Function ShiftBytesLeftSmall

core/utils/bits.h:46–51

TODO(melvinw): add support for shifting at bit granularity Shifts `buf` to the left by `len` bytes and fills in with zeroes using std::memmove() and std::memset().

// Shifts `buf` to the left by `len` bytes and fills in with zeroes using
// std::memmove() and std::memset().
static inline void ShiftBytesLeftSmall(uint8_t *buf, const size_t len,
                                       size_t shift) {
  shift = std::min(shift, len);
  memmove(buf, buf + shift, len - shift);
  memset(buf + len - shift, 0, shift);
}

// TODO(melvinw): add support for shifting at bit granularity
// Shifts `buf` to the left by `len` bytes and fills in with zeroes.