Function bech32_polymod_step

Bech32.cpp:28–36

#include "Bech32.h"

uint32_t bech32_polymod_step(uint32_t pre) {
  uint8_t b = pre >> 25;
  return ((pre & 0x1FFFFFF) << 5) ^
    (-((b >> 0) & 1) & 0x3b6a57b2UL) ^
    (-((b >> 1) & 1) & 0x26508e6dUL) ^
    (-((b >> 2) & 1) & 0x1ea119faUL) ^
    (-((b >> 3) & 1) & 0x3d4233ddUL) ^
    (-((b >> 4) & 1) & 0x2a1462b3UL);
}

static const char* charset = "qpzry9x8gf2tvdw0s3jn54khce6mua7l";