📄 k_standard.c
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*err = EDOM;
}
break;
case 17:
/* log(x<0) */
exc.type = DOMAIN;
exc.name = "log";
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("log: DOMAIN error\n", 18);
}
*err = EDOM;
}
break;
case 18:
/* log10(0) */
exc.type = SING;
exc.name = "log10";
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("log10: SING error\n", 18);
}
*err = EDOM;
}
break;
case 19:
/* log10(x<0) */
exc.type = DOMAIN;
exc.name = "log10";
if (_LIB_VERSION == _SVID_)
exc.retval = -HUGE;
else
exc.retval = -HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("log10: DOMAIN error\n", 20);
}
*err = EDOM;
}
break;
case 20:
/* pow(0.0,0.0) */
/* error only if _LIB_VERSION == _SVID_ */
exc.type = DOMAIN;
exc.name = "pow";
exc.retval = zero;
if (_LIB_VERSION != _SVID_) exc.retval = 1.0;
else if (!fd_matherr(&exc)) {
(void) WRITE2("pow(0,0): DOMAIN error\n", 23);
*err = EDOM;
}
break;
case 21:
/* pow(x,y) overflow */
exc.type = OVERFLOW;
exc.name = "pow";
if (_LIB_VERSION == _SVID_) {
exc.retval = HUGE;
y *= 0.5;
if(x<zero&&fd_rint(y)!=y) exc.retval = -HUGE;
} else {
exc.retval = HUGE_VAL;
y *= 0.5;
if(x<zero&&fd_rint(y)!=y) exc.retval = -HUGE_VAL;
}
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
*err = ERANGE;
}
break;
case 22:
/* pow(x,y) underflow */
exc.type = UNDERFLOW;
exc.name = "pow";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
*err = ERANGE;
}
break;
case 23:
/* 0**neg */
exc.type = DOMAIN;
exc.name = "pow";
if (_LIB_VERSION == _SVID_)
exc.retval = zero;
else
exc.retval = -HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("pow(0,neg): DOMAIN error\n", 25);
}
*err = EDOM;
}
break;
case 24:
/* neg**non-integral */
exc.type = DOMAIN;
exc.name = "pow";
if (_LIB_VERSION == _SVID_)
exc.retval = zero;
else
exc.retval = zero/zero; /* X/Open allow NaN */
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("neg**non-integral: DOMAIN error\n", 32);
}
*err = EDOM;
}
break;
case 25:
/* sinh(finite) overflow */
exc.type = OVERFLOW;
exc.name = "sinh";
if (_LIB_VERSION == _SVID_)
exc.retval = ( (x>zero) ? HUGE : -HUGE);
else
exc.retval = ( (x>zero) ? HUGE_VAL : -HUGE_VAL);
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
*err = ERANGE;
}
break;
case 26:
/* sqrt(x<0) */
exc.type = DOMAIN;
exc.name = "sqrt";
if (_LIB_VERSION == _SVID_)
exc.retval = zero;
else
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("sqrt: DOMAIN error\n", 19);
}
*err = EDOM;
}
break;
case 27:
/* fmod(x,0) */
exc.type = DOMAIN;
exc.name = "fmod";
if (_LIB_VERSION == _SVID_)
exc.retval = x;
else
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("fmod: DOMAIN error\n", 20);
}
*err = EDOM;
}
break;
case 28:
/* remainder(x,0) */
exc.type = DOMAIN;
exc.name = "remainder";
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("remainder: DOMAIN error\n", 24);
}
*err = EDOM;
}
break;
case 29:
/* acosh(x<1) */
exc.type = DOMAIN;
exc.name = "acosh";
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("acosh: DOMAIN error\n", 20);
}
*err = EDOM;
}
break;
case 30:
/* atanh(|x|>1) */
exc.type = DOMAIN;
exc.name = "atanh";
exc.retval = zero/zero;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("atanh: DOMAIN error\n", 20);
}
*err = EDOM;
}
break;
case 31:
/* atanh(|x|=1) */
exc.type = SING;
exc.name = "atanh";
exc.retval = x/zero; /* sign(x)*inf */
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("atanh: SING error\n", 18);
}
*err = EDOM;
}
break;
case 32:
/* scalb overflow; SVID also returns +-HUGE_VAL */
exc.type = OVERFLOW;
exc.name = "scalb";
exc.retval = x > zero ? HUGE_VAL : -HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
*err = ERANGE;
}
break;
case 33:
/* scalb underflow */
exc.type = UNDERFLOW;
exc.name = "scalb";
exc.retval = fd_copysign(zero,x);
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
*err = ERANGE;
}
break;
case 34:
/* j0(|x|>X_TLOSS) */
exc.type = TLOSS;
exc.name = "j0";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2(exc.name, 2);
(void) WRITE2(": TLOSS error\n", 14);
}
*err = ERANGE;
}
break;
case 35:
/* y0(x>X_TLOSS) */
exc.type = TLOSS;
exc.name = "y0";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2(exc.name, 2);
(void) WRITE2(": TLOSS error\n", 14);
}
*err = ERANGE;
}
break;
case 36:
/* j1(|x|>X_TLOSS) */
exc.type = TLOSS;
exc.name = "j1";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2(exc.name, 2);
(void) WRITE2(": TLOSS error\n", 14);
}
*err = ERANGE;
}
break;
case 37:
/* y1(x>X_TLOSS) */
exc.type = TLOSS;
exc.name = "y1";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2(exc.name, 2);
(void) WRITE2(": TLOSS error\n", 14);
}
*err = ERANGE;
}
break;
case 38:
/* jn(|x|>X_TLOSS) */
exc.type = TLOSS;
exc.name = "jn";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2(exc.name, 2);
(void) WRITE2(": TLOSS error\n", 14);
}
*err = ERANGE;
}
break;
case 39:
/* yn(x>X_TLOSS) */
exc.type = TLOSS;
exc.name = "yn";
exc.retval = zero;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2(exc.name, 2);
(void) WRITE2(": TLOSS error\n", 14);
}
*err = ERANGE;
}
break;
case 40:
/* gamma(finite) overflow */
exc.type = OVERFLOW;
exc.name = "gamma";
if (_LIB_VERSION == _SVID_)
exc.retval = HUGE;
else
exc.retval = HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = ERANGE;
else if (!fd_matherr(&exc)) {
*err = ERANGE;
}
break;
case 41:
/* gamma(-integer) or gamma(0) */
exc.type = SING;
exc.name = "gamma";
if (_LIB_VERSION == _SVID_)
exc.retval = HUGE;
else
exc.retval = HUGE_VAL;
if (_LIB_VERSION == _POSIX_)
*err = EDOM;
else if (!fd_matherr(&exc)) {
if (_LIB_VERSION == _SVID_) {
(void) WRITE2("gamma: SING error\n", 18);
}
*err = EDOM;
}
break;
case 42:
/* pow(NaN,0.0) */
/* error only if _LIB_VERSION == _SVID_ & _XOPEN_ */
exc.type = DOMAIN;
exc.name = "pow";
exc.retval = x;
if (_LIB_VERSION == _IEEE_ ||
_LIB_VERSION == _POSIX_) exc.retval = 1.0;
else if (!fd_matherr(&exc)) {
*err = EDOM;
}
break;
}
return exc.retval;
}
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