986
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/* @(#)k_standard.c 1.3 95/01/18 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunSoft, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*
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*/
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#include "fdlibm.h"
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#include <errno.h>
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#ifndef _USE_WRITE
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#include <stdio.h> /* fputs(), stderr */
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#define WRITE2(u,v) fputs(u, stderr)
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#else /* !defined(_USE_WRITE) */
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#include <unistd.h> /* write */
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#define WRITE2(u,v) write(2, u, v)
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#undef fflush
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#endif /* !defined(_USE_WRITE) */
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static double zero = 0.0; /* used as const */
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/*
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* Standard conformance (non-IEEE) on exception cases.
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* Mapping:
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* 1 -- acos(|x|>1)
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* 2 -- asin(|x|>1)
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* 3 -- atan2(+-0,+-0)
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* 4 -- hypot overflow
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* 5 -- cosh overflow
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* 6 -- exp overflow
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* 7 -- exp underflow
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* 8 -- y0(0)
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* 9 -- y0(-ve)
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* 10-- y1(0)
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* 11-- y1(-ve)
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* 12-- yn(0)
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* 13-- yn(-ve)
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* 14-- lgamma(finite) overflow
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* 15-- lgamma(-integer)
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* 16-- log(0)
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* 17-- log(x<0)
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* 18-- log10(0)
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* 19-- log10(x<0)
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* 20-- pow(0.0,0.0)
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* 21-- pow(x,y) overflow
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* 22-- pow(x,y) underflow
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* 23-- pow(0,negative)
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* 24-- pow(neg,non-integral)
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* 25-- sinh(finite) overflow
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* 26-- sqrt(negative)
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* 27-- fmod(x,0)
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* 28-- remainder(x,0)
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* 29-- acosh(x<1)
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* 30-- atanh(|x|>1)
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* 31-- atanh(|x|=1)
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* 32-- scalb overflow
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* 33-- scalb underflow
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* 34-- j0(|x|>X_TLOSS)
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* 35-- y0(x>X_TLOSS)
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* 36-- j1(|x|>X_TLOSS)
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* 37-- y1(x>X_TLOSS)
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* 38-- jn(|x|>X_TLOSS, n)
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* 39-- yn(x>X_TLOSS, n)
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* 40-- gamma(finite) overflow
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* 41-- gamma(-integer)
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* 42-- pow(NaN,0.0)
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*/
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#ifdef __STDC__
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double __kernel_standard(double x, double y, int type)
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#else
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double __kernel_standard(x,y,type)
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double x,y; int type;
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#endif
