John Gatrell <gatrel...@gmail.com> writes: I think you missed why the 0x7F is unnecessary. If you start with 8 bits and divide by 2 then the top bit must become zero. gcc does this itself and suppresses the 0x7F. So this idea will help other compilers start with 8-bits to achieve the same. The same trick can be used in hand-crafted assembler implementations.
You misread the code; n is a full limb. Masking by 0x7F is absolutely not unnecessary! Replacing the bitwise logical and maskiong with a cast to "unsigned char" is not portable. (But swapping the division and the mask operation, adjusting the mask accordingly, is semantically equvalent to the original code. As I said in my previous reply, this might help some compiler.) -- Torbjörn Please encrypt, key id 0xC8601622 _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel
