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[/] [or1k/] [trunk/] [newlib-1.10.0/] [newlib/] [libm/] [math/] [k_standard.c] - Blame information for rev 1780

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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.
 * ====================================================
 *
 */
 
#include "fdlibm.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_r(p)); */
#endif
        exc.arg1 = x;
        exc.arg2 = y;
        exc.err = 0;
        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;
        }
        if (exc.err != 0)
            errno = exc.err;
        return exc.retval;
}
 
 

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[/] [or1k/] [trunk/] [newlib-1.10.0/] [newlib/] [libm/] [math/] [k_standard.c] - Blame information for rev 1780

Line No.	Rev	Author	Line
1	1010	ivang
2			`/* @(#)k_standard.c 5.1 93/09/24 */`
3			`/*`
4			`* ====================================================`
5			`* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.`
6			`*`
7			`* Developed at SunPro, a Sun Microsystems, Inc. business.`
8			`* Permission to use, copy, modify, and distribute this`
9			`* software is freely granted, provided that this notice`
10			`* is preserved.`
11			`* ====================================================`
12			`*`
13			`*/`
14
15			`#include "fdlibm.h"`
16			`#include <errno.h>`
17
18			`#ifndef _USE_WRITE`
19			`#include <stdio.h> /* fputs(), stderr */`
20			`#define WRITE2(u,v) fputs(u, stderr)`
21			`#else /* !defined(_USE_WRITE) */`
22			`#include <unistd.h> /* write */`
23			`#define WRITE2(u,v) write(2, u, v)`
24			`#undef fflush`
25			`#endif /* !defined(_USE_WRITE) */`
26
27			`#ifdef __STDC__`
28			`static const double zero = 0.0; /* used as const */`
29			`#else`
30			`static double zero = 0.0; /* used as const */`
31			`#endif`
32
33			`/*`
34			`* Standard conformance (non-IEEE) on exception cases.`
35			`* Mapping:`
36			`* 1 -- acos(\|x\|>1)`
37			`* 2 -- asin(\|x\|>1)`
38			`* 3 -- atan2(+-0,+-0)`
39			`* 4 -- hypot overflow`
40			`* 5 -- cosh overflow`
41			`* 6 -- exp overflow`
42			`* 7 -- exp underflow`
43			`* 8 -- y0(0)`
44			`* 9 -- y0(-ve)`
45			`* 10-- y1(0)`
46			`* 11-- y1(-ve)`
47			`* 12-- yn(0)`
48			`* 13-- yn(-ve)`
49			`* 14-- lgamma(finite) overflow`
50			`* 15-- lgamma(-integer)`
51			`* 16-- log(0)`
52			`* 17-- log(x<0)`
53			`* 18-- log10(0)`
54			`* 19-- log10(x<0)`
55			`* 20-- pow(0.0,0.0)`
56			`* 21-- pow(x,y) overflow`
57			`* 22-- pow(x,y) underflow`
58			`* 23-- pow(0,negative)`
59			`* 24-- pow(neg,non-integral)`
60			`* 25-- sinh(finite) overflow`
61			`* 26-- sqrt(negative)`
62			`* 27-- fmod(x,0)`
63			`* 28-- remainder(x,0)`
64			`* 29-- acosh(x<1)`
65			`* 30-- atanh(\|x\|>1)`
66			`* 31-- atanh(\|x\|=1)`
67			`* 32-- scalb overflow`