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{
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struct exception exc;
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#ifndef HUGE_VAL /* this is the only routine that uses HUGE_VAL */
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#define HUGE_VAL inf
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double inf = 0.0;
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__HI(inf) = 0x7ff00000; /* set inf to infinite */
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#endif
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#ifdef _USE_WRITE
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(void) fflush(stdout);
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#endif
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exc.arg1 = x;
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exc.arg2 = y;
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switch(type) {
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case 1:
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/* acos(|x|>1) */
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exc.type = DOMAIN;
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exc.name = "acos";
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exc.retval = zero;
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if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if(_LIB_VERSION == _SVID_) {
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(void) WRITE2("acos: DOMAIN error\n", 19);
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}
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errno = EDOM;
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}
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break;
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case 2:
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/* asin(|x|>1) */
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exc.type = DOMAIN;
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exc.name = "asin";
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exc.retval = zero;
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if(_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if(_LIB_VERSION == _SVID_) {
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(void) WRITE2("asin: DOMAIN error\n", 19);
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}
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errno = EDOM;
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}
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break;
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case 3:
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/* atan2(+-0,+-0) */
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exc.arg1 = y;
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exc.arg2 = x;
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exc.type = DOMAIN;
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exc.name = "atan2";
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exc.retval = zero;
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if(_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if(_LIB_VERSION == _SVID_) {
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(void) WRITE2("atan2: DOMAIN error\n", 20);
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}
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errno = EDOM;
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}
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break;
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case 4:
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/* hypot(finite,finite) overflow */
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exc.type = OVERFLOW;
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exc.name = "hypot";
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if (_LIB_VERSION == _SVID_)
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exc.retval = HUGE;
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else
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exc.retval = HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = ERANGE;
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else if (!matherr(&exc)) {
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errno = ERANGE;
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}
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break;
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case 5:
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/* cosh(finite) overflow */
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exc.type = OVERFLOW;
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exc.name = "cosh";
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if (_LIB_VERSION == _SVID_)
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exc.retval = HUGE;
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else
