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[/] [or1k/] [trunk/] [linux/] [uClibc/] [libm/] [k_standard.c] - Blame information for rev 1771

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/* @(#)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>
 
#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) */
 
#ifdef __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-- gamma(finite) overflow
 *      41-- gamma(-integer)
 *      42-- pow(NaN,0.0)
 */
 
 
#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:
                /* acos(|x|>1) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "acos" : "acosf";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if(_LIB_VERSION == _SVID_) {
                    (void) WRITE2("acos: DOMAIN error\n", 19);
                  }
                  errno = EDOM;
                }
                break;
            case 2:
            case 102:
                /* asin(|x|>1) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "asin" : "asinf";
                exc.retval = zero;
                if(_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if(_LIB_VERSION == _SVID_) {
                        (void) WRITE2("asin: DOMAIN error\n", 19);
                  }
                  errno = EDOM;
                }
                break;
            case 3:
            case 103:
                /* atan2(+-0,+-0) */
                exc.arg1 = y;
                exc.arg2 = x;
                exc.type = DOMAIN;
                exc.name = type < 100 ? "atan2" : "atan2f";
                exc.retval = zero;
                if(_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if(_LIB_VERSION == _SVID_) {
                        (void) WRITE2("atan2: DOMAIN error\n", 20);
                      }
                  errno = EDOM;
                }
                break;
            case 4:
            case 104:
                /* hypot(finite,finite) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "hypot" : "hypotf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 5:
            case 105:
                /* cosh(finite) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "cosh" : "coshf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 6:
            case 106:
                /* exp(finite) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "exp" : "expf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 7:
            case 107:
                /* exp(finite) underflow */
                exc.type = UNDERFLOW;
                exc.name = type < 100 ? "exp" : "expf";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 8:
            case 108:
                /* y0(0) = -inf */
                exc.type = DOMAIN;      /* should be SING for IEEE */
                exc.name = type < 100 ? "y0" : "y0f";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("y0: DOMAIN error\n", 17);
                      }
                  errno = EDOM;
                }
                break;
            case 9:
            case 109:
                /* y0(x<0) = NaN */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "y0" : "y0f";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("y0: DOMAIN error\n", 17);
                      }
                  errno = EDOM;
                }
                break;
            case 10:
            case 110:
                /* y1(0) = -inf */
                exc.type = DOMAIN;      /* should be SING for IEEE */
                exc.name = type < 100 ? "y1" : "y1f";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("y1: DOMAIN error\n", 17);
                      }
                  errno = EDOM;
                }
                break;
            case 11:
            case 111:
                /* y1(x<0) = NaN */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "y1" : "y1f";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("y1: DOMAIN error\n", 17);
                      }
                  errno = EDOM;
                }
                break;
            case 12:
            case 112:
                /* yn(n,0) = -inf */
                exc.type = DOMAIN;      /* should be SING for IEEE */
                exc.name = type < 100 ? "yn" : "ynf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("yn: DOMAIN error\n", 17);
                      }
                  errno = EDOM;
                }
                break;
            case 13:
            case 113:
                /* yn(x<0) = NaN */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "yn" : "ynf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("yn: DOMAIN error\n", 17);
                      }
                  errno = EDOM;
                }
                break;
            case 14:
            case 114:
                /* lgamma(finite) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "lgamma" : "lgammaf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 15:
