| /* @(#)k_standard.c 5.1 93/09/24 */ |
| /* |
| * ==================================================== |
| * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
| * |
| * Developed at SunPro, a Sun Microsystems, Inc. business. |
| * Permission to use, copy, modify, and distribute this |
| * software is freely granted, provided that this notice |
| * is preserved. |
| * ==================================================== |
| */ |
| |
| #if defined(LIBM_SCCS) && !defined(lint) |
| static char rcsid[] = "$NetBSD: k_standard.c,v 1.6 1995/05/10 20:46:35 jtc Exp $"; |
| #endif |
| |
| #include "math.h" |
| #include "math_private.h" |
| #include <errno.h> |
| |
| #include <assert.h> |
| |
| #ifndef _USE_WRITE |
| #include <stdio.h> /* fputs(), stderr */ |
| #define WRITE2(u,v) fputs(u, stderr) |
| #else /* !defined(_USE_WRITE) */ |
| #include <unistd.h> /* write */ |
| #define WRITE2(u,v) write(2, u, v) |
| #undef fflush |
| #endif /* !defined(_USE_WRITE) */ |
| |
| /* XXX gcc versions until now don't delay the 0.0/0.0 division until |
| runtime but produce NaN at copile time. This is wrong since the |
| exceptions are not set correctly. */ |
| #if 0 && defined __STDC__ |
| static const double zero = 0.0; /* used as const */ |
| #else |
| static double zero = 0.0; /* used as const */ |
| #endif |
| |
| /* |
| * Standard conformance (non-IEEE) on exception cases. |
| * Mapping: |
| * 1 -- acos(|x|>1) |
| * 2 -- asin(|x|>1) |
| * 3 -- atan2(+-0,+-0) |
| * 4 -- hypot overflow |
| * 5 -- cosh overflow |
| * 6 -- exp overflow |
| * 7 -- exp underflow |
| * 8 -- y0(0) |
| * 9 -- y0(-ve) |
| * 10-- y1(0) |
| * 11-- y1(-ve) |
| * 12-- yn(0) |
| * 13-- yn(-ve) |
| * 14-- lgamma(finite) overflow |
| * 15-- lgamma(-integer) |
| * 16-- log(0) |
| * 17-- log(x<0) |
| * 18-- log10(0) |
| * 19-- log10(x<0) |
| * 20-- pow(0.0,0.0) |
| * 21-- pow(x,y) overflow |
| * 22-- pow(x,y) underflow |
| * 23-- pow(0,negative) |
| * 24-- pow(neg,non-integral) |
| * 25-- sinh(finite) overflow |
| * 26-- sqrt(negative) |
| * 27-- fmod(x,0) |
| * 28-- remainder(x,0) |
| * 29-- acosh(x<1) |
| * 30-- atanh(|x|>1) |
| * 31-- atanh(|x|=1) |
| * 32-- scalb overflow |
| * 33-- scalb underflow |
| * 34-- j0(|x|>X_TLOSS) |
| * 35-- y0(x>X_TLOSS) |
| * 36-- j1(|x|>X_TLOSS) |
| * 37-- y1(x>X_TLOSS) |
| * 38-- jn(|x|>X_TLOSS, n) |
| * 39-- yn(x>X_TLOSS, n) |
| * 40-- tgamma(finite) overflow |
| * 41-- tgamma(-integer) |
| * 42-- pow(NaN,0.0) |
| * 43-- +0**neg |
| * 44-- exp2 overflow |
| * 45-- exp2 underflow |
| * 46-- exp10 overflow |
| * 47-- exp10 underflow |
| * 48-- log2(0) |
| * 49-- log2(x<0) |
| * 50-- tgamma(+-0) |
| */ |
| |
| |
| #ifdef __STDC__ |
| double __kernel_standard(double x, double y, int type) |
| #else |
| double __kernel_standard(x,y,type) |
| double x,y; int type; |
| #endif |
| { |
| struct exception exc; |
| #ifndef HUGE_VAL /* this is the only routine that uses HUGE_VAL */ |
| #define HUGE_VAL inf |
| double inf = 0.0; |
| |
| SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ |
| #endif |
| |
| #ifdef _USE_WRITE |
| (void) fflush(stdout); |
| #endif |
| exc.arg1 = x; |
| exc.arg2 = y; |
| switch(type) { |
| case 1: |
| case 101: |
| case 201: |
| /* acos(|x|>1) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "acos" : (type < 200 |
| ? "acosf" : "acosl");; |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = NAN; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if(_LIB_VERSION == _SVID_) { |
| (void) WRITE2("acos: DOMAIN error\n", 19); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 2: |
| case 102: |
| case 202: |
| /* asin(|x|>1) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "asin" : (type < 200 |
| ? "asinf" : "asinl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = NAN; |
| if(_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if(_LIB_VERSION == _SVID_) { |
| (void) WRITE2("asin: DOMAIN error\n", 19); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 3: |
| case 103: |
| case 203: |
| /* atan2(+-0,+-0) */ |
| exc.arg1 = y; |
| exc.arg2 = x; |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "atan2" : (type < 200 |
| ? "atan2f" : "atan2l"); |
| assert (_LIB_VERSION == _SVID_); |
| exc.retval = HUGE; |
| if(_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if(_LIB_VERSION == _SVID_) { |
| (void) WRITE2("atan2: DOMAIN error\n", 20); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 4: |
| case 104: |
| case 204: |
| /* hypot(finite,finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "hypot" : (type < 200 |