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exc.retval = HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = ERANGE;
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else if (!matherr(&exc)) {
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errno = ERANGE;
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}
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break;
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case 6:
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/* exp(finite) overflow */
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exc.type = OVERFLOW;
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exc.name = "exp";
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if (_LIB_VERSION == _SVID_)
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exc.retval = HUGE;
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else
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exc.retval = HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = ERANGE;
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else if (!matherr(&exc)) {
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errno = ERANGE;
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}
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break;
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case 7:
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/* exp(finite) underflow */
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exc.type = UNDERFLOW;
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exc.name = "exp";
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exc.retval = zero;
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if (_LIB_VERSION == _POSIX_)
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errno = ERANGE;
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else if (!matherr(&exc)) {
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errno = ERANGE;
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}
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break;
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case 8:
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/* y0(0) = -inf */
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exc.type = DOMAIN; /* should be SING for IEEE */
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exc.name = "y0";
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if (_LIB_VERSION == _SVID_)
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exc.retval = -HUGE;
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else
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exc.retval = -HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("y0: DOMAIN error\n", 17);
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}
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errno = EDOM;
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}
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break;
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case 9:
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/* y0(x<0) = NaN */
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exc.type = DOMAIN;
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exc.name = "y0";
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if (_LIB_VERSION == _SVID_)
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exc.retval = -HUGE;
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else
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exc.retval = -HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("y0: DOMAIN error\n", 17);
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}
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errno = EDOM;
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}
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break;
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case 10:
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/* y1(0) = -inf */
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exc.type = DOMAIN; /* should be SING for IEEE */
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exc.name = "y1";
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if (_LIB_VERSION == _SVID_)
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exc.retval = -HUGE;
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else
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exc.retval = -HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("y1: DOMAIN error\n", 17);
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}
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errno = EDOM;
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}
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break;
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case 11:
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/* y1(x<0) = NaN */
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exc.type = DOMAIN;
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exc.name = "y1";
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if (_LIB_VERSION == _SVID_)