68			`* 33-- scalb underflow`
69			`* 34-- j0(\|x\|>X_TLOSS)`
70			`* 35-- y0(x>X_TLOSS)`
71			`* 36-- j1(\|x\|>X_TLOSS)`
72			`* 37-- y1(x>X_TLOSS)`
73			`* 38-- jn(\|x\|>X_TLOSS, n)`
74			`* 39-- yn(x>X_TLOSS, n)`
75			`* 40-- gamma(finite) overflow`
76			`* 41-- gamma(-integer)`
77			`* 42-- pow(NaN,0.0)`
78			`*/`
79
80
81			`#ifdef __STDC__`
82			`double __kernel_standard(double x, double y, int type)`
83			`#else`
84			`double __kernel_standard(x,y,type)`
85			`double x,y; int type;`
86			`#endif`
87			`{`
88			`struct exception exc;`
89			`#ifndef HUGE_VAL /* this is the only routine that uses HUGE_VAL */`
90			`#define HUGE_VAL inf`
91			`double inf = 0.0;`
92
93			`SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */`
94			`#endif`
95
96			`#ifdef _USE_WRITE`
97			`/* (void) fflush(_stdout_r(p)); */`
98			`#endif`
99			`exc.arg1 = x;`
100			`exc.arg2 = y;`
101			`exc.err = 0;`
102			`switch(type) {`
103			`case 1:`
104			`case 101:`
105			`/* acos(\|x\|>1) */`
106			`exc.type = DOMAIN;`
107			`exc.name = type < 100 ? "acos" : "acosf";`
108			`exc.retval = zero;`
109			`if (_LIB_VERSION == _POSIX_)`
110			`errno = EDOM;`
111			`else if (!matherr(&exc)) {`
112			`/* if(_LIB_VERSION == _SVID_) {`
113			`(void) WRITE2("acos: DOMAIN error\n", 19);`
114			`} */`
115			`errno = EDOM;`
116			`}`
117			`break;`
118			`case 2:`
119			`case 102:`
120			`/* asin(\|x\|>1) */`
121			`exc.type = DOMAIN;`
122			`exc.name = type < 100 ? "asin" : "asinf";`
123			`exc.retval = zero;`
124			`if(_LIB_VERSION == _POSIX_)`
125			`errno = EDOM;`
126			`else if (!matherr(&exc)) {`
127			`/* if(_LIB_VERSION == _SVID_) {`
128			`(void) WRITE2("asin: DOMAIN error\n", 19);`
129			`} */`
130			`errno = EDOM;`
131			`}`
132			`break;`
133			`case 3:`
134			`case 103:`
135			`/* atan2(+-0,+-0) */`
136			`exc.arg1 = y;`
137			`exc.arg2 = x;`
138			`exc.type = DOMAIN;`
139			`exc.name = type < 100 ? "atan2" : "atan2f";`
140			`exc.retval = zero;`
141			`if(_LIB_VERSION == _POSIX_)`
142			`errno = EDOM;`
143			`else if (!matherr(&exc)) {`
144			`/* if(_LIB_VERSION == _SVID_) {`
145			`(void) WRITE2("atan2: DOMAIN error\n", 20);`
146			`} */`
147			`errno = EDOM;`
148			`}`
149			`break;`
150			`case 4:`
151			`case 104:`
152			`/* hypot(finite,finite) overflow */`
153			`exc.type = OVERFLOW;`
154			`exc.name = type < 100 ? "hypot" : "hypotf";`
155			`if (_LIB_VERSION == _SVID_)`
156			`exc.retval = HUGE;`
157			`else`
158			`exc.retval = HUGE_VAL;`
159			`if (_LIB_VERSION == _POSIX_)`
160			`errno = ERANGE;`
161			`else if (!matherr(&exc)) {`
162			`errno = ERANGE;`
163			`}`
164			`break;`
165			`case 5:`
166			`case 105:`
167			`/* cosh(finite) overflow */`
168			`exc.type = OVERFLOW;`
169			`exc.name = type < 100 ? "cosh" : "coshf";`
170			`if (_LIB_VERSION == _SVID_)`
171			`exc.retval = HUGE;`
