/* @(#)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 */ #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 (EDOM); 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 (EDOM); 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 (EDOM); 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 (EDOM); 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: /* gamma(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: /* gamma(-integer) or gamma(0) */ 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; /* #### Last used is 47/147/247 ### */ } return exc.retval; }