| 1 | /* wf_jn.c -- float version of w_jn.c. |
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| 2 | * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
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| 3 | */ |
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| 4 | |
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| 5 | /* |
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| 6 | * ==================================================== |
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| 7 | * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
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| 8 | * |
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| 9 | * Developed at SunPro, a Sun Microsystems, Inc. business. |
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| 10 | * Permission to use, copy, modify, and distribute this |
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| 11 | * software is freely granted, provided that this notice |
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| 12 | * is preserved. |
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| 13 | * ==================================================== |
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| 14 | */ |
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| 15 | |
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| 16 | #include "fdlibm.h" |
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| 17 | #include <errno.h> |
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| 18 | |
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| 19 | |
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| 20 | #ifdef __STDC__ |
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| 21 | float jnf(int n, float x) /* wrapper jnf */ |
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| 22 | #else |
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| 23 | float jnf(n,x) /* wrapper jnf */ |
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| 24 | float x; int n; |
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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_jnf(n,x); |
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| 29 | #else |
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| 30 | float z; |
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| 31 | struct exception exc; |
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| 32 | z = __ieee754_jnf(n,x); |
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| 33 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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| 34 | if(fabsf(x)>(float)X_TLOSS) { |
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| 35 | /* jnf(|x|>X_TLOSS) */ |
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| 36 | exc.type = TLOSS; |
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| 37 | exc.name = "jnf"; |
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| 38 | exc.err = 0; |
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| 39 | exc.arg1 = (double)n; |
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| 40 | exc.arg2 = (double)x; |
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| 41 | exc.retval = 0.0; |
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| 42 | if (_LIB_VERSION == _POSIX_) |
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| 43 | errno = ERANGE; |
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| 44 | else if (!matherr(&exc)) { |
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| 45 | errno = ERANGE; |
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| 46 | } |
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| 47 | if (exc.err != 0) |
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| 48 | errno = exc.err; |
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| 49 | return exc.retval; |
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| 50 | } else |
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| 51 | return z; |
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| 52 | #endif |
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| 53 | } |
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| 54 | |
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| 55 | #ifdef __STDC__ |
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| 56 | float ynf(int n, float x) /* wrapper ynf */ |
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| 57 | #else |
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| 58 | float ynf(n,x) /* wrapper ynf */ |
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| 59 | float x; int n; |
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| 60 | #endif |
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| 61 | { |
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| 62 | #ifdef _IEEE_LIBM |
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| 63 | return __ieee754_ynf(n,x); |
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| 64 | #else |
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| 65 | float z; |
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| 66 | struct exception exc; |
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| 67 | z = __ieee754_ynf(n,x); |
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| 68 | if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z; |
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| 69 | if(x <= (float)0.0){ |
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| 70 | /* ynf(n,0) = -inf or ynf(x<0) = NaN */ |
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| 71 | #ifndef HUGE_VAL |
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| 72 | #define HUGE_VAL inf |
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| 73 | double inf = 0.0; |
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| 74 | |
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| 75 | SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ |
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| 76 | #endif |
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| 77 | exc.type = DOMAIN; /* should be SING for IEEE */ |
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| 78 | exc.name = "ynf"; |
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| 79 | exc.err = 0; |
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| 80 | exc.arg1 = (double)n; |
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| 81 | exc.arg2 = (double)x; |
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| 82 | if (_LIB_VERSION == _SVID_) |
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| 83 | exc.retval = -HUGE; |
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| 84 | else |
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| 85 | exc.retval = -HUGE_VAL; |
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| 86 | if (_LIB_VERSION == _POSIX_) |
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| 87 | errno = EDOM; |
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| 88 | else if (!matherr(&exc)) { |
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| 89 | errno = EDOM; |
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| 90 | } |
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| 91 | if (exc.err != 0) |
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| 92 | errno = exc.err; |
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| 93 | return (float)exc.retval; |
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| 94 | } |
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| 95 | if(x>(float)X_TLOSS) { |
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| 96 | /* ynf(x>X_TLOSS) */ |
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| 97 | exc.type = TLOSS; |
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| 98 | exc.name = "ynf"; |
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| 99 | exc.err = 0; |
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| 100 | exc.arg1 = (double)n; |
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| 101 | exc.arg2 = (double)x; |
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| 102 | exc.retval = 0.0; |
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| 103 | if (_LIB_VERSION == _POSIX_) |
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| 104 | errno = ERANGE; |
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| 105 | else if (!matherr(&exc)) { |
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| 106 | errno = ERANGE; |
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| 107 | } |
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| 108 | if (exc.err != 0) |
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| 109 | errno = exc.err; |
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| 110 | return (float)exc.retval; |
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| 111 | } else |
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| 112 | return z; |
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| 113 | #endif |
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| 114 | } |
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| 115 | |
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| 116 | #ifdef _DOUBLE_IS_32BITS |
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| 117 | |
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| 118 | #ifdef __STDC__ |
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| 119 | double jn(int n, double x) |
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| 120 | #else |
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| 121 | double jn(n,x) |
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| 122 | double x; int n; |
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| 123 | #endif |
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| 124 | { |
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| 125 | return (double) jnf(n, (float) x); |
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| 126 | } |
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| 127 | |
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| 128 | #ifdef __STDC__ |
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| 129 | double yn(int n, double x) |
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| 130 | #else |
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| 131 | double yn(n,x) |
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| 132 | double x; int n; |
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| 133 | #endif |
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| 134 | { |
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| 135 | return (double) ynf(n, (float) x); |
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| 136 | } |
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| 137 | |
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| 138 | #endif /* defined(_DOUBLE_IS_32BITS) */ |
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