How to count the number of trailing zeros of an integer? The simplest way is
to use the built-in function __builtin_ctz():
uint64_t count(uint64_t n) {
return __builtin_ctz(n);
}
What will happen if we don't have __builtin_ctz()? If we have another
built-in function __popcount(), which can …
RISC-V is an instruction set architecture (ISA) released by UC Berkeley. Besides, a high performance, power efficient, and royalty-free open source implementation Rocket Chip is available.
RISC-V was developed by Krste Asanović and David A. Patterson. In their technical report, they claimed that an open instruction set can benefit both …
