I am sorry for the delay to answer at the first topic, so I wrote this new one. As explained, I try using PIII instructions to use registers 128 bits of floating point. So, I installed the Service Pack 4 for Visual C++. After I installed the Processor Pack. Finally I tried to write a bit of code using __m128. So, I included fvec.h. But the compilation crashes. So far, I think that the Processor Pack installed a new compilater(or just several options) to understand assembler PIII. The problem comes from a file, called mmintrin.h, with : #ifdef __ICL typedef unsigned long long __m64; #endif The problem is that __ICL is not defined. However processor Pack should defines this value(''I''ntel ''C''ompi''L''er). So, do I have to set several parameters of Visual C++ or do I have to change parameters of compilation. Thanks.

quote:Original post by ArnoAtWork
I am sorry for the delay to answer at the first topic, so I wrote this new one.

I don''t quite follow your reasoning. Your first thread is still here, you just have to reply to it to put it back on the active topics page.