172			`else`
173			`exc.retval = HUGE_VAL;`
174			`if (_LIB_VERSION == _POSIX_)`
175			`errno = ERANGE;`
176			`else if (!matherr(&exc)) {`
177			`errno = ERANGE;`
178			`}`
179			`break;`
180			`case 6:`
181			`case 106:`
182			`/* exp(finite) overflow */`
183			`exc.type = OVERFLOW;`
184			`exc.name = type < 100 ? "exp" : "expf";`
185			`if (_LIB_VERSION == _SVID_)`
186			`exc.retval = HUGE;`
187			`else`
188			`exc.retval = HUGE_VAL;`
189			`if (_LIB_VERSION == _POSIX_)`
190			`errno = ERANGE;`
191			`else if (!matherr(&exc)) {`
192			`errno = ERANGE;`
193			`}`
194			`break;`
195			`case 7:`
196			`case 107:`
197			`/* exp(finite) underflow */`
198			`exc.type = UNDERFLOW;`
199			`exc.name = type < 100 ? "exp" : "expf";`
200			`exc.retval = zero;`
201			`if (_LIB_VERSION == _POSIX_)`
202			`errno = ERANGE;`
203			`else if (!matherr(&exc)) {`
204			`errno = ERANGE;`
205			`}`
206			`break;`
207			`case 8:`
208			`case 108:`
209			`/* y0(0) = -inf */`
210			`exc.type = DOMAIN; /* should be SING for IEEE */`
211			`exc.name = type < 100 ? "y0" : "y0f";`
212			`if (_LIB_VERSION == _SVID_)`
213			`exc.retval = -HUGE;`
214			`else`
215			`exc.retval = -HUGE_VAL;`
216			`if (_LIB_VERSION == _POSIX_)`
217			`errno = EDOM;`
218			`else if (!matherr(&exc)) {`
219			`/* if (_LIB_VERSION == _SVID_) {`
220			`(void) WRITE2("y0: DOMAIN error\n", 17);`
221			`} */`
222			`errno = EDOM;`
223			`}`
224			`break;`
225			`case 9:`
226			`case 109:`
227			`/* y0(x<0) = NaN */`
228			`exc.type = DOMAIN;`
229			`exc.name = type < 100 ? "y0" : "y0f";`
230			`if (_LIB_VERSION == _SVID_)`
231			`exc.retval = -HUGE;`
232			`else`
233			`exc.retval = -HUGE_VAL;`
234			`if (_LIB_VERSION == _POSIX_)`
235			`errno = EDOM;`
236			`else if (!matherr(&exc)) {`
237			`/*if (_LIB_VERSION == _SVID_) {`
238			`(void) WRITE2("y0: DOMAIN error\n", 17);`
239			`} */`
240			`errno = EDOM;`
241			`}`
242			`break;`
243			`case 10:`
244			`case 110:`
245			`/* y1(0) = -inf */`
246			`exc.type = DOMAIN; /* should be SING for IEEE */`
247			`exc.name = type < 100 ? "y1" : "y1f";`
248			`if (_LIB_VERSION == _SVID_)`
249			`exc.retval = -HUGE;`
250			`else`
251			`exc.retval = -HUGE_VAL;`
252			`if (_LIB_VERSION == _POSIX_)`
253			`errno = EDOM;`
254			`else if (!matherr(&exc)) {`
255			`/* if (_LIB_VERSION == _SVID_) {`
256			`(void) WRITE2("y1: DOMAIN error\n", 17);`
257			`} */`
258			`errno = EDOM;`
259			`}`
260			`break;`
261			`case 11:`
262			`case 111:`
263			`/* y1(x<0) = NaN */`
264			`exc.type = DOMAIN;`
265			`exc.name = type < 100 ? "y1" : "y1f";`
266			`if (_LIB_VERSION == _SVID_)`
267			`exc.retval = -HUGE;`
268			`else`
269			`exc.retval = -HUGE_VAL;`
270			`if (_LIB_VERSION == _POSIX_)`
271			`errno = EDOM;`
272			`else if (!matherr(&exc)) {`
273			`/* if (_LIB_VERSION == _SVID_) {`
