/* @(#)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 <math-svid-compat.h>

#include <errno.h>

#include <assert.h>

#if LIBM_SVID_COMPAT

# 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 compile time.  This is wrong since the

   exceptions are not set correctly.  */

# if 0

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)

 *	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)

 *	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)

 */

double

__kernel_standard(double x, double y, int type)

{

	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

	/* The SVID struct exception uses a field "char *name;".  */

# define CSTR(func) ((char *) (type < 100				\

			      ? func					\

			      : (type < 200 ? func "f" : func "l")))

# 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 = CSTR ("acos");

		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 = CSTR ("asin");

		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 = CSTR ("atan2");

		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 = CSTR ("hypot");

		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 = CSTR ("cosh");

		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 = CSTR ("exp");

		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 = CSTR ("exp");

		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 = CSTR ("y0");

		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("y0: DOMAIN error\n", 17);

		      }

		  __set_errno (EDOM);

		}

		break;

	    case 9:

	    case 109:

	    case 209:

		/* y0(x<0) = NaN */

		exc.type = DOMAIN;

		exc.name = CSTR ("y0");

		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("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 = CSTR ("y1");

		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("y1: DOMAIN error\n", 17);

		      }

		  __set_errno (EDOM);

		}

		break;

	    case 11:

	    case 111:

	    case 211:

		/* y1(x<0) = NaN */

		exc.type = DOMAIN;

		exc.name = CSTR ("y1");

		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("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 = CSTR ("yn");

		if (_LIB_VERSION == _SVID_)

		  exc.retval = -HUGE;

		else

		  exc.retval = ((x < 0 && ((int) x & 1) != 0)

				? HUGE_VAL

				: -HUGE_VAL);

		if (_LIB_VERSION == _POSIX_)

		  __set_errno (ERANGE);

		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 = CSTR ("yn");

		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("yn: DOMAIN error\n", 17);

		      }

		  __set_errno (EDOM);

		}

		break;

	    case 14:

	    case 114:

	    case 214:

		/* lgamma(finite) overflow */

		exc.type = OVERFLOW;

		exc.name = CSTR ("lgamma");

		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 = CSTR ("lgamma");

		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 = CSTR ("log");

		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 = CSTR ("log");

		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 = CSTR ("log10");

		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 = CSTR ("log10");

		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 21:

	    case 121:

	    case 221:

		/* pow(x,y) overflow */

		exc.type = OVERFLOW;

		exc.name = CSTR ("pow");

		if (_LIB_VERSION == _SVID_) {

		  exc.retval = HUGE;

		  y *= 0.5;

		  if(x

		} else {

		  exc.retval = HUGE_VAL;

		  y *= 0.5;

		  if(x

		}

		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 = CSTR ("pow");

		exc.retval =  zero;

		y *= 0.5;

		if (x < zero && __rint (y) != y)

		  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 = CSTR ("pow");

		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 = CSTR ("pow");

		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 = CSTR ("pow");

		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 = CSTR ("sinh");

		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 = CSTR ("sqrt");

		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 = CSTR ("fmod");

		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 = CSTR ("remainder");

		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 = CSTR ("acosh");

		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 = CSTR ("atanh");

		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 = CSTR ("atanh");

		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 = CSTR ("scalb");

		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 = CSTR ("scalb");

		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 = CSTR ("j0");

		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 = CSTR ("y0");

		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 = CSTR ("j1");

		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 = CSTR ("y1");

		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 = CSTR ("jn");

		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 = CSTR ("yn");

		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 = CSTR ("tgamma");

		exc.retval = __copysign (HUGE_VAL, x);

		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 = CSTR ("tgamma");

		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 44:

	    case 144:

	    case 244:

		/* exp(finite) overflow */

		exc.type = OVERFLOW;

		exc.name = CSTR ("exp2");

		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 = CSTR ("exp2");

		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 = CSTR ("exp10");

		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);

		}