std::bits

std::bits is the standard bit-manipulation and byte-order helper module.

Full reference: bits.

Supported forms#

Defined in std/bits.slk:

• Byte swaps:
• std::bits::bswap_u16
• std::bits::bswap_u32
• std::bits::bswap_u64
• Rotations:
• std::bits::rotl_u32, std::bits::rotr_u32
• std::bits::rotl_u64, std::bits::rotr_u64
• Bit counts:
• std::bits::popcount_u32, std::bits::clz_u32, std::bits::ctz_u32
• std::bits::popcount_u64, std::bits::clz_u64, std::bits::ctz_u64

Example#

import std::bits;

fn main () -> int {
  let v: u32 = 1;
  let r: u32 = std::bits::rotl_u32(v, 5);
  if r != ((1 as u32) << 5) {
    return 1;
  }

  if std::bits::popcount_u32(r) != 1 {
    return 2;
  }

  return 0;
}