pkahn@meridian.ads.com (Phil Kahn) (11/05/88)
I wrote some image convolution code on a straight MacOS MACII, using 5MB, system 5, using MPW C v2.0. Because this uses a lot of floating point multiplication, I used the following compiler directives to directly generate instructions for the coprocessor and 68020: C -mc68020 -mc68881 -elems881 imagefuns.c As required, I linked with CLib881.o, CSANELib881.o, and Math881.o . The code runs well and very fast as described (45 seconds versus 24 minutes). Here is the problem. When I run the code on the A/UX at work, the machine freezes up. This only happens when I specify the faster compiler options. It seems to especially freeze up on floating point operations. Finally, the question: Is there a known problem with A/UX configured machines using MPW V2.0 and the faster compiler options? thanks, phil...