Re: Bug in libm

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

coypu%SDF.ORG@localhost a écrit :
> Hi,

	Hello,

> I was slightly curious about this.
> The implementation of lrint for alpha is very simple.
> It's some boilerplate, then a call to cvttq which does
> a conversion from T_floating to quadword.
>
> Does this code trigger it?
>
> #include <math.h>
> #include <stdio.h>
>
> int main() {
> 	double input = 2.34E20;
> 	printf("%f %ld\n", input, lrint(input));
> }

	Nope.

einstein:[~] > gcc -o test test.c
einstein:[~] > ./test
234000000000000000000.000000 -5807672958224171008

but result is (for me) strange.

> I was curious how we can disable the exceptions, but
> GCC says the default compilation mode should do it,
> and we might need to explicitly change things to
> reach another mode.
> (the flag seems to be -mfp-trap-mode)
>
> Alternatively, are you using vax float?

	No. Only -mieee that is set by pkgsrc.

	Regards,

	JKB