274			`(void) WRITE2("y1: DOMAIN error\n", 17);`
275			`} */`
276			`errno = EDOM;`
277			`}`
278			`break;`
279			`case 12:`
280			`case 112:`
281			`/* yn(n,0) = -inf */`
282			`exc.type = DOMAIN; /* should be SING for IEEE */`
283			`exc.name = type < 100 ? "yn" : "ynf";`
284			`if (_LIB_VERSION == _SVID_)`
285			`exc.retval = -HUGE;`
286			`else`
287			`exc.retval = -HUGE_VAL;`
288			`if (_LIB_VERSION == _POSIX_)`
289			`errno = EDOM;`
290			`else if (!matherr(&exc)) {`
291			`/* if (_LIB_VERSION == _SVID_) {`
292			`(void) WRITE2("yn: DOMAIN error\n", 17);`
293			`} */`
294			`errno = EDOM;`
295			`}`
296			`break;`
297			`case 13:`
298			`case 113:`
299			`/* yn(x<0) = NaN */`
300			`exc.type = DOMAIN;`
301			`exc.name = type < 100 ? "yn" : "ynf";`
302			`if (_LIB_VERSION == _SVID_)`
303			`exc.retval = -HUGE;`
304			`else`
305			`exc.retval = -HUGE_VAL;`
306			`if (_LIB_VERSION == _POSIX_)`
307			`errno = EDOM;`
308			`else if (!matherr(&exc)) {`
309			`/* if (_LIB_VERSION == _SVID_) {`
310			`(void) WRITE2("yn: DOMAIN error\n", 17);`
311			`} */`
312			`errno = EDOM;`
313			`}`
314			`break;`
315			`case 14:`
316			`case 114:`
317			`/* lgamma(finite) overflow */`
318			`exc.type = OVERFLOW;`
319			`exc.name = type < 100 ? "lgamma" : "lgammaf";`
320			`if (_LIB_VERSION == _SVID_)`
321			`exc.retval = HUGE;`
322			`else`
323			`exc.retval = HUGE_VAL;`
324			`if (_LIB_VERSION == _POSIX_)`
325			`errno = ERANGE;`
326			`else if (!matherr(&exc)) {`
327			`errno = ERANGE;`
328			`}`
329			`break;`
330			`case 15:`
331			`case 115:`
332			`/* lgamma(-integer) or lgamma(0) */`
333			`exc.type = SING;`
334			`exc.name = type < 100 ? "lgamma" : "lgammaf";`
335			`if (_LIB_VERSION == _SVID_)`
336			`exc.retval = HUGE;`
337			`else`
338			`exc.retval = HUGE_VAL;`
339			`if (_LIB_VERSION == _POSIX_)`
340			`errno = EDOM;`
341			`else if (!matherr(&exc)) {`
342			`/* if (_LIB_VERSION == _SVID_) {`
343			`(void) WRITE2("lgamma: SING error\n", 19);`
344			`} */`
345			`errno = EDOM;`
346			`}`
347			`break;`
348			`case 16:`
349			`case 116:`
350			`/* log(0) */`
351			`exc.type = SING;`
352			`exc.name = type < 100 ? "log" : "logf";`
353			`if (_LIB_VERSION == _SVID_)`
354			`exc.retval = -HUGE;`
355			`else`
356			`exc.retval = -HUGE_VAL;`
357			`if (_LIB_VERSION == _POSIX_)`
358			`errno = ERANGE;`
359			`else if (!matherr(&exc)) {`
360			`/* if (_LIB_VERSION == _SVID_) {`
361			`(void) WRITE2("log: SING error\n", 16);`
362			`} */`
363			`errno = EDOM;`
364			`}`
365			`break;`
366			`case 17:`
367			`case 117:`
368			`/* log(x<0) */`
369			`exc.type = DOMAIN;`
370			`exc.name = type < 100 ? "log" : "logf";`
371			`if (_LIB_VERSION == _SVID_)`
372			`exc.retval = -HUGE;`
373			`else`
374			`exc.retval = -HUGE_VAL;`
375			`if (_LIB_VERSION == _POSIX_)`
376			`errno = EDOM;`
