////
//// -DUSE_BSFQ | Use bsfq asm-instruction. Works only in 64-bit mode.
//// | Works with ICC and GCC, not with MSVC. Gives a small speed up.
////
//// -DUSE_BSFQ | Use bsfq asm-instruction. Works only in 64-bit mode.
//// | Works with ICC and GCC, not with MSVC. Gives a small speed up.