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bits.md

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Bits: collection of functions for low level bits manipulation.

The bits module provides several portable low-level functions for bits manipulation:

  • seq::popcnt64: population count on a 64 bits word
  • seq::popcnt32: population count on a 32 bits word
  • seq::popcnt16: population count on a 16 bits word
  • seq::popcnt8: population count on a 8 bits word
  • seq::bit_scan_forward_32: index of the lowest set bit in a 32 bits word
  • seq::bit_scan_forward_64: index of the lowest set bit in a 64 bits word
  • seq::bit_scan_reverse_32: index of the highest set bit in a 32 bits word
  • seq::bit_scan_reverse_64: index of the highest set bit in a 32 bits word
  • seq::bit_scan_forward: index of the lowest set bit in a size_t word
  • seq::bit_scan_reverse: index of the highest set bit in a size_t word
  • seq::static_bit_scan_reverse: index of the highest set bit at compile time
  • seq::count_digits_base_10: number of digits to represent an integer in base 10
  • seq::nth_bit_set: index of the nth set bit in a 64 bits word
  • seq::byte_swap_16: byte swap for 16 bits word
  • seq::byte_swap_32: byte swap for 32 bits word
  • seq::byte_swap_64: byte swap for 64 bits word