AT&T UNIX™PC Unix System V Users Manual - tenox

MA THERR (3M) MATHERR (3M)
}
BESSEL:
yO, yl, yn
(neg. no.)
EXP:
POW:
(neg.)••(nonint.),
0**0
LOG:
log(O):
log( neg.):
SQRT:
GAMMA:
HYPOT:
SINH, COSH:
SIN, COS:
TAN:
ACOS, ASIN:
case OVERFLOW:
if (!strcmp("exp", x- > name)) {
I* if exp, print message, return the argument *I
fprintf(stderr, "exp of %f\n", x->argl);
x- >retval = x- >argl;
} else if (!strcmp("sinh", x- >name)) {
I* if sinh, set errno, return 0 *I
errno = ERANGE;
x- >retval = 0;
} else
I* otherwise, return HUGE *I
x- >ret val = HUGE;
break;
case UNDERFLOW:
return (0); I* execute default procedure *I
case TLOSS:
case PLOSS:
I* print message and return 0 *I
fprintf(stderr, "loss of significance in %s\n", x- > name);
x- >retval = 0;
break;
}
return (1);
DEFAULT ERROR HANDLING PROCEDURES
Type• of Error•
DOMAIN SING OVERFLOW UNDERFLOW TLOSS PLOSS
- - H 0 - •
M, -H - - - - -
- - H 0 -
- - H 0 - -
M, O - - - - -
- M, -H - - - -
M, -H - - - - -
M, O - - - - -
- M, H - - - -
- - H - - -
- - H - - -
- - - - M, O M, •
- - H - 0 •
M, O - - - - -
- 2-