            case 115:
                /* lgamma(-integer) or lgamma(0) */
                exc.type = SING;
                exc.name = type < 100 ? "lgamma" : "lgammaf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("lgamma: SING error\n", 19);
                      }
                  errno = EDOM;
                }
                break;
            case 16:
            case 116:
                /* log(0) */
                exc.type = SING;
                exc.name = type < 100 ? "log" : "logf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("log: SING error\n", 16);
                      }
                  errno = EDOM;
                }
                break;
            case 17:
            case 117:
                /* log(x<0) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "log" : "logf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("log: DOMAIN error\n", 18);
                      }
                  errno = EDOM;
                }
                break;
            case 18:
            case 118:
                /* log10(0) */
                exc.type = SING;
                exc.name = type < 100 ? "log10" : "log10f";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("log10: SING error\n", 18);
                      }
                  errno = EDOM;
                }
                break;
            case 19:
            case 119:
                /* log10(x<0) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "log10" : "log10f";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = -HUGE;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("log10: DOMAIN error\n", 20);
                      }
                  errno = EDOM;
                }
                break;
            case 20:
            case 120:
                /* pow(0.0,0.0) */
                /* error only if _LIB_VERSION == _SVID_ */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "pow" : "powf";
                exc.retval = zero;
                if (_LIB_VERSION != _SVID_) exc.retval = 1.0;
                else if (!matherr(&exc)) {
                        (void) WRITE2("pow(0,0): DOMAIN error\n", 23);
                        errno = EDOM;
                }
                break;
            case 21:
            case 121:
                /* pow(x,y) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "pow" : "powf";
                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_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 22:
            case 122:
                /* pow(x,y) underflow */
                exc.type = UNDERFLOW;
                exc.name = type < 100 ? "pow" : "powf";
                exc.retval =  zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 23:
            case 123:
                /* 0**neg */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "pow" : "powf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = zero;
                else
                  exc.retval = -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("pow(0,neg): DOMAIN error\n", 25);
                      }
                  errno = EDOM;
                }
                break;
            case 24:
            case 124:
                /* neg**non-integral */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "pow" : "powf";
                if (_LIB_VERSION == _SVID_)
                    exc.retval = zero;
                else
                    exc.retval = zero/zero;     /* X/Open allow NaN */
                if (_LIB_VERSION == _POSIX_)
                   errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("neg**non-integral: DOMAIN error\n", 32);
                      }
                  errno = EDOM;
                }
                break;
            case 25:
            case 125:
                /* sinh(finite) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "sinh" : "sinhf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = ( (x>zero) ? HUGE : -HUGE);
                else
                  exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL);
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 26:
            case 126:
                /* sqrt(x<0) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "sqrt" : "sqrtf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = zero;
                else
                  exc.retval = zero/zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("sqrt: DOMAIN error\n", 19);
                      }
                  errno = EDOM;
                }
                break;
            case 27:
            case 127:
                /* fmod(x,0) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "fmod" : "fmodf";
                if (_LIB_VERSION == _SVID_)
                    exc.retval = x;
                else