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exc.retval = -HUGE;
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else
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exc.retval = -HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("y1: DOMAIN error\n", 17);
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}
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errno = EDOM;
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}
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break;
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case 12:
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/* yn(n,0) = -inf */
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exc.type = DOMAIN; /* should be SING for IEEE */
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exc.name = "yn";
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if (_LIB_VERSION == _SVID_)
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exc.retval = -HUGE;
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else
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exc.retval = -HUGE_VAL;
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if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("yn: DOMAIN error\n", 17);
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}
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errno = EDOM;
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}
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break;
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case 13:
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/* yn(x<0) = NaN */
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exc.type = DOMAIN;
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exc.name = "yn";
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if (_LIB_VERSION == _SVID_)
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exc.retval = -HUGE;
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else
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exc.retval = -HUGE_VAL;
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288 |
if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("yn: DOMAIN error\n", 17);
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}
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errno = EDOM;
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}
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break;
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case 14:
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/* lgamma(finite) overflow */
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exc.type = OVERFLOW;
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exc.name = "lgamma";
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if (_LIB_VERSION == _SVID_)
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exc.retval = HUGE;
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else
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exc.retval = HUGE_VAL;
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305 |
if (_LIB_VERSION == _POSIX_)
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errno = ERANGE;
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else if (!matherr(&exc)) {
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errno = ERANGE;
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}
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break;
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311 |
case 15:
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312 |
/* lgamma(-integer) or lgamma(0) */
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exc.type = SING;
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exc.name = "lgamma";
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if (_LIB_VERSION == _SVID_)
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exc.retval = HUGE;
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else
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318 |
exc.retval = HUGE_VAL;
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319 |
if (_LIB_VERSION == _POSIX_)
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errno = EDOM;
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else if (!matherr(&exc)) {
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322 |
if (_LIB_VERSION == _SVID_) {
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(void) WRITE2("lgamma: SING error\n", 19);
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324 |
}
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errno = EDOM;
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326 |
}
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break;
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328 |
case 16:
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329 |
/* log(0) */
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330 |
exc.type = SING;
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exc.name = "log";