377			`else if (!matherr(&exc)) {`
378			`/* if (_LIB_VERSION == _SVID_) {`
379			`(void) WRITE2("log: DOMAIN error\n", 18);`
380			`} */`
381			`errno = EDOM;`
382			`}`
383			`break;`
384			`case 18:`
385			`case 118:`
386			`/* log10(0) */`
387			`exc.type = SING;`
388			`exc.name = type < 100 ? "log10" : "log10f";`
389			`if (_LIB_VERSION == _SVID_)`
390			`exc.retval = -HUGE;`
391			`else`
392			`exc.retval = -HUGE_VAL;`
393			`if (_LIB_VERSION == _POSIX_)`
394			`errno = ERANGE;`
395			`else if (!matherr(&exc)) {`
396			`/* if (_LIB_VERSION == _SVID_) {`
397			`(void) WRITE2("log10: SING error\n", 18);`
398			`} */`
399			`errno = EDOM;`
400			`}`
401			`break;`
402			`case 19:`
403			`case 119:`
404			`/* log10(x<0) */`
405			`exc.type = DOMAIN;`
406			`exc.name = type < 100 ? "log10" : "log10f";`
407			`if (_LIB_VERSION == _SVID_)`
408			`exc.retval = -HUGE;`
409			`else`
410			`exc.retval = -HUGE_VAL;`
411			`if (_LIB_VERSION == _POSIX_)`
412			`errno = EDOM;`
413			`else if (!matherr(&exc)) {`
414			`/* if (_LIB_VERSION == _SVID_) {`
415			`(void) WRITE2("log10: DOMAIN error\n", 20);`
416			`} */`
417			`errno = EDOM;`
418			`}`
419			`break;`
420			`case 20:`
421			`case 120:`
422			`/* pow(0.0,0.0) */`
423			`/* error only if _LIB_VERSION == _SVID_ */`
424			`exc.type = DOMAIN;`
425			`exc.name = type < 100 ? "pow" : "powf";`
426			`exc.retval = zero;`
427			`if (_LIB_VERSION != _SVID_) exc.retval = 1.0;`
428			`else if (!matherr(&exc)) {`
429			`/* (void) WRITE2("pow(0,0): DOMAIN error\n", 23); */`
430			`errno = EDOM;`
431			`}`
432			`break;`
433			`case 21:`
434			`case 121:`
435			`/* pow(x,y) overflow */`
436			`exc.type = OVERFLOW;`
437			`exc.name = type < 100 ? "pow" : "powf";`
438			`if (_LIB_VERSION == _SVID_) {`
439			`exc.retval = HUGE;`
440			`y *= 0.5;`
441			`if(x<zero&&rint(y)!=y) exc.retval = -HUGE;`
442			`} else {`
443			`exc.retval = HUGE_VAL;`
444			`y *= 0.5;`
445			`if(x<zero&&rint(y)!=y) exc.retval = -HUGE_VAL;`
446			`}`
447			`if (_LIB_VERSION == _POSIX_)`
448			`errno = ERANGE;`
449			`else if (!matherr(&exc)) {`
450			`errno = ERANGE;`
451			`}`
452			`break;`
453			`case 22:`
454			`case 122:`
455			`/* pow(x,y) underflow */`
456			`exc.type = UNDERFLOW;`
457			`exc.name = type < 100 ? "pow" : "powf";`
458			`exc.retval = zero;`
459			`if (_LIB_VERSION == _POSIX_)`
460			`errno = ERANGE;`
461			`else if (!matherr(&exc)) {`
462			`errno = ERANGE;`
463			`}`
464			`break;`
465			`case 23:`
466			`case 123:`
467			`/* 0*neg /`
468			`exc.type = DOMAIN;`
469			`exc.name = type < 100 ? "pow" : "powf";`
470			`if (_LIB_VERSION == _SVID_)`
471			`exc.retval = zero;`
472			`else`
473			`exc.retval = -HUGE_VAL;`
474			`if (_LIB_VERSION == _POSIX_)`
475			`errno = EDOM;`
476			`else if (!matherr(&exc)) {`
477			`/* if (_LIB_VERSION == _SVID_) {`
