# bsfq = no/yes --- -DUSE_BSFQ --- Use bsfq x86_64 asm-instruction
# --- (Works only with GCC and ICC 64-bit)
# popcnt = no/yes --- -DUSE_POPCNT --- Use popcnt x86_64 asm-instruction
# bsfq = no/yes --- -DUSE_BSFQ --- Use bsfq x86_64 asm-instruction
# --- (Works only with GCC and ICC 64-bit)
# popcnt = no/yes --- -DUSE_POPCNT --- Use popcnt x86_64 asm-instruction