Hi, anyone knows a good method for multiplying big numbers (64 bit) with fpu ?
Posted on 2006-03-07 21:47:45 by Axial
Read this Simply FPU and this Intel SSE2

Posted on 2006-03-07 23:27:50 by Greg
It all depends on what you intend to do. The FPU can handle numbers as high as 10^4000 in round numbers. However, you will always be limited to a maximum accuracy of 64 bits which translates into approx. 19 significant digits.

If you intend to multiply integers which are larger than a 64-bit qword (about 10^19) or if you are looking for better accuracy in the results, the FPU is not the way to go.

Posted on 2006-03-08 00:35:12 by Raymond
Ok I got it : I had to use qword instead of dword.
The links you gave me are quite useful since I'm not very familiar with all this stuff ;)
Thanks !
Posted on 2006-03-08 01:05:16 by Axial