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332 |
if (_LIB_VERSION == _SVID_)
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333 |
exc.retval = -HUGE;
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334 |
else
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335 |
exc.retval = -HUGE_VAL;
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336 |
if (_LIB_VERSION == _POSIX_)
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337 |
errno = ERANGE;
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338 |
else if (!matherr(&exc)) {
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339 |
if (_LIB_VERSION == _SVID_) {
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340 |
(void) WRITE2("log: SING error\n", 16);
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341 |
}
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342 |
errno = EDOM;
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343 |
}
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344 |
break;
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345 |
case 17:
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346 |
/* log(x<0) */
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347 |
exc.type = DOMAIN;
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348 |
exc.name = "log";
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349 |
if (_LIB_VERSION == _SVID_)
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350 |
exc.retval = -HUGE;
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351 |
else
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352 |
exc.retval = -HUGE_VAL;
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353 |
if (_LIB_VERSION == _POSIX_)
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354 |
errno = EDOM;
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355 |
else if (!matherr(&exc)) {
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356 |
if (_LIB_VERSION == _SVID_) {
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357 |
(void) WRITE2("log: DOMAIN error\n", 18);
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358 |
}
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359 |
errno = EDOM;
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360 |
}
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361 |
break;
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362 |
case 18:
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363 |
/* log10(0) */
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364 |
exc.type = SING;
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365 |
exc.name = "log10";
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366 |
if (_LIB_VERSION == _SVID_)
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367 |
exc.retval = -HUGE;
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368 |
else
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369 |
exc.retval = -HUGE_VAL;
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|
370 |
if (_LIB_VERSION == _POSIX_)
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|
371 |
errno = ERANGE;
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|
372 |
else if (!matherr(&exc)) {
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|
373 |
if (_LIB_VERSION == _SVID_) {
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374 |
(void) WRITE2("log10: SING error\n", 18);
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|
375 |
}
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|
376 |
errno = EDOM;
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|
377 |
}
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|
378 |
break;
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|
379 |
case 19:
|
|
380 |
/* log10(x<0) */
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|
381 |
exc.type = DOMAIN;
|
|
382 |
exc.name = "log10";
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|
383 |
if (_LIB_VERSION == _SVID_)
|
|
384 |
exc.retval = -HUGE;
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|
385 |
else
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|
386 |
exc.retval = -HUGE_VAL;
|
|
387 |
if (_LIB_VERSION == _POSIX_)
|
|
388 |
errno = EDOM;
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|
389 |
else if (!matherr(&exc)) {
|
|
390 |
if (_LIB_VERSION == _SVID_) {
|
|
391 |
(void) WRITE2("log10: DOMAIN error\n", 20);
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|
392 |
}
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|
393 |
errno = EDOM;
|
|
394 |
}
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|
395 |
break;
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|
396 |
case 20:
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|
397 |
/* pow(0.0,0.0) */
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|
398 |
/* error only if _LIB_VERSION == _SVID_ */
|
|
399 |
exc.type = DOMAIN;
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|
400 |
exc.name = "pow";
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|