                    exc.retval = zero/zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                    (void) WRITE2("fmod:  DOMAIN error\n", 20);
                  }
                  errno = EDOM;
                }
                break;
            case 28:
            case 128:
                /* remainder(x,0) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "remainder" : "remainderf";
                exc.retval = zero/zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                    (void) WRITE2("remainder: DOMAIN error\n", 24);
                  }
                  errno = EDOM;
                }
                break;
            case 29:
            case 129:
                /* acosh(x<1) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "acosh" : "acoshf";
                exc.retval = zero/zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                    (void) WRITE2("acosh: DOMAIN error\n", 20);
                  }
                  errno = EDOM;
                }
                break;
            case 30:
            case 130:
                /* atanh(|x|>1) */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "atanh" : "atanhf";
                exc.retval = zero/zero;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                    (void) WRITE2("atanh: DOMAIN error\n", 20);
                  }
                  errno = EDOM;
                }
                break;
            case 31:
            case 131:
                /* atanh(|x|=1) */
                exc.type = SING;
                exc.name = type < 100 ? "atanh" : "atanhf";
                exc.retval = x/zero;    /* sign(x)*inf */
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                    (void) WRITE2("atanh: SING error\n", 18);
                  }
                  errno = EDOM;
                }
                break;
            case 32:
            case 132:
                /* scalb overflow; SVID also returns +-HUGE_VAL */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "scalb" : "scalbf";
                exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 33:
            case 133:
                /* scalb underflow */
                exc.type = UNDERFLOW;
                exc.name = type < 100 ? "scalb" : "scalbf";
                exc.retval = copysign(zero,x);
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                        errno = ERANGE;
                }
                break;
            case 34:
            case 134:
                /* j0(|x|>X_TLOSS) */
                exc.type = TLOSS;
                exc.name = type < 100 ? "j0" : "j0f";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        if (_LIB_VERSION == _SVID_) {
                                (void) WRITE2(exc.name, 2);
                                (void) WRITE2(": TLOSS error\n", 14);
                        }
                        errno = ERANGE;
                }
                break;
            case 35:
            case 135:
                /* y0(x>X_TLOSS) */
                exc.type = TLOSS;
                exc.name = type < 100 ? "y0" : "y0f";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        if (_LIB_VERSION == _SVID_) {
                                (void) WRITE2(exc.name, 2);
                                (void) WRITE2(": TLOSS error\n", 14);
                        }
                        errno = ERANGE;
                }
                break;
            case 36:
            case 136:
                /* j1(|x|>X_TLOSS) */
                exc.type = TLOSS;
                exc.name = type < 100 ? "j1" : "j1f";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        if (_LIB_VERSION == _SVID_) {
                                (void) WRITE2(exc.name, 2);
                                (void) WRITE2(": TLOSS error\n", 14);
                        }
                        errno = ERANGE;
                }
                break;
            case 37:
            case 137:
                /* y1(x>X_TLOSS) */
                exc.type = TLOSS;
                exc.name = type < 100 ? "y1" : "y1f";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        if (_LIB_VERSION == _SVID_) {
                                (void) WRITE2(exc.name, 2);
                                (void) WRITE2(": TLOSS error\n", 14);
                        }
                        errno = ERANGE;
                }
                break;
            case 38:
            case 138:
                /* jn(|x|>X_TLOSS) */
                exc.type = TLOSS;
                exc.name = type < 100 ? "jn" : "jnf";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        if (_LIB_VERSION == _SVID_) {
                                (void) WRITE2(exc.name, 2);
                                (void) WRITE2(": TLOSS error\n", 14);
