[9fans] Problem with native vs APE math

["Doug Henderson" <djhender@telusplanet.net>]

Here is my example program, running on a Celeron 400MHz. with the June 17
release. I have built it in native mode (mk, 8c, 8l) and in the APE
environment. It works when built in APE (and also, with minor mods in
linux). The native mode executable suicides during the log(0.0L) call:
edemo 355: sys: fp: invalid fppc=0x1391 pc=0x00001050

The library code looks ok. It should return -Inf for log(0) and NaN for
log(-1), which is what the APE does.

Any ideas?

#ifdef _POSIX_SOURCE
#include <stdio.h>
#include <math.h>
#else
#include <u.h>
#include <libc.h>
#include <stdio.h>
#endif
int main(int argc, char* argv[])
{
 printf("log(1.0) = %f\n", log(1.0L));
 printf("log(0.0) = %f\n", log(0.0L));
 printf("log(-1.0) = %f\n", log(-1.0L));
 return 0;
}
--  --
Doug Henderson, Calgary, Alberta, Canada