Re: underflow on alpha
On Fri, Apr 09, 1999 at 03:14:03PM +0200, Renato Tognaccini wrote:
> Hi, I have the a problem running the following very simple C program on
> alpha (Debian Linux):
>
> int main() {
> double a,b;
> a=1.e-314
> b=1.;
> a=a*b;
> }
>
> during the execution of the program, the system returns floating point
> exception and stops the execution of the program.
> This is a kind of underflow, better say denormalized operand error.
> Do you know how can I manage this problem on alpha? On Intel there is no
> problem and the result of the floating point operation is zero.
>
Except for the typo on a=... (need to add a ; )
gcc -mieee file.c should do it.
$ cat test.c
int main() {
double a,b;
a=1.e-314;
b=1.;
a=a*b;
}
$ gcc -mieee -o t test.c
$ ./t
$ uname -a
Linux faure 2.0.35 #1 Wed Feb 17 15:20:33 CST 1999 alpha unknown
HTH,
B.
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