                        }
                        errno = ERANGE;
                }
                break;
            case 39:
            case 139:
                /* yn(x>X_TLOSS) */
                exc.type = TLOSS;
                exc.name = type < 100 ? "yn" : "ynf";
                exc.retval = zero;
                if (_LIB_VERSION == _POSIX_)
                        errno = ERANGE;
                else if (!matherr(&exc)) {
                        if (_LIB_VERSION == _SVID_) {
                                (void) WRITE2(exc.name, 2);
                                (void) WRITE2(": TLOSS error\n", 14);
                        }
                        errno = ERANGE;
                }
                break;
            case 40:
            case 140:
                /* gamma(finite) overflow */
                exc.type = OVERFLOW;
                exc.name = type < 100 ? "gamma" : "gammaf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = ERANGE;
                else if (!matherr(&exc)) {
                  errno = ERANGE;
                }
                break;
            case 41:
            case 141:
                /* gamma(-integer) or gamma(0) */
                exc.type = SING;
                exc.name = type < 100 ? "gamma" : "gammaf";
                if (_LIB_VERSION == _SVID_)
                  exc.retval = HUGE;
                else
                  exc.retval = HUGE_VAL;
                if (_LIB_VERSION == _POSIX_)
                  errno = EDOM;
                else if (!matherr(&exc)) {
                  if (_LIB_VERSION == _SVID_) {
                        (void) WRITE2("gamma: SING error\n", 18);
                      }
                  errno = EDOM;
                }
                break;
            case 42:
            case 142:
                /* pow(NaN,0.0) */
                /* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */
                exc.type = DOMAIN;
                exc.name = type < 100 ? "pow" : "powf";
                exc.retval = x;
                if (_LIB_VERSION == _IEEE_ ||
                    _LIB_VERSION == _POSIX_) exc.retval = 1.0;
                else if (!matherr(&exc)) {
                        errno = EDOM;
                }
                break;
        }
        return exc.retval;
}

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[/] [or1k/] [trunk/] [linux/] [uClibc/] [libm/] [k_standard.c] - Blame information for rev 1771

Line No.	Rev	Author	Line
1	1325	phoenix	`/* @(#)k_standard.c 5.1 93/09/24 */`
2			`/*`
3			`* ====================================================`
4			`* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.`
5			`*`
6			`* Developed at SunPro, a Sun Microsystems, Inc. business.`
7			`* Permission to use, copy, modify, and distribute this`
8			`* software is freely granted, provided that this notice`
9			`* is preserved.`
10			`* ====================================================`
11			`*/`
12
13			`#if defined(LIBM_SCCS) && !defined(lint)`
14			`static char rcsid[] = "$NetBSD: k_standard.c,v 1.6 1995/05/10 20:46:35 jtc Exp $";`
15			`#endif`
16
17			`#include "math.h"`
18			`#include "math_private.h"`
19			`#include <errno.h>`
20
21			`#ifndef _USE_WRITE`
22			`#include <stdio.h> /* fputs(), stderr */`
23			`#define WRITE2(u,v) fputs(u, stderr)`
24			`#else /* !defined(_USE_WRITE) */`
25			`#include <unistd.h> /* write */`
26			`#define WRITE2(u,v) write(2, u, v)`
27			`#undef fflush`
28			`#endif /* !defined(_USE_WRITE) */`
29
30			`#ifdef __STDC__`
31			`static const double zero = 0.0; /* used as const */`
32			`#else`
33			`static double zero = 0.0; /* used as const */`
34			`#endif`
35
36			`/*`
37			`* Standard conformance (non-IEEE) on exception cases.`
38			`* Mapping:`
39			`* 1 -- acos(\|x\|>1)`
40			`* 2 -- asin(\|x\|>1)`
41			`* 3 -- atan2(+-0,+-0)`
42			`* 4 -- hypot overflow`
43			`* 5 -- cosh overflow`
44			`* 6 -- exp overflow`
45			`* 7 -- exp underflow`
46			`* 8 -- y0(0)`
47			`* 9 -- y0(-ve)`
48			`* 10-- y1(0)`
49			`* 11-- y1(-ve)`
50			`* 12-- yn(0)`
51			`* 13-- yn(-ve)`
52			`* 14-- lgamma(finite) overflow`
53			`* 15-- lgamma(-integer)`
54			`* 16-- log(0)`
55			`* 17-- log(x<0)`
56			`* 18-- log10(0)`
57			`* 19-- log10(x<0)`
58			`* 20-- pow(0.0,0.0)`
59			`* 21-- pow(x,y) overflow`
60			`* 22-- pow(x,y) underflow`
61			`* 23-- pow(0,negative)`
62			`* 24-- pow(neg,non-integral)`
63			`* 25-- sinh(finite) overflow`
64			`* 26-- sqrt(negative)`
65			`* 27-- fmod(x,0)`
66			`* 28-- remainder(x,0)`
67			`* 29-- acosh(x<1)`
68			`* 30-- atanh(\|x\|>1)`
69			`* 31-- atanh(\|x\|=1)`
70			`* 32-- scalb overflow`
71			`* 33-- scalb underflow`
72			`* 34-- j0(\|x\|>X_TLOSS)`
73			`* 35-- y0(x>X_TLOSS)`
74			`* 36-- j1(\|x\|>X_TLOSS)`
75			`* 37-- y1(x>X_TLOSS)`
76			`* 38-- jn(\|x\|>X_TLOSS, n)`
77			`* 39-- yn(x>X_TLOSS, n)`