401 |
exc.retval = zero;
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|
402 |
if (_LIB_VERSION != _SVID_) exc.retval = 1.0;
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|
403 |
else if (!matherr(&exc)) {
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|
404 |
(void) WRITE2("pow(0,0): DOMAIN error\n", 23);
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|
405 |
errno = EDOM;
|
|
406 |
}
|
|
407 |
break;
|
|
408 |
case 21:
|
|
409 |
/* pow(x,y) overflow */
|
|
410 |
exc.type = OVERFLOW;
|
|
411 |
exc.name = "pow";
|
|
412 |
if (_LIB_VERSION == _SVID_) {
|
|
413 |
exc.retval = HUGE;
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|
414 |
y *= 0.5;
|
|
415 |
if(x<zero&&rint(y)!=y) exc.retval = -HUGE;
|
|
416 |
} else {
|
|
417 |
exc.retval = HUGE_VAL;
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|
418 |
y *= 0.5;
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|
419 |
if(x<zero&&rint(y)!=y) exc.retval = -HUGE_VAL;
|
|
420 |
}
|
|
421 |
if (_LIB_VERSION == _POSIX_)
|
|
422 |
errno = ERANGE;
|
|
423 |
else if (!matherr(&exc)) {
|
|
424 |
errno = ERANGE;
|
|
425 |
}
|
|
426 |
break;
|
|
427 |
case 22:
|
|
428 |
/* pow(x,y) underflow */
|
|
429 |
exc.type = UNDERFLOW;
|
|
430 |
exc.name = "pow";
|
|
431 |
exc.retval = zero;
|
|
432 |
if (_LIB_VERSION == _POSIX_)
|
|
433 |
errno = ERANGE;
|
|
434 |
else if (!matherr(&exc)) {
|
|
435 |
errno = ERANGE;
|
|
436 |
}
|
|
437 |
break;
|
|
438 |
case 23:
|
|
439 |
/* 0**neg */
|
|
440 |
exc.type = DOMAIN;
|
|
441 |
exc.name = "pow";
|
|
442 |
if (_LIB_VERSION == _SVID_)
|
|
443 |
exc.retval = zero;
|
|
444 |
else
|
|
445 |
exc.retval = -HUGE_VAL;
|
|
446 |
if (_LIB_VERSION == _POSIX_)
|
|
447 |
errno = EDOM;
|
|
448 |
else if (!matherr(&exc)) {
|
|
449 |
if (_LIB_VERSION == _SVID_) {
|
|
450 |
(void) WRITE2("pow(0,neg): DOMAIN error\n", 25);
|
|
451 |
}
|
|
452 |
errno = EDOM;
|
|
453 |
}
|
|
454 |
break;
|
|
455 |
case 24:
|
|
456 |
/* neg**non-integral */
|
|
457 |
exc.type = DOMAIN;
|
|
458 |
exc.name = "pow";
|
|
459 |
if (_LIB_VERSION == _SVID_)
|
|
460 |
exc.retval = zero;
|
|
461 |
else
|
|
462 |
exc.retval = zero/zero; /* X/Open allow NaN */
|
|
463 |
if (_LIB_VERSION == _POSIX_)
|
|
464 |
errno = EDOM;
|
|
465 |
else if (!matherr(&exc)) {
|
|
466 |
if (_LIB_VERSION == _SVID_) {
|
|
467 |
(void) WRITE2("neg**non-integral: DOMAIN error\n", 32);
|
|
468 |
}
|
|
469 |
errno = EDOM;
|
|
470 |
}
|
|
471 |
break;
|
|
472 |
case 25:
|
|
473 |
/* sinh(finite) overflow */
|
|
474 |
exc.type = OVERFLOW;
|
|
475 |
exc.name = "sinh";
|
|
476 |
if (_LIB_VERSION == _SVID_)
|
|
477 |
exc.retval = ( (x>zero) ? HUGE : -HUGE);
|
|
478 |
else
|
|
479 |
exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL);
|
|
480 |
if (_LIB_VERSION == _POSIX_)
|
|
481 |
errno = ERANGE;
|
|
482 |
else if (!matherr(&exc)) {
|
|
483 |
errno = ERANGE;
|
|
484 |
}
|
|
485 |
break;
|
|
486 |
case 26:
|
|
487 |
/* sqrt(x<0) */
|
|
488 |
exc.type = DOMAIN;
|
|
489 |
exc.name = "sqrt";
|
|
490 |
if (_LIB_VERSION == _SVID_)
|
|
491 |
exc.retval = zero;
|
|
492 |
else
|
|
493 |
exc.retval = zero/zero;
|
|
494 |
if (_LIB_VERSION == _POSIX_)
|
|
495 |
errno = EDOM;
|
|
496 |
else if (!matherr(&exc)) {
|
|
497 |
if (_LIB_VERSION == _SVID_) {
|
|
498 |
(void) WRITE2("sqrt: DOMAIN error\n", 19);
|
|
499 |
}
|
|
500 |
errno = EDOM;
|
|
501 |
}
|
|
502 |
break;
|
|
503 |
case 27:
|
|
504 |
/* fmod(x,0) */
|
|
505 |
exc.type = DOMAIN;
|
|
506 |
exc.name = "fmod";
|
|
507 |
if (_LIB_VERSION == _SVID_)
|
|
508 |
exc.retval = x;
|
|
509 |
else
|
|
510 |
exc.retval = zero/zero;
|
|
511 |
if (_LIB_VERSION == _POSIX_)
|
|
512 |
errno = EDOM;
|
|
513 |
else if (!matherr(&exc)) {
|
|
514 |
if (_LIB_VERSION == _SVID_) {
|
|
515 |
(void) WRITE2("fmod: DOMAIN error\n", 20);
|
|
516 |
}
|
|
517 |
errno = EDOM;
|
|
518 |
}
|
|
519 |
break;
|
|
520 |
case 28:
|
|
521 |
/* remainder(x,0) */
|
|
522 |
exc.type = DOMAIN;
|
|
523 |
exc.name = "remainder";
|
|
524 |
exc.retval = zero/zero;
|
|
525 |
if (_LIB_VERSION == _POSIX_)
|
|
526 |
errno = EDOM;
|
|
527 |
else if (!matherr(&exc)) {
|
|
528 |
if (_LIB_VERSION == _SVID_) {
|
|
529 |
(void) WRITE2("remainder: DOMAIN error\n", 24);
|
|
530 |
}
|
|
531 |
errno = EDOM;
|
|
532 |
}
|
|
533 |
break;
|
|
534 |
case 29:
|
|
535 |
/* acosh(x<1) */
|
|
536 |
exc.type = DOMAIN;
|
|
537 |
exc.name = "acosh";
|
|
538 |
exc.retval = zero/zero;
|
|
539 |
if (_LIB_VERSION == _POSIX_)
|
|
540 |
errno = EDOM;
|
|
541 |
else if (!matherr(&exc)) {
|
|
542 |
if (_LIB_VERSION == _SVID_) {
|
|
543 |
(void) WRITE2("acosh: DOMAIN error\n", 20);
|
|
544 |
}
|
|
545 |
errno = EDOM;
|
|
546 |
}
|
|
547 |
break;
|
|
548 |
case 30:
|
|
549 |
/* atanh(|x|>1) */
|
|
550 |
exc.type = DOMAIN;
|
|
551 |
exc.name = "atanh";
|
|
552 |
exc.retval = zero/zero;
|
|
553 |
if (_LIB_VERSION == _POSIX_)
|
|
554 |
errno = EDOM;
|
|
555 |
else if (!matherr(&exc)) {
|
|
556 |
if (_LIB_VERSION == _SVID_) {
|
|
557 |
(void) WRITE2("atanh: DOMAIN error\n", 20);
|
|
558 |
}
|
|
559 |
errno = EDOM;