478			`(void) WRITE2("pow(0,neg): DOMAIN error\n", 25);`
479			`} */`
480			`errno = EDOM;`
481			`}`
482			`break;`
483			`case 24:`
484			`case 124:`
485			`/* neg*non-integral /`
486			`exc.type = DOMAIN;`
487			`exc.name = type < 100 ? "pow" : "powf";`
488			`if (_LIB_VERSION == _SVID_)`
489			`exc.retval = zero;`
490			`else`
491			`exc.retval = zero/zero; /* X/Open allow NaN */`
492			`if (_LIB_VERSION == _POSIX_)`
493			`errno = EDOM;`
494			`else if (!matherr(&exc)) {`
495			`/* if (_LIB_VERSION == _SVID_) {`
496			`(void) WRITE2("neg**non-integral: DOMAIN error\n", 32);`
497			`} */`
498			`errno = EDOM;`
499			`}`
500			`break;`
501			`case 25:`
502			`case 125:`
503			`/* sinh(finite) overflow */`
504			`exc.type = OVERFLOW;`
505			`exc.name = type < 100 ? "sinh" : "sinhf";`
506			`if (_LIB_VERSION == _SVID_)`
507			`exc.retval = ( (x>zero) ? HUGE : -HUGE);`
508			`else`
509			`exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL);`
510			`if (_LIB_VERSION == _POSIX_)`
511			`errno = ERANGE;`
512			`else if (!matherr(&exc)) {`
513			`errno = ERANGE;`
514			`}`
515			`break;`
516			`case 26:`
517			`case 126:`
518			`/* sqrt(x<0) */`
519			`exc.type = DOMAIN;`
520			`exc.name = type < 100 ? "sqrt" : "sqrtf";`
521			`if (_LIB_VERSION == _SVID_)`
522			`exc.retval = zero;`
523			`else`
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("sqrt: DOMAIN error\n", 19);`
530			`} */`
531			`errno = EDOM;`
532			`}`
533			`break;`
534			`case 27:`
535			`case 127:`
536			`/* fmod(x,0) */`
537			`exc.type = DOMAIN;`
538			`exc.name = type < 100 ? "fmod" : "fmodf";`
539			`if (_LIB_VERSION == _SVID_)`
540			`exc.retval = x;`
541			`else`
542			`exc.retval = zero/zero;`
543			`if (_LIB_VERSION == _POSIX_)`
544			`errno = EDOM;`
545			`else if (!matherr(&exc)) {`
546			`/* if (_LIB_VERSION == _SVID_) {`
547			`(void) WRITE2("fmod: DOMAIN error\n", 20);`
548			`} */`
549			`errno = EDOM;`
550			`}`
551			`break;`
552			`case 28:`
553			`case 128:`
554			`/* remainder(x,0) */`
555			`exc.type = DOMAIN;`
556			`exc.name = type < 100 ? "remainder" : "remainderf";`
557			`exc.retval = zero/zero;`
558			`if (_LIB_VERSION == _POSIX_)`
559			`errno = EDOM;`
560			`else if (!matherr(&exc)) {`
561			`/* if (_LIB_VERSION == _SVID_) {`
562			`(void) WRITE2("remainder: DOMAIN error\n", 24);`
563			`} */`
564			`errno = EDOM;`
565			`}`
566			`break;`
567			`case 29:`
568			`case 129:`
569			`/* acosh(x<1) */`
570			`exc.type = DOMAIN;`
571			`exc.name = type < 100 ? "acosh" : "acoshf";`
572			`exc.retval = zero/zero;`
573			`if (_LIB_VERSION == _POSIX_)`
574			`errno = EDOM;`
575			`else if (!matherr(&exc)) {`
576			`/* if (_LIB_VERSION == _SVID_) {`
577			`(void) WRITE2("acosh: DOMAIN error\n", 20);`
578			`} */`
579			`errno = EDOM;`
580			`}`
581			`break;`
582			`case 30:`
