ID Number: Q22317
4.00 5.00 5.10 6.00 6.00a 6.00ax 7.00 | 5.10 6.00 6.00a
MS-DOS | OS/2
Summary:
matherr() does trap inline floating-point errors. matherr() only traps
floating-point errors generated by functions in the math libraries.
For example, the following program returns control to the matherr()
routine, not yours:
#include <math.h>
matherr(x)
struct exception *x;
{
x->retval=2;
return(1);
}
main()
{
double f;
f=2.0;
while (1)
f*=f;
}
To trap inline floating-point errors such as the one above, we
recommend that you use signal with SIGFPE (see the Microsoft C
run-time reference manual).
Additional reference words: 5.00 5.10 6.00 6.00a 6.00ax 7.00