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Hi,

Some postgresql regression tests fail on 2.0 mac68k because some double =20=

values do not undeflow.
(see for regression test log =20
http://www.pgbuildfarm.org/cgi-bin/show_log.pl?nm=3Dosprey&dt=3D2004-12=20=

-20%2005:00:21)

Here is a test program:

test.c:

#include <stdlib.h>
#include <errno.h>

int main() {
         double res;
         double zero =3D 0.0;
         char *small =3D "10e-400";
         res =3D strtod(small,NULL);
         printf("%e, %d\n", res, errno);
         if (res =3D=3D zero) {
                 printf("res =3D=3D zero\n");
         }
}

the output is:
#test
0.000000e+00, 0
res =3D=3D zero

So strtod returned 0, but did not set errno to ERANGE (34)

testing shows that 10e400 overflows, but to underflow, one must go to =20=

as little as 10e-512 (10e-511 shows the same result as 10e-400).

So is there a bug in NetBSD's strtod ?
Is something wrong with the test program ?

Regards,

R=E9mi Zara
--
R=E9mi Zara
http://www.remi-zara.net/=

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