Function decodeUpto1Bit

src/simplicity/bitstream.c:62–73

Decode an encoded bitstring up to length 1. * If successful returns the length of the bitstring and 'result' contains the decoded bits. * The decoded bitstring is stored in the LSBs of 'result', with the LSB being the last bit decoded. * Any remaining bits in 'result' are reset to 0. * If the decoded bitstring would be too long 'SIMPLICITY_ERR_DATA_OUT_OF_RANGE' is returned ('result' may be mo

 *               NULL != stream
 */
static int32_t decodeUpto1Bit(int32_t* result, bitstream* stream) {
  *result = read1Bit(stream);
  if (*result <= 0) return *result;

  *result = read1Bit(stream);
  if (*result < 0) return *result;
  if (0 != *result) return SIMPLICITY_ERR_DATA_OUT_OF_RANGE;

  *result = read1Bit(stream);
  if (*result < 0) return *result;
  return 1;
}

/* Decode an encoded number between 1 and 3 inclusive.
 * When successful returns the decoded result.