78			`* 40-- gamma(finite) overflow`
79			`* 41-- gamma(-integer)`
80			`* 42-- pow(NaN,0.0)`
81			`*/`
82
83
84			`#ifdef __STDC__`
85			`double __kernel_standard(double x, double y, int type)`
86			`#else`
87			`double __kernel_standard(x,y,type)`
88			`double x,y; int type;`
89			`#endif`
90			`{`
91			`struct exception exc;`
92			`#ifndef HUGE_VAL /* this is the only routine that uses HUGE_VAL */`
93			`#define HUGE_VAL inf`
94			`double inf = 0.0;`
95
96			`SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */`
97			`#endif`
98
99			`#ifdef _USE_WRITE`
100			`(void) fflush(stdout);`
101			`#endif`
102			`exc.arg1 = x;`
103			`exc.arg2 = y;`
104			`switch(type) {`
105			`case 1:`
106			`case 101:`
107			`/* acos(\|x\|>1) */`
108			`exc.type = DOMAIN;`
109			`exc.name = type < 100 ? "acos" : "acosf";`
110			`exc.retval = zero;`
111			`if (_LIB_VERSION == _POSIX_)`
112			`errno = EDOM;`
113			`else if (!matherr(&exc)) {`
114			`if(_LIB_VERSION == _SVID_) {`
115			`(void) WRITE2("acos: DOMAIN error\n", 19);`
116			`}`
117			`errno = EDOM;`
118			`}`
119			`break;`
120			`case 2:`
121			`case 102:`
122			`/* asin(\|x\|>1) */`
123			`exc.type = DOMAIN;`
124			`exc.name = type < 100 ? "asin" : "asinf";`
125			`exc.retval = zero;`
126			`if(_LIB_VERSION == _POSIX_)`
127			`errno = EDOM;`
128			`else if (!matherr(&exc)) {`
129			`if(_LIB_VERSION == _SVID_) {`
130			`(void) WRITE2("asin: DOMAIN error\n", 19);`
131			`}`
132			`errno = EDOM;`
133			`}`
134			`break;`
135			`case 3:`
136			`case 103:`
137			`/* atan2(+-0,+-0) */`
138			`exc.arg1 = y;`
139			`exc.arg2 = x;`
140			`exc.type = DOMAIN;`
141			`exc.name = type < 100 ? "atan2" : "atan2f";`
142			`exc.retval = zero;`
143			`if(_LIB_VERSION == _POSIX_)`
144			`errno = EDOM;`
145			`else if (!matherr(&exc)) {`
146			`if(_LIB_VERSION == _SVID_) {`
147			`(void) WRITE2("atan2: DOMAIN error\n", 20);`
148			`}`
149			`errno = EDOM;`
150			`}`
151			`break;`
152			`case 4:`
153			`case 104:`
154			`/* hypot(finite,finite) overflow */`
155			`exc.type = OVERFLOW;`
156			`exc.name = type < 100 ? "hypot" : "hypotf";`
157			`if (_LIB_VERSION == _SVID_)`
158			`exc.retval = HUGE;`
159			`else`
160			`exc.retval = HUGE_VAL;`
161			`if (_LIB_VERSION == _POSIX_)`
162			`errno = ERANGE;`
163			`else if (!matherr(&exc)) {`
164			`errno = ERANGE;`
165			`}`
166			`break;`
167			`case 5:`
168			`case 105:`
169			`/* cosh(finite) overflow */`
170			`exc.type = OVERFLOW;`
171			`exc.name = type < 100 ? "cosh" : "coshf";`
172			`if (_LIB_VERSION == _SVID_)`
173			`exc.retval = HUGE;`
174			`else`
175			`exc.retval = HUGE_VAL;`
176			`if (_LIB_VERSION == _POSIX_)`
177			`errno = ERANGE;`
178			`else if (!matherr(&exc)) {`
179			`errno = ERANGE;`
180			`}`
181			`break;`
182			`case 6:`
183			`case 106:`
184			`/* exp(finite) overflow */`
185			`exc.type = OVERFLOW;`
186			`exc.name = type < 100 ? "exp" : "expf";`
187			`if (_LIB_VERSION == _SVID_)`
188			`exc.retval = HUGE;`
189			`else`
190			`exc.retval = HUGE_VAL;`
191			`if (_LIB_VERSION == _POSIX_)`
192			`errno = ERANGE;`
193			`else if (!matherr(&exc)) {`
194			`errno = ERANGE;`
195			`}`
196			`break;`
197			`case 7:`
198			`case 107:`
199			`/* exp(finite) underflow */`
200			`exc.type = UNDERFLOW;`
201			`exc.name = type < 100 ? "exp" : "expf";`
202			`exc.retval = zero;`
203			`if (_LIB_VERSION == _POSIX_)`
204			`errno = ERANGE;`
205			`else if (!matherr(&exc)) {`
206			`errno = ERANGE;`
207			`}`
208			`break;`
209			`case 8:`
210			`case 108:`
211			`/* y0(0) = -inf */`
212			`exc.type = DOMAIN; /* should be SING for IEEE */`
213			`exc.name = type < 100 ? "y0" : "y0f";`
214			`if (_LIB_VERSION == _SVID_)`
215			`exc.retval = -HUGE;`
216			`else`
217			`exc.retval = -HUGE_VAL;`
218			`if (_LIB_VERSION == _POSIX_)`
219			`errno = EDOM;`
220			`else if (!matherr(&exc)) {`
221			`if (_LIB_VERSION == _SVID_) {`
222			`(void) WRITE2("y0: DOMAIN error\n", 17);`
223			`}`
224			`errno = EDOM;`
225			`}`
226			`break;`
227			`case 9:`
228			`case 109:`
229			`/* y0(x<0) = NaN */`
230			`exc.type = DOMAIN;`
231			`exc.name = type < 100 ? "y0" : "y0f";`
232			`if (_LIB_VERSION == _SVID_)`
233			`exc.retval = -HUGE;`
234			`else`
235			`exc.retval = -HUGE_VAL;`
236			`if (_LIB_VERSION == _POSIX_)`
237			`errno = EDOM;`
238			`else if (!matherr(&exc)) {`
239			`if (_LIB_VERSION == _SVID_) {`
240			`(void) WRITE2("y0: DOMAIN error\n", 17);`
241			`}`
242			`errno = EDOM;`
243			`}`
244			`break;`
245			`case 10:`
246			`case 110:`
247			`/* y1(0) = -inf */`
248			`exc.type = DOMAIN; /* should be SING for IEEE */`
249			`exc.name = type < 100 ? "y1" : "y1f";`
250			`if (_LIB_VERSION == _SVID_)`
251			`exc.retval = -HUGE;`
252			`else`
253			`exc.retval = -HUGE_VAL;`
254			`if (_LIB_VERSION == _POSIX_)`
255			`errno = EDOM;`
256			`else if (!matherr(&exc)) {`
257			`if (_LIB_VERSION == _SVID_) {`