| ? "hypotf" : "hypotl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 5: |
| case 105: |
| case 205: |
| /* cosh(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "cosh" : (type < 200 |
| ? "coshf" : "coshl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 6: |
| case 106: |
| case 206: |
| /* exp(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "exp" : (type < 200 |
| ? "expf" : "expl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 7: |
| case 107: |
| case 207: |
| /* exp(finite) underflow */ |
| exc.type = UNDERFLOW; |
| exc.name = type < 100 ? "exp" : (type < 200 |
| ? "expf" : "expl"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 8: |
| case 108: |
| case 208: |
| /* y0(0) = -inf */ |
| exc.type = DOMAIN; /* should be SING for IEEE */ |
| exc.name = type < 100 ? "y0" : (type < 200 ? "y0f" : "y0l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("y0: DOMAIN error\n", 17); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 9: |
| case 109: |
| case 209: |
| /* y0(x<0) = NaN */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "y0" : (type < 200 ? "y0f" : "y0l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("y0: DOMAIN error\n", 17); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 10: |
| case 110: |
| case 210: |
| /* y1(0) = -inf */ |
| exc.type = DOMAIN; /* should be SING for IEEE */ |
| exc.name = type < 100 ? "y1" : (type < 200 ? "y1f" : "y1l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("y1: DOMAIN error\n", 17); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 11: |
| case 111: |
| case 211: |
| /* y1(x<0) = NaN */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "y1" : (type < 200 ? "y1f" : "y1l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("y1: DOMAIN error\n", 17); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 12: |
| case 112: |
| case 212: |
| /* yn(n,0) = -inf */ |
| exc.type = DOMAIN; /* should be SING for IEEE */ |
| exc.name = type < 100 ? "yn" : (type < 200 ? "ynf" : "ynl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("yn: DOMAIN error\n", 17); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 13: |
| case 113: |
| case 213: |
| /* yn(x<0) = NaN */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "yn" : (type < 200 ? "ynf" : "ynl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("yn: DOMAIN error\n", 17); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 14: |
| case 114: |
| case 214: |
| /* lgamma(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "lgamma" : (type < 200 |
| ? "lgammaf" : "lgammal"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 15: |
| case 115: |
| case 215: |
| /* lgamma(-integer) or lgamma(0) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "lgamma" : (type < 200 |
| ? "lgammaf" : "lgammal"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("lgamma: SING error\n", 19); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 16: |
| case 116: |
| case 216: |
| /* log(0) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "log" : (type < 200 ? "logf" : "logl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("log: SING error\n", 16); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 17: |
| case 117: |
| case 217: |
| /* log(x<0) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "log" : (type < 200 ? "logf" : "logl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = NAN; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("log: DOMAIN error\n", 18); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 18: |
| case 118: |
| case 218: |
| /* log10(0) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "log10" : (type < 200 |
| ? "log10f" : "log10l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("log10: SING error\n", 18); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 19: |
| case 119: |
| case 219: |
| /* log10(x<0) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "log10" : (type < 200 |
| ? "log10f" : "log10l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = NAN; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("log10: DOMAIN error\n", 20); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 20: |
| case 120: |
| case 220: |
| /* pow(0.0,0.0) */ |
| /* error only if _LIB_VERSION == _SVID_ */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| exc.retval = zero; |
| if (_LIB_VERSION != _SVID_) exc.retval = 1.0; |
| else if (!matherr(&exc)) { |
| (void) WRITE2("pow(0,0): DOMAIN error\n", 23); |
| __set_errno (EDOM); |
| } |
| break; |
| case 21: |
| case 121: |
| case 221: |
