A/UX® Programmer's Reference Sections

matherr(3M) rnatherr(3M)
table below. In every case, errno is set to EDOM or ERANGE and
the program continues.
EXAMPLES
iinclude
int
matherr(x)
register struct exception *x;
{
switch (x->type) {
case DOMAIN:
1* change sqrt to return sqrt(-arg1), not 0 *1
if (!strcmp(x->name, "sqrt"» {
x->retval = sqrt(-x->arg1);
return (0); 1* print message and set errno *1
February, 1990
Revision C
case SING:
1* all other domain or sing errors,
print message and abort *1
fprintf(stderr, "domain error in %s\n", x->name);
abort ( );
case PLOSS:
1* print detailed error message *1
fprintf(stderr, "loss of significance in %s(%g)
x->name, x->arg1, x->retval);
return (1); 1* take no other action *1
return (0); 1* all other errors,
execute default procedure *1
2
%g\n",