1 2 /* @(#)w_j1.c 1.3 95/01/18 */ 3 /* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunSoft, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 14 /* 15 * wrapper of j1,y1 16 */ 17 18 #include "fdlibm.h" 19 20 #ifdef __STDC__ 21 double ieee_j1(double x) /* wrapper j1 */ 22 #else 23 double ieee_j1(x) /* wrapper j1 */ 24 double x; 25 #endif 26 { 27 #ifdef _IEEE_LIBM 28 return __ieee754_j1(x); 29 #else 30 double z; 31 z = __ieee754_j1(x); 32 if(_LIB_VERSION == _IEEE_ || ieee_isnan(x) ) return z; 33 if(ieee_fabs(x)>X_TLOSS) { 34 return __kernel_standard(x,x,36); /* ieee_j1(|x|>X_TLOSS) */ 35 } else 36 return z; 37 #endif 38 } 39 40 #ifdef __STDC__ 41 double ieee_y1(double x) /* wrapper y1 */ 42 #else 43 double ieee_y1(x) /* wrapper y1 */ 44 double x; 45 #endif 46 { 47 #ifdef _IEEE_LIBM 48 return __ieee754_y1(x); 49 #else 50 double z; 51 z = __ieee754_y1(x); 52 if(_LIB_VERSION == _IEEE_ || ieee_isnan(x) ) return z; 53 if(x <= 0.0){ 54 if(x==0.0) 55 /* d= -one/(x-x); */ 56 return __kernel_standard(x,x,10); 57 else 58 /* d = zero/(x-x); */ 59 return __kernel_standard(x,x,11); 60 } 61 if(x>X_TLOSS) { 62 return __kernel_standard(x,x,37); /* ieee_y1(x>X_TLOSS) */ 63 } else 64 return z; 65 #endif 66 } 67
