| 1 | |
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| 2 | /* @(#)w_j0.c 5.1 93/09/24 */ |
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| 3 | /* |
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| 4 | * ==================================================== |
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| 5 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 6 | * |
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| 7 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 8 | * Permission to use, copy, modify, and distribute this |
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| 9 | * software is freely granted, provided that this notice |
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| 10 | * is preserved. |
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| 11 | * ==================================================== |
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| 12 | */ |
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| 13 | |
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| 14 | /* |
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| 15 | * wrapper j0(double x), y0(double x) |
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| 16 | */ |
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| 17 | |
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| 18 | #include <libm/fdlibm.h> |
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| 19 | |
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| 20 | #ifdef __STDC__ |
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| 21 | double j0(double x) /* wrapper j0 */ |
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| 22 | #else |
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| 23 | double j0(x) /* wrapper j0 */ |
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| 24 | double x; |
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| 25 | #endif |
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| 26 | { |
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| 27 | #ifdef _IEEE_LIBM |
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| 28 | return __ieee754_j0(x); |
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| 29 | #else |
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| 30 | double z = __ieee754_j0(x); |
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| 31 | if(_LIB_VERSION == _IEEE_ || isnan(x)) return z; |
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| 32 | if(fabs(x)>X_TLOSS) { |
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| 33 | return __kernel_standard(x,x,34); /* j0(|x|>X_TLOSS) */ |
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| 34 | } else |
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| 35 | return z; |
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| 36 | #endif |
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| 37 | } |
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| 38 | |
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| 39 | #ifdef __STDC__ |
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| 40 | double y0(double x) /* wrapper y0 */ |
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| 41 | #else |
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| 42 | double y0(x) /* wrapper y0 */ |
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| 43 | double x; |
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| 44 | #endif |
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| 45 | { |
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| 46 | #ifdef _IEEE_LIBM |
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| 47 | return __ieee754_y0(x); |
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| 48 | #else |
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| 49 | double z; |
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| 50 | z = __ieee754_y0(x); |
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| 51 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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| 52 | if(x <= 0.0){ |
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| 53 | if(x==0.0) |
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| 54 | /* d= -one/(x-x); */ |
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| 55 | return __kernel_standard(x,x,8); |
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| 56 | else |
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| 57 | /* d = zero/(x-x); */ |
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| 58 | return __kernel_standard(x,x,9); |
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| 59 | } |
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| 60 | if(x>X_TLOSS) { |
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| 61 | return __kernel_standard(x,x,35); /* y0(x>X_TLOSS) */ |
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| 62 | } else |
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| 63 | return z; |
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| 64 | #endif |
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| 65 | } |
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