583			`case 130:`
584			`/* atanh(\|x\|>1) */`
585			`exc.type = DOMAIN;`
586			`exc.name = type < 100 ? "atanh" : "atanhf";`
587			`exc.retval = zero/zero;`
588			`if (_LIB_VERSION == _POSIX_)`
589			`errno = EDOM;`
590			`else if (!matherr(&exc)) {`
591			`/* if (_LIB_VERSION == _SVID_) {`
592			`(void) WRITE2("atanh: DOMAIN error\n", 20);`
593			`} */`
594			`errno = EDOM;`
595			`}`
596			`break;`
597			`case 31:`
598			`case 131:`
599			`/* atanh(\|x\|=1) */`
600			`exc.type = SING;`
601			`exc.name = type < 100 ? "atanh" : "atanhf";`
602			`exc.retval = x/zero; /* sign(x)inf /`
603			`if (_LIB_VERSION == _POSIX_)`
604			`errno = EDOM;`
605			`else if (!matherr(&exc)) {`
606			`/* if (_LIB_VERSION == _SVID_) {`
607			`(void) WRITE2("atanh: SING error\n", 18);`
608			`} */`
609			`errno = EDOM;`
610			`}`
611			`break;`
612			`case 32:`
613			`case 132:`
614			`/* scalb overflow; SVID also returns +-HUGE_VAL */`
615			`exc.type = OVERFLOW;`
616			`exc.name = type < 100 ? "scalb" : "scalbf";`
617			`exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL;`
618			`if (_LIB_VERSION == _POSIX_)`
619			`errno = ERANGE;`
620			`else if (!matherr(&exc)) {`
621			`errno = ERANGE;`
622			`}`
623			`break;`
624			`case 33:`
625			`case 133:`
626			`/* scalb underflow */`
627			`exc.type = UNDERFLOW;`
628			`exc.name = type < 100 ? "scalb" : "scalbf";`
629			`exc.retval = copysign(zero,x);`
630			`if (_LIB_VERSION == _POSIX_)`
631			`errno = ERANGE;`
632			`else if (!matherr(&exc)) {`
633			`errno = ERANGE;`
634			`}`
635			`break;`
636			`case 34:`
637			`case 134:`
638			`/* j0(\|x\|>X_TLOSS) */`
639			`exc.type = TLOSS;`
640			`exc.name = type < 100 ? "j0" : "j0f";`
641			`exc.retval = zero;`
642			`if (_LIB_VERSION == _POSIX_)`
643			`errno = ERANGE;`
644			`else if (!matherr(&exc)) {`
645			`/* if (_LIB_VERSION == _SVID_) {`
646			`(void) WRITE2(exc.name, 2);`
647			`(void) WRITE2(": TLOSS error\n", 14);`
648			`} */`
649			`errno = ERANGE;`
650			`}`
651			`break;`
652			`case 35:`
653			`case 135:`
654			`/* y0(x>X_TLOSS) */`
655			`exc.type = TLOSS;`
656			`exc.name = type < 100 ? "y0" : "y0f";`
657			`exc.retval = zero;`
658			`if (_LIB_VERSION == _POSIX_)`
659			`errno = ERANGE;`
660			`else if (!matherr(&exc)) {`
661			`/* if (_LIB_VERSION == _SVID_) {`
662			`(void) WRITE2(exc.name, 2);`
663			`(void) WRITE2(": TLOSS error\n", 14);`
664			`} */`
665			`errno = ERANGE;`
666			`}`
667			`break;`
668			`case 36:`
669			`case 136:`
670			`/* j1(\|x\|>X_TLOSS) */`
671			`exc.type = TLOSS;`
672			`exc.name = type < 100 ? "j1" : "j1f";`
673			`exc.retval = zero;`
674			`if (_LIB_VERSION == _POSIX_)`
675			`errno = ERANGE;`
676			`else if (!matherr(&exc)) {`
677			`/* if (_LIB_VERSION == _SVID_) {`
678			`(void) WRITE2(exc.name, 2);`
679			`(void) WRITE2(": TLOSS error\n", 14);`
