On Wed, Dec 30, 2009 at 10:38 PM, Dr. David Kirkby
<david.kir...@onetel.net> wrote:
> Em, This is very odd. exp(1) gives a different result on SPARC if you build
> with gcc or Sun Studio. GCC is correct, and Sun Studio is wrong. Yet Sage on
> 't2' was build with gcc, not Sun Studio.
gcc is actually inlining exp(1.0) to its correct value. The exp() from
the sun library is incorrect. Try this program instead:
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char **argv) {
double x = 1.0;
if (argc>1)
x = atof(argv[1]);
printf("%.16lf\n",exp(x));
}
Best, Gonzalo
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