258			`(void) WRITE2("y1: DOMAIN error\n", 17);`
259			`}`
260			`errno = EDOM;`
261			`}`
262			`break;`
263			`case 11:`
264			`case 111:`
265			`/* y1(x<0) = NaN */`
266			`exc.type = DOMAIN;`
267			`exc.name = type < 100 ? "y1" : "y1f";`
268			`if (_LIB_VERSION == _SVID_)`
269			`exc.retval = -HUGE;`
270			`else`
271			`exc.retval = -HUGE_VAL;`
272			`if (_LIB_VERSION == _POSIX_)`
273			`errno = EDOM;`
274			`else if (!matherr(&exc)) {`
275			`if (_LIB_VERSION == _SVID_) {`
276			`(void) WRITE2("y1: DOMAIN error\n", 17);`
277			`}`
278			`errno = EDOM;`
279			`}`
280			`break;`
281			`case 12:`
282			`case 112:`
283			`/* yn(n,0) = -inf */`
284			`exc.type = DOMAIN; /* should be SING for IEEE */`
285			`exc.name = type < 100 ? "yn" : "ynf";`
286			`if (_LIB_VERSION == _SVID_)`
287			`exc.retval = -HUGE;`
288			`else`
289			`exc.retval = -HUGE_VAL;`
290			`if (_LIB_VERSION == _POSIX_)`
291			`errno = EDOM;`
292			`else if (!matherr(&exc)) {`
293			`if (_LIB_VERSION == _SVID_) {`
294			`(void) WRITE2("yn: DOMAIN error\n", 17);`
295			`}`
296			`errno = EDOM;`
297			`}`
298			`break;`
299			`case 13:`
300			`case 113:`
301			`/* yn(x<0) = NaN */`
302			`exc.type = DOMAIN;`
303			`exc.name = type < 100 ? "yn" : "ynf";`
304			`if (_LIB_VERSION == _SVID_)`
305			`exc.retval = -HUGE;`
306			`else`
307			`exc.retval = -HUGE_VAL;`
308			`if (_LIB_VERSION == _POSIX_)`
309			`errno = EDOM;`
310			`else if (!matherr(&exc)) {`
311			`if (_LIB_VERSION == _SVID_) {`
312			`(void) WRITE2("yn: DOMAIN error\n", 17);`
313			`}`
314			`errno = EDOM;`
315			`}`
316			`break;`
317			`case 14:`
318			`case 114:`
319			`/* lgamma(finite) overflow */`
320			`exc.type = OVERFLOW;`
321			`exc.name = type < 100 ? "lgamma" : "lgammaf";`
322			`if (_LIB_VERSION == _SVID_)`
323			`exc.retval = HUGE;`
324			`else`
325			`exc.retval = HUGE_VAL;`
326			`if (_LIB_VERSION == _POSIX_)`
327			`errno = ERANGE;`
328			`else if (!matherr(&exc)) {`
329			`errno = ERANGE;`
330			`}`
331			`break;`
332			`case 15:`
333			`case 115:`
334			`/* lgamma(-integer) or lgamma(0) */`
335			`exc.type = SING;`
336			`exc.name = type < 100 ? "lgamma" : "lgammaf";`
337			`if (_LIB_VERSION == _SVID_)`
338			`exc.retval = HUGE;`
339			`else`
340			`exc.retval = HUGE_VAL;`
341			`if (_LIB_VERSION == _POSIX_)`
342			`errno = EDOM;`
343			`else if (!matherr(&exc)) {`
344			`if (_LIB_VERSION == _SVID_) {`
345			`(void) WRITE2("lgamma: SING error\n", 19);`
346			`}`
347			`errno = EDOM;`
348			`}`
349			`break;`
350			`case 16:`
351			`case 116:`
352			`/* log(0) */`
353			`exc.type = SING;`
354			`exc.name = type < 100 ? "log" : "logf";`
355			`if (_LIB_VERSION == _SVID_)`
356			`exc.retval = -HUGE;`
357			`else`
358			`exc.retval = -HUGE_VAL;`
359			`if (_LIB_VERSION == _POSIX_)`
360			`errno = ERANGE;`
361			`else if (!matherr(&exc)) {`
362			`if (_LIB_VERSION == _SVID_) {`
363			`(void) WRITE2("log: SING error\n", 16);`
364			`}`
365			`errno = EDOM;`
366			`}`
367			`break;`
368			`case 17:`
369			`case 117:`
370			`/* log(x<0) */`
371			`exc.type = DOMAIN;`
372			`exc.name = type < 100 ? "log" : "logf";`
373			`if (_LIB_VERSION == _SVID_)`
374			`exc.retval = -HUGE;`
375			`else`
376			`exc.retval = -HUGE_VAL;`
377			`if (_LIB_VERSION == _POSIX_)`
378			`errno = EDOM;`
379			`else if (!matherr(&exc)) {`
380			`if (_LIB_VERSION == _SVID_) {`
381			`(void) WRITE2("log: DOMAIN error\n", 18);`
382			`}`
383			`errno = EDOM;`
384			`}`
385			`break;`
386			`case 18:`
387			`case 118:`
388			`/* log10(0) */`
389			`exc.type = SING;`
390			`exc.name = type < 100 ? "log10" : "log10f";`
391			`if (_LIB_VERSION == _SVID_)`
392			`exc.retval = -HUGE;`
393			`else`
394			`exc.retval = -HUGE_VAL;`
395			`if (_LIB_VERSION == _POSIX_)`
396			`errno = ERANGE;`
397			`else if (!matherr(&exc)) {`
398			`if (_LIB_VERSION == _SVID_) {`
399			`(void) WRITE2("log10: SING error\n", 18);`
400			`}`
401			`errno = EDOM;`
402			`}`
403			`break;`
404			`case 19:`
405			`case 119:`
406			`/* log10(x<0) */`
407			`exc.type = DOMAIN;`
408			`exc.name = type < 100 ? "log10" : "log10f";`
409			`if (_LIB_VERSION == _SVID_)`
410			`exc.retval = -HUGE;`
411			`else`
412			`exc.retval = -HUGE_VAL;`
413			`if (_LIB_VERSION == _POSIX_)`
414			`errno = EDOM;`
415			`else if (!matherr(&exc)) {`
416			`if (_LIB_VERSION == _SVID_) {`
417			`(void) WRITE2("log10: DOMAIN error\n", 20);`
418			`}`
419			`errno = EDOM;`
420			`}`
421			`break;`
422			`case 20:`
423			`case 120:`
424			`/* pow(0.0,0.0) */`
425			`/* error only if _LIB_VERSION == _SVID_ */`
426			`exc.type = DOMAIN;`
427			`exc.name = type < 100 ? "pow" : "powf";`
428			`exc.retval = zero;`
429			`if (_LIB_VERSION != _SVID_) exc.retval = 1.0;`
430			`else if (!matherr(&exc)) {`
431			`(void) WRITE2("pow(0,0): DOMAIN error\n", 23);`
432			`errno = EDOM;`
433			`}`
434			`break;`
