jon@applix.UUCP (Jon Dale) (09/23/87)
we have found some problems with the math libraries in Ultrix 2.0 running on a VAX 8600. Specifically, using the "power" function "pow", an overflow condition results in a SIGILL (illegal instruction), and and underflow does not result in any notification at all, you just get a zero back. The first of these causes the most significant problems. Ultrix 1.2 correctly reported the overflow as a SIGFPE (floating point exception), and did not report the underflow. The test routine is written in "C" and linked with the standard -lm switch. Anyone know a fix or workaround so I can avoid crashing on a floating point overflow?? What's the problem here? Jon Dale APPLiX ...ames!harvard!m2c!applix!jon