680			`} */`
681			`errno = ERANGE;`
682			`}`
683			`break;`
684			`case 37:`
685			`case 137:`
686			`/* y1(x>X_TLOSS) */`
687			`exc.type = TLOSS;`
688			`exc.name = type < 100 ? "y1" : "y1f";`
689			`exc.retval = zero;`
690			`if (_LIB_VERSION == _POSIX_)`
691			`errno = ERANGE;`
692			`else if (!matherr(&exc)) {`
693			`/* if (_LIB_VERSION == _SVID_) {`
694			`(void) WRITE2(exc.name, 2);`
695			`(void) WRITE2(": TLOSS error\n", 14);`
696			`} */`
697			`errno = ERANGE;`
698			`}`
699			`break;`
700			`case 38:`
701			`case 138:`
702			`/* jn(\|x\|>X_TLOSS) */`
703			`exc.type = TLOSS;`
704			`exc.name = type < 100 ? "jn" : "jnf";`
705			`exc.retval = zero;`
706			`if (_LIB_VERSION == _POSIX_)`
707			`errno = ERANGE;`
708			`else if (!matherr(&exc)) {`
709			`/* if (_LIB_VERSION == _SVID_) {`
710			`(void) WRITE2(exc.name, 2);`
711			`(void) WRITE2(": TLOSS error\n", 14);`
712			`} */`
713			`errno = ERANGE;`
714			`}`
715			`break;`
716			`case 39:`
717			`case 139:`
718			`/* yn(x>X_TLOSS) */`
719			`exc.type = TLOSS;`
720			`exc.name = type < 100 ? "yn" : "ynf";`
721			`exc.retval = zero;`
722			`if (_LIB_VERSION == _POSIX_)`
723			`errno = ERANGE;`
724			`else if (!matherr(&exc)) {`
725			`/* if (_LIB_VERSION == _SVID_) {`
726			`(void) WRITE2(exc.name, 2);`
727			`(void) WRITE2(": TLOSS error\n", 14);`
728			`} */`
729			`errno = ERANGE;`
730			`}`
731			`break;`
732			`case 40:`
733			`case 140:`
734			`/* gamma(finite) overflow */`
735			`exc.type = OVERFLOW;`
736			`exc.name = type < 100 ? "gamma" : "gammaf";`
737			`if (_LIB_VERSION == _SVID_)`
738			`exc.retval = HUGE;`
739			`else`
740			`exc.retval = HUGE_VAL;`
741			`if (_LIB_VERSION == _POSIX_)`
742			`errno = ERANGE;`
743			`else if (!matherr(&exc)) {`
744			`errno = ERANGE;`
745			`}`
746			`break;`
747			`case 41:`
748			`case 141:`
749			`/* gamma(-integer) or gamma(0) */`
750			`exc.type = SING;`
751			`exc.name = type < 100 ? "gamma" : "gammaf";`
752			`if (_LIB_VERSION == _SVID_)`
753			`exc.retval = HUGE;`
754			`else`
755			`exc.retval = HUGE_VAL;`
756			`if (_LIB_VERSION == _POSIX_)`
757			`errno = EDOM;`
758			`else if (!matherr(&exc)) {`
759			`/* if (_LIB_VERSION == _SVID_) {`
760			`(void) WRITE2("gamma: SING error\n", 18);`
761			`} */`
762			`errno = EDOM;`
763			`}`
764			`break;`
765			`case 42:`
766			`case 142:`
767			`/* pow(NaN,0.0) */`
768			`/* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */`
769			`exc.type = DOMAIN;`
770			`exc.name = type < 100 ? "pow" : "powf";`
771			`exc.retval = x;`
772			`if (_LIB_VERSION == _IEEE_ \|\|`
773			`_LIB_VERSION == _POSIX_) exc.retval = 1.0;`
774			`else if (!matherr(&exc)) {`
775			`errno = EDOM;`
776			`}`
777			`break;`
778			`}`
779			`if (exc.err != 0)`
780			`errno = exc.err;`
781			`return exc.retval;`
782			`}`
783
784