435			`case 21:`
436			`case 121:`
437			`/* pow(x,y) overflow */`
438			`exc.type = OVERFLOW;`
439			`exc.name = type < 100 ? "pow" : "powf";`
440			`if (_LIB_VERSION == _SVID_) {`
441			`exc.retval = HUGE;`
442			`y *= 0.5;`
443			`if(x<zero&&rint(y)!=y) exc.retval = -HUGE;`
444			`} else {`
445			`exc.retval = HUGE_VAL;`
446			`y *= 0.5;`
447			`if(x<zero&&rint(y)!=y) exc.retval = -HUGE_VAL;`
448			`}`
449			`if (_LIB_VERSION == _POSIX_)`
450			`errno = ERANGE;`
451			`else if (!matherr(&exc)) {`
452			`errno = ERANGE;`
453			`}`
454			`break;`
455			`case 22:`
456			`case 122:`
457			`/* pow(x,y) underflow */`
458			`exc.type = UNDERFLOW;`
459			`exc.name = type < 100 ? "pow" : "powf";`
460			`exc.retval = zero;`
461			`if (_LIB_VERSION == _POSIX_)`
462			`errno = ERANGE;`
463			`else if (!matherr(&exc)) {`
464			`errno = ERANGE;`
465			`}`
466			`break;`
467			`case 23:`
468			`case 123:`
469			`/* 0*neg /`
470			`exc.type = DOMAIN;`
471			`exc.name = type < 100 ? "pow" : "powf";`
472			`if (_LIB_VERSION == _SVID_)`
473			`exc.retval = zero;`
474			`else`
475			`exc.retval = -HUGE_VAL;`
476			`if (_LIB_VERSION == _POSIX_)`
477			`errno = EDOM;`
478			`else if (!matherr(&exc)) {`
479			`if (_LIB_VERSION == _SVID_) {`
480			`(void) WRITE2("pow(0,neg): DOMAIN error\n", 25);`
481			`}`
482			`errno = EDOM;`
483			`}`
484			`break;`
485			`case 24:`
486			`case 124:`
487			`/* neg*non-integral /`
488			`exc.type = DOMAIN;`
489			`exc.name = type < 100 ? "pow" : "powf";`
490			`if (_LIB_VERSION == _SVID_)`
491			`exc.retval = zero;`
492			`else`
493			`exc.retval = zero/zero; /* X/Open allow NaN */`
494			`if (_LIB_VERSION == _POSIX_)`
495			`errno = EDOM;`
496			`else if (!matherr(&exc)) {`
497			`if (_LIB_VERSION == _SVID_) {`
498			`(void) WRITE2("neg**non-integral: DOMAIN error\n", 32);`
499			`}`
500			`errno = EDOM;`
501			`}`
502			`break;`
503			`case 25:`
504			`case 125:`
505			`/* sinh(finite) overflow */`
506			`exc.type = OVERFLOW;`
507			`exc.name = type < 100 ? "sinh" : "sinhf";`
508			`if (_LIB_VERSION == _SVID_)`
509			`exc.retval = ( (x>zero) ? HUGE : -HUGE);`
510			`else`
511			`exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL);`
512			`if (_LIB_VERSION == _POSIX_)`
513			`errno = ERANGE;`
514			`else if (!matherr(&exc)) {`
515			`errno = ERANGE;`
516			`}`
517			`break;`
518			`case 26:`
519			`case 126:`
520			`/* sqrt(x<0) */`
521			`exc.type = DOMAIN;`
522			`exc.name = type < 100 ? "sqrt" : "sqrtf";`
523			`if (_LIB_VERSION == _SVID_)`
524			`exc.retval = zero;`
525			`else`
526			`exc.retval = zero/zero;`
527			`if (_LIB_VERSION == _POSIX_)`
528			`errno = EDOM;`
529			`else if (!matherr(&exc)) {`
530			`if (_LIB_VERSION == _SVID_) {`
531			`(void) WRITE2("sqrt: DOMAIN error\n", 19);`
532			`}`
533			`errno = EDOM;`
534			`}`
535			`break;`
536			`case 27:`
537			`case 127:`
538			`/* fmod(x,0) */`
539			`exc.type = DOMAIN;`
540			`exc.name = type < 100 ? "fmod" : "fmodf";`
541			`if (_LIB_VERSION == _SVID_)`
542			`exc.retval = x;`
543			`else`
544			`exc.retval = zero/zero;`
545			`if (_LIB_VERSION == _POSIX_)`
546			`errno = EDOM;`
547			`else if (!matherr(&exc)) {`
548			`if (_LIB_VERSION == _SVID_) {`
549			`(void) WRITE2("fmod: DOMAIN error\n", 20);`
550			`}`
551			`errno = EDOM;`
552			`}`
553			`break;`
554			`case 28:`
555			`case 128:`
556			`/* remainder(x,0) */`
557			`exc.type = DOMAIN;`
558			`exc.name = type < 100 ? "remainder" : "remainderf";`
559			`exc.retval = zero/zero;`
560			`if (_LIB_VERSION == _POSIX_)`
561			`errno = EDOM;`
562			`else if (!matherr(&exc)) {`
563			`if (_LIB_VERSION == _SVID_) {`
564			`(void) WRITE2("remainder: DOMAIN error\n", 24);`
565			`}`
566			`errno = EDOM;`
567			`}`
568			`break;`
569			`case 29:`
570			`case 129:`
571			`/* acosh(x<1) */`
572			`exc.type = DOMAIN;`
573			`exc.name = type < 100 ? "acosh" : "acoshf";`
574			`exc.retval = zero/zero;`
575			`if (_LIB_VERSION == _POSIX_)`
576			`errno = EDOM;`
577			`else if (!matherr(&exc)) {`
578			`if (_LIB_VERSION == _SVID_) {`
579			`(void) WRITE2("acosh: DOMAIN error\n", 20);`
580			`}`
581			`errno = EDOM;`
582			`}`
583			`break;`
584			`case 30:`
585			`case 130:`
586			`/* atanh(\|x\|>1) */`
587			`exc.type = DOMAIN;`
588			`exc.name = type < 100 ? "atanh" : "atanhf";`
589			`exc.retval = zero/zero;`
590			`if (_LIB_VERSION == _POSIX_)`
591			`errno = EDOM;`
592			`else if (!matherr(&exc)) {`
593			`if (_LIB_VERSION == _SVID_) {`
594			`(void) WRITE2("atanh: DOMAIN error\n", 20);`
595			`}`
596			`errno = EDOM;`
597			`}`
598			`break;`
599			`case 31:`
600			`case 131:`
601			`/* atanh(\|x\|=1) */`
602			`exc.type = SING;`
603			`exc.name = type < 100 ? "atanh" : "atanhf";`
604			`exc.retval = x/zero; /* sign(x)inf /`
605			`if (_LIB_VERSION == _POSIX_)`
606			`errno = EDOM;`
607			`else if (!matherr(&exc)) {`
