Function convert_bits

Bech32.cpp:179–199

}

static int convert_bits(uint8_t* out, size_t* outlen, int outbits, const uint8_t* in, size_t inlen, int inbits, int pad) {
  uint32_t val = 0;
  int bits = 0;
  uint32_t maxv = (((uint32_t)1) << outbits) - 1;
  while (inlen--) {
    val = (val << inbits) | *(in++);
    bits += inbits;
    while (bits >= outbits) {
      bits -= outbits;
      out[(*outlen)++] = (val >> bits) & maxv;
    }
  }
  if (pad) {
    if (bits) {
      out[(*outlen)++] = (val << (outbits - bits)) & maxv;
    }
  } else if (((val << (outbits - bits)) & maxv) || bits >= inbits) {
    return 0;
  }
  return 1;
}

int segwit_addr_encode(char *output, const char *hrp, int witver, const uint8_t *witprog, size_t witprog_len) {
  uint8_t data[65];