|
|
560 |
}
|
|
561 |
break;
|
|
562 |
case 31:
|
|
563 |
/* atanh(|x|=1) */
|
|
564 |
exc.type = SING;
|
|
565 |
exc.name = "atanh";
|
|
566 |
exc.retval = x/zero; /* sign(x)*inf */
|
|
567 |
if (_LIB_VERSION == _POSIX_)
|
|
568 |
errno = EDOM;
|
|
569 |
else if (!matherr(&exc)) {
|
|
570 |
if (_LIB_VERSION == _SVID_) {
|
|
571 |
(void) WRITE2("atanh: SING error\n", 18);
|
|
572 |
}
|
|
573 |
errno = EDOM;
|
|
574 |
}
|
|
575 |
break;
|
|
576 |
case 32:
|
|
577 |
/* scalb overflow; SVID also returns +-HUGE_VAL */
|
|
578 |
exc.type = OVERFLOW;
|
|
579 |
exc.name = "scalb";
|
|
580 |
exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL;
|
|
581 |
if (_LIB_VERSION == _POSIX_)
|
|
582 |
errno = ERANGE;
|
|
583 |
else if (!matherr(&exc)) {
|
|
584 |
errno = ERANGE;
|
|
585 |
}
|
|
586 |
break;
|
|
587 |
case 33:
|
|
588 |
/* scalb underflow */
|
|
589 |
exc.type = UNDERFLOW;
|
|
590 |
exc.name = "scalb";
|
|
591 |
exc.retval = copysign(zero,x);
|
|
592 |
if (_LIB_VERSION == _POSIX_)
|
|
593 |
errno = ERANGE;
|
|
594 |
else if (!matherr(&exc)) {
|
|
595 |
errno = ERANGE;
|
|
596 |
}
|
|
597 |
break;
|
|
598 |
case 34:
|
|
599 |
/* j0(|x|>X_TLOSS) */
|
|
600 |
exc.type = TLOSS;
|
|
601 |
exc.name = "j0";
|
|
602 |
exc.retval = zero;
|
|
603 |
if (_LIB_VERSION == _POSIX_)
|
|
604 |
errno = ERANGE;
|
|
605 |
else if (!matherr(&exc)) {
|
|
606 |
if (_LIB_VERSION == _SVID_) {
|
|
607 |
(void) WRITE2(exc.name, 2);
|
|
608 |
(void) WRITE2(": TLOSS error\n", 14);
|
|
609 |
}
|
|
610 |
errno = ERANGE;
|
|
611 |
}
|
|
612 |
break;
|
|
613 |
case 35:
|
|
614 |
/* y0(x>X_TLOSS) */
|
|
615 |
exc.type = TLOSS;
|
|
616 |
exc.name = "y0";
|
|
617 |
exc.retval = zero;
|
|
618 |
if (_LIB_VERSION == _POSIX_)
|
|
619 |
errno = ERANGE;
|
|
620 |
else if (!matherr(&exc)) {
|
|
621 |
if (_LIB_VERSION == _SVID_) {
|
|
622 |
(void) WRITE2(exc.name, 2);
|
|
623 |
(void) WRITE2(": TLOSS error\n", 14);
|
|
624 |
}
|
|
625 |
errno = ERANGE;
|
|
626 |
}
|
|
627 |
break;
|
|
628 |
case 36:
|
|
629 |
/* j1(|x|>X_TLOSS) */
|
|
630 |
exc.type = TLOSS;
|
|
631 |
exc.name = "j1";
|
|
632 |
exc.retval = zero;
|
|
633 |
if (_LIB_VERSION == _POSIX_)
|
|
634 |
errno = ERANGE;
|
|
635 |
else if (!matherr(&exc)) {
|
|
636 |
if (_LIB_VERSION == _SVID_) {
|
|
637 |
(void) WRITE2(exc.name, 2);
|
|
638 |
(void) WRITE2(": TLOSS error\n", 14);
|
|
639 |
}
|
|
640 |
errno = ERANGE;
|
|
641 |
}
|
|
642 |
break;
|
|
643 |
case 37:
|
|
644 |
/* y1(x>X_TLOSS) */
|
|
645 |
exc.type = TLOSS;
|
|
646 |
exc.name = "y1";
|
|
647 |
exc.retval = zero;
|
|
648 |
if (_LIB_VERSION == _POSIX_)
|
|
649 |
errno = ERANGE;
|
|
650 |
else if (!matherr(&exc)) {
|
|
651 |
if (_LIB_VERSION == _SVID_) {
|
|
652 |
(void) WRITE2(exc.name, 2);
|
|
653 |
(void) WRITE2(": TLOSS error\n", 14);
|
|
654 |
}
|
|
655 |
errno = ERANGE;
|
|
656 |
}
|
|
657 |
break;
|
|
658 |
case 38:
|
|
659 |
/* jn(|x|>X_TLOSS) */
|
|
660 |
exc.type = TLOSS;
|
|
661 |
exc.name = "jn";
|
|
662 |
exc.retval = zero;
|
|
663 |
if (_LIB_VERSION == _POSIX_)
|
|
664 |
errno = ERANGE;
|
|
665 |
else if (!matherr(&exc)) {
|
|
666 |
if (_LIB_VERSION == _SVID_) {
|
|
667 |
(void) WRITE2(exc.name, 2);
|
|
668 |
(void) WRITE2(": TLOSS error\n", 14);
|
|
669 |
}
|
|
670 |
errno = ERANGE;
|
|
671 |
}
|
|
672 |
break;
|
|
673 |
case 39:
|
|
674 |
/* yn(x>X_TLOSS) */
|
|
675 |
exc.type = TLOSS;
|
|
676 |
exc.name = "yn";
|
|
677 |
exc.retval = zero;
|
|
678 |
if (_LIB_VERSION == _POSIX_)
|
|
679 |
errno = ERANGE;
|
|
680 |
else if (!matherr(&exc)) {
|
|
681 |
if (_LIB_VERSION == _SVID_) {
|
|
682 |
(void) WRITE2(exc.name, 2);
|
|
683 |
(void) WRITE2(": TLOSS error\n", 14);
|
|
684 |
}
|
|
685 |
errno = ERANGE;
|
|
686 |
}
|
|
687 |
break;
|
|
688 |
case 40:
|
|
689 |
/* gamma(finite) overflow */
|
|
690 |
exc.type = OVERFLOW;
|
|
691 |
exc.name = "gamma";
|
|
692 |
if (_LIB_VERSION == _SVID_)
|
|
693 |
exc.retval = HUGE;
|
|
694 |
else
|
|
695 |
exc.retval = HUGE_VAL;
|
|
696 |
if (_LIB_VERSION == _POSIX_)
|
|
697 |
errno = ERANGE;
|
|
698 |
else if (!matherr(&exc)) {
|
|
699 |
errno = ERANGE;
|
|
700 |
}
|
|
701 |
break;
|
|
702 |
case 41:
|
|
703 |
/* gamma(-integer) or gamma(0) */
|
|
704 |
exc.type = SING;
|
|
705 |
exc.name = "gamma";
|
|
706 |
if (_LIB_VERSION == _SVID_)
|
|
707 |
exc.retval = HUGE;
|
|
708 |
else
|
|
709 |
exc.retval = HUGE_VAL;
|
|
710 |
if (_LIB_VERSION == _POSIX_)
|
|
711 |
errno = EDOM;
|
|
712 |
else if (!matherr(&exc)) {
|
|
713 |
if (_LIB_VERSION == _SVID_) {
|
|
714 |
(void) WRITE2("gamma: SING error\n", 18);
|
|
715 |
}
|
|
716 |
errno = EDOM;
|
|
717 |
}
|
|
718 |
break;
|
|
719 |
case 42:
|
|
720 |
/* pow(NaN,0.0) */
|
|
721 |
/* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */
|
|
722 |
exc.type = DOMAIN;
|
|
723 |
exc.name = "pow";
|
|
724 |
exc.retval = x;
|
|
725 |
if (_LIB_VERSION == _IEEE_ ||
|
|
726 |
_LIB_VERSION == _POSIX_) exc.retval = 1.0;
|
|
727 |
else if (!matherr(&exc)) {
|
|
728 |
errno = EDOM;
|
|
729 |
}
|
|
730 |
break;
|
|
731 |
}
|
|
732 |
return exc.retval;
|
|
733 |
}
|