608			`if (_LIB_VERSION == _SVID_) {`
609			`(void) WRITE2("atanh: SING error\n", 18);`
610			`}`
611			`errno = EDOM;`
612			`}`
613			`break;`
614			`case 32:`
615			`case 132:`
616			`/* scalb overflow; SVID also returns +-HUGE_VAL */`
617			`exc.type = OVERFLOW;`
618			`exc.name = type < 100 ? "scalb" : "scalbf";`
619			`exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL;`
620			`if (_LIB_VERSION == _POSIX_)`
621			`errno = ERANGE;`
622			`else if (!matherr(&exc)) {`
623			`errno = ERANGE;`
624			`}`
625			`break;`
626			`case 33:`
627			`case 133:`
628			`/* scalb underflow */`
629			`exc.type = UNDERFLOW;`
630			`exc.name = type < 100 ? "scalb" : "scalbf";`
631			`exc.retval = copysign(zero,x);`
632			`if (_LIB_VERSION == _POSIX_)`
633			`errno = ERANGE;`
634			`else if (!matherr(&exc)) {`
635			`errno = ERANGE;`
636			`}`
637			`break;`
638			`case 34:`
639			`case 134:`
640			`/* j0(\|x\|>X_TLOSS) */`
641			`exc.type = TLOSS;`
642			`exc.name = type < 100 ? "j0" : "j0f";`
643			`exc.retval = zero;`
644			`if (_LIB_VERSION == _POSIX_)`
645			`errno = ERANGE;`
646			`else if (!matherr(&exc)) {`
647			`if (_LIB_VERSION == _SVID_) {`
648			`(void) WRITE2(exc.name, 2);`
649			`(void) WRITE2(": TLOSS error\n", 14);`
650			`}`
651			`errno = ERANGE;`
652			`}`
653			`break;`
654			`case 35:`
655			`case 135:`
656			`/* y0(x>X_TLOSS) */`
657			`exc.type = TLOSS;`
658			`exc.name = type < 100 ? "y0" : "y0f";`
659			`exc.retval = zero;`
660			`if (_LIB_VERSION == _POSIX_)`
661			`errno = ERANGE;`
662			`else if (!matherr(&exc)) {`
663			`if (_LIB_VERSION == _SVID_) {`
664			`(void) WRITE2(exc.name, 2);`
665			`(void) WRITE2(": TLOSS error\n", 14);`
666			`}`
667			`errno = ERANGE;`
668			`}`
669			`break;`
670			`case 36:`
671			`case 136:`
672			`/* j1(\|x\|>X_TLOSS) */`
673			`exc.type = TLOSS;`
674			`exc.name = type < 100 ? "j1" : "j1f";`
675			`exc.retval = zero;`
676			`if (_LIB_VERSION == _POSIX_)`
677			`errno = ERANGE;`
678			`else if (!matherr(&exc)) {`
679			`if (_LIB_VERSION == _SVID_) {`
680			`(void) WRITE2(exc.name, 2);`
681			`(void) WRITE2(": TLOSS error\n", 14);`
682			`}`
683			`errno = ERANGE;`
684			`}`
685			`break;`
686			`case 37:`
687			`case 137:`
688			`/* y1(x>X_TLOSS) */`
689			`exc.type = TLOSS;`
690			`exc.name = type < 100 ? "y1" : "y1f";`
691			`exc.retval = zero;`
692			`if (_LIB_VERSION == _POSIX_)`
693			`errno = ERANGE;`
694			`else if (!matherr(&exc)) {`
695			`if (_LIB_VERSION == _SVID_) {`
696			`(void) WRITE2(exc.name, 2);`
697			`(void) WRITE2(": TLOSS error\n", 14);`
698			`}`
699			`errno = ERANGE;`
700			`}`
701			`break;`
702			`case 38:`
703			`case 138:`
704			`/* jn(\|x\|>X_TLOSS) */`
705			`exc.type = TLOSS;`
706			`exc.name = type < 100 ? "jn" : "jnf";`
707			`exc.retval = zero;`
708			`if (_LIB_VERSION == _POSIX_)`
709			`errno = ERANGE;`
710			`else if (!matherr(&exc)) {`
711			`if (_LIB_VERSION == _SVID_) {`
712			`(void) WRITE2(exc.name, 2);`
713			`(void) WRITE2(": TLOSS error\n", 14);`
714			`}`
715			`errno = ERANGE;`
716			`}`
717			`break;`
718			`case 39:`
719			`case 139:`
720			`/* yn(x>X_TLOSS) */`
721			`exc.type = TLOSS;`
722			`exc.name = type < 100 ? "yn" : "ynf";`
723			`exc.retval = zero;`
724			`if (_LIB_VERSION == _POSIX_)`
725			`errno = ERANGE;`
726			`else if (!matherr(&exc)) {`
727			`if (_LIB_VERSION == _SVID_) {`
728			`(void) WRITE2(exc.name, 2);`
729			`(void) WRITE2(": TLOSS error\n", 14);`
730			`}`
731			`errno = ERANGE;`
732			`}`
733			`break;`
734			`case 40:`
735			`case 140:`
736			`/* gamma(finite) overflow */`
737			`exc.type = OVERFLOW;`
738			`exc.name = type < 100 ? "gamma" : "gammaf";`
739			`if (_LIB_VERSION == _SVID_)`
740			`exc.retval = HUGE;`
741			`else`
742			`exc.retval = HUGE_VAL;`
743			`if (_LIB_VERSION == _POSIX_)`
744			`errno = ERANGE;`
745			`else if (!matherr(&exc)) {`
746			`errno = ERANGE;`
747			`}`
748			`break;`
749			`case 41:`
750			`case 141:`
751			`/* gamma(-integer) or gamma(0) */`
752			`exc.type = SING;`
753			`exc.name = type < 100 ? "gamma" : "gammaf";`
754			`if (_LIB_VERSION == _SVID_)`
755			`exc.retval = HUGE;`
756			`else`
757			`exc.retval = HUGE_VAL;`
758			`if (_LIB_VERSION == _POSIX_)`
759			`errno = EDOM;`
760			`else if (!matherr(&exc)) {`
761			`if (_LIB_VERSION == _SVID_) {`
762			`(void) WRITE2("gamma: SING error\n", 18);`
763			`}`
764			`errno = EDOM;`
765			`}`
766			`break;`
767			`case 42:`
768			`case 142:`
769			`/* pow(NaN,0.0) */`
770			`/* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */`
771			`exc.type = DOMAIN;`
772			`exc.name = type < 100 ? "pow" : "powf";`
773			`exc.retval = x;`
774			`if (_LIB_VERSION == _IEEE_ \|\|`
775			`_LIB_VERSION == _POSIX_) exc.retval = 1.0;`
776			`else if (!matherr(&exc)) {`
777			`errno = EDOM;`
778			`}`
779			`break;`
780			`}`
781			`return exc.retval;`
782			`}`