| /* pow(x,y) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| if (_LIB_VERSION == _SVID_) { |
| exc.retval = HUGE; |
| y *= 0.5; |
| if(x<zero&&__rint(y)!=y) exc.retval = -HUGE; |
| } else { |
| exc.retval = HUGE_VAL; |
| y *= 0.5; |
| if(x<zero&&__rint(y)!=y) exc.retval = -HUGE_VAL; |
| } |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 22: |
| case 122: |
| case 222: |
| /* pow(x,y) underflow */ |
| exc.type = UNDERFLOW; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 23: |
| case 123: |
| case 223: |
| /* -0**neg */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = zero; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 43: |
| case 143: |
| case 243: |
| /* +0**neg */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = zero; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("pow(0,neg): DOMAIN error\n", 25); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 24: |
| case 124: |
| case 224: |
| /* neg**non-integral */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = zero; |
| else |
| exc.retval = zero/zero; /* X/Open allow NaN */ |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("neg**non-integral: DOMAIN error\n", 32); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 25: |
| case 125: |
| case 225: |
| /* sinh(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "sinh" : (type < 200 |
| ? "sinhf" : "sinhl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = ( (x>zero) ? HUGE : -HUGE); |
| else |
| exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL); |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 26: |
| case 126: |
| case 226: |
| /* sqrt(x<0) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "sqrt" : (type < 200 |
| ? "sqrtf" : "sqrtl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = zero; |
| else |
| exc.retval = zero/zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("sqrt: DOMAIN error\n", 19); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 27: |
| case 127: |
| case 227: |
| /* fmod(x,0) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "fmod" : (type < 200 |
| ? "fmodf" : "fmodl"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = x; |
| else |
| exc.retval = zero/zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("fmod: DOMAIN error\n", 20); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 28: |
| case 128: |
| case 228: |
| /* remainder(x,0) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "remainder" : (type < 200 |
| ? "remainderf" |
| : "remainderl"); |
| exc.retval = zero/zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("remainder: DOMAIN error\n", 24); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 29: |
| case 129: |
| case 229: |
| /* acosh(x<1) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "acosh" : (type < 200 |
| ? "acoshf" : "acoshl"); |
| exc.retval = zero/zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("acosh: DOMAIN error\n", 20); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 30: |
| case 130: |
| case 230: |
| /* atanh(|x|>1) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "atanh" : (type < 200 |
| ? "atanhf" : "atanhl"); |
| exc.retval = zero/zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("atanh: DOMAIN error\n", 20); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 31: |
| case 131: |
| case 231: |
| /* atanh(|x|=1) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "atanh" : (type < 200 |
| ? "atanhf" : "atanhl"); |
| exc.retval = x/zero; /* sign(x)*inf */ |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("atanh: SING error\n", 18); |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 32: |
| case 132: |
| case 232: |
| /* scalb overflow; SVID also returns +-HUGE_VAL */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "scalb" : (type < 200 |
| ? "scalbf" : "scalbl"); |
| exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 33: |
| case 133: |
| case 233: |
| /* scalb underflow */ |
| exc.type = UNDERFLOW; |
| exc.name = type < 100 ? "scalb" : (type < 200 |
| ? "scalbf" : "scalbl"); |
| exc.retval = __copysign(zero,x); |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 34: |
| case 134: |
| case 234: |
| /* j0(|x|>X_TLOSS) */ |
| exc.type = TLOSS; |
| exc.name = type < 100 ? "j0" : (type < 200 ? "j0f" : "j0l"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2(exc.name, 2); |
| (void) WRITE2(": TLOSS error\n", 14); |
| } |
| __set_errno (ERANGE); |
| } |
| break; |
| case 35: |
| case 135: |
| case 235: |
| /* y0(x>X_TLOSS) */ |
| exc.type = TLOSS; |
