include "math.h" 22 #include "math_private.h" 23 24 #ifdef __STDC__ 25 double j1(double x) /* wrapper j1 */ 26 #else 27 double j1(x) /* wrapper j1 */ 28 double x; 29 #endif 30 { 31 #ifdef _IEEE_LIBM 32 return __ieee754_j1(x); 33 #else 34 double z; 35 z = __ieee754_j1(x); 36 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 37 if(fabs(x)>X_TLOSS) { 38 return __kernel_standard(x,x,36); /* j1(|x|>X_TLOSS) */ 39 } else 40 return z; 41 #endif 42 } 43 44 #ifdef __STDC__ 45 double y1(double x) /* wrapper y1 */ 46 #else 47 double y1(x) /* wrapper y1 */ 48 double x; 49 #endif 50 { 51 #ifdef _IEEE_LIBM 52 return __ieee754_y1(x); 53 #else 54 double z; 55 z = __ieee754_y1(x); 56 if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; 57 if(x <= 0.0){ 58 if(x==0.0) 59 /* d= -one/(x-x); */ 60 return __kernel_standard(x,x,10); 61 else 62 /* d = zero/(x-x); */ 63 return __kernel_standard(x,x,11); 64 } 65 if(x>X_TLOSS) { 66 return __kernel_standard(x,x,37); /* y1(x>X_TLOSS) */ 67 } else 68 return z; 69 #endif 70 } 71