| exc.name = type < 100 ? "y0" : (type < 200 ? "y0f" : "y0l"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2(exc.name, 2); |
| (void) WRITE2(": TLOSS error\n", 14); |
| } |
| __set_errno (ERANGE); |
| } |
| break; |
| case 36: |
| case 136: |
| case 236: |
| /* j1(|x|>X_TLOSS) */ |
| exc.type = TLOSS; |
| exc.name = type < 100 ? "j1" : (type < 200 ? "j1f" : "j1l"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2(exc.name, 2); |
| (void) WRITE2(": TLOSS error\n", 14); |
| } |
| __set_errno (ERANGE); |
| } |
| break; |
| case 37: |
| case 137: |
| case 237: |
| /* y1(x>X_TLOSS) */ |
| exc.type = TLOSS; |
| exc.name = type < 100 ? "y1" : (type < 200 ? "y1f" : "y1l"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2(exc.name, 2); |
| (void) WRITE2(": TLOSS error\n", 14); |
| } |
| __set_errno (ERANGE); |
| } |
| break; |
| case 38: |
| case 138: |
| case 238: |
| /* jn(|x|>X_TLOSS) */ |
| exc.type = TLOSS; |
| exc.name = type < 100 ? "jn" : (type < 200 ? "jnf" : "jnl"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2(exc.name, 2); |
| (void) WRITE2(": TLOSS error\n", 14); |
| } |
| __set_errno (ERANGE); |
| } |
| break; |
| case 39: |
| case 139: |
| case 239: |
| /* yn(x>X_TLOSS) */ |
| exc.type = TLOSS; |
| exc.name = type < 100 ? "yn" : (type < 200 ? "ynf" : "ynl"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2(exc.name, 2); |
| (void) WRITE2(": TLOSS error\n", 14); |
| } |
| __set_errno (ERANGE); |
| } |
| break; |
| case 40: |
| case 140: |
| case 240: |
| /* tgamma(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "tgamma" : (type < 200 |
| ? "tgammaf" : "tgammal"); |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 41: |
| case 141: |
| case 241: |
| /* tgamma(-integer) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "tgamma" : (type < 200 |
| ? "tgammaf" : "tgammal"); |
| exc.retval = NAN; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) { |
| (void) WRITE2("tgamma: SING error\n", 18); |
| exc.retval = HUGE_VAL; |
| } |
| __set_errno (EDOM); |
| } |
| break; |
| case 42: |
| case 142: |
| case 242: |
| /* pow(NaN,0.0) */ |
| /* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "pow" : (type < 200 ? "powf" : "powl"); |
| exc.retval = x; |
| if (_LIB_VERSION == _IEEE_ || |
| _LIB_VERSION == _POSIX_) exc.retval = 1.0; |
| else if (!matherr(&exc)) { |
| __set_errno (EDOM); |
| } |
| break; |
| |
| case 44: |
| case 144: |
| case 244: |
| /* exp(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "exp2" : (type < 200 |
| ? "exp2f" : "exp2l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 45: |
| case 145: |
| case 245: |
| /* exp(finite) underflow */ |
| exc.type = UNDERFLOW; |
| exc.name = type < 100 ? "exp2" : (type < 200 |
| ? "exp2f" : "exp2l"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| |
| case 46: |
| case 146: |
| case 246: |
| /* exp(finite) overflow */ |
| exc.type = OVERFLOW; |
| exc.name = type < 100 ? "exp10" : (type < 200 |
| ? "exp10f" : "exp10l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = HUGE; |
| else |
| exc.retval = HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 47: |
| case 147: |
| case 247: |
| /* exp(finite) underflow */ |
| exc.type = UNDERFLOW; |
| exc.name = type < 100 ? "exp10" : (type < 200 |
| ? "exp10f" : "exp10l"); |
| exc.retval = zero; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (ERANGE); |
| } |
| break; |
| case 48: |
| case 148: |
| case 248: |
| /* log2(0) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "log2" : (type < 200 |
| ? "log2f" : "log2l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = -HUGE_VAL; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| __set_errno (EDOM); |
| } |
| break; |
| case 49: |
| case 149: |
| case 249: |
| /* log2(x<0) */ |
| exc.type = DOMAIN; |
| exc.name = type < 100 ? "log2" : (type < 200 |
| ? "log2f" : "log2l"); |
| if (_LIB_VERSION == _SVID_) |
| exc.retval = -HUGE; |
| else |
| exc.retval = NAN; |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (EDOM); |
| else if (!matherr(&exc)) { |
| __set_errno (EDOM); |
| } |
| break; |
| case 50: |
| case 150: |
| case 250: |
| /* tgamma(+-0) */ |
| exc.type = SING; |
| exc.name = type < 100 ? "tgamma" : (type < 200 |
| ? "tgammaf" : "tgammal"); |
| exc.retval = __copysign (HUGE_VAL, x); |
| if (_LIB_VERSION == _POSIX_) |
| __set_errno (ERANGE); |
| else if (!matherr(&exc)) { |
| if (_LIB_VERSION == _SVID_) |
| (void) WRITE2("tgamma: SING error\n", 18); |
| __set_errno (ERANGE); |
| } |
| break; |
| |
| /* #### Last used is 50/150/250 ### */ |
| } |
| return exc.retval; |
| } |
