Function decimal_from_float_bits

cpp/fory/serialization/compatible_scalar.cc:592–609

}

bool decimal_from_float_bits(bool negative, uint64_t significand,
                             int32_t exponent, Decimal &out) {
  BigUInt magnitude = BigUInt::from_uint64(significand);
  if (exponent >= 0) {
    for (int32_t i = 0; i < exponent; ++i) {
      magnitude.multiply(2);
    }
    return canonical_decimal(std::move(magnitude), negative, 0, out);
  }
  const int32_t scale = -exponent;
  if (scale > MAX_COMPATIBLE_DECIMAL_DIGITS) {
    return false;
  }
  for (int32_t i = 0; i < scale; ++i) {
    magnitude.multiply(5);
  }
  return canonical_decimal(std::move(magnitude), negative, scale, out);
}

bool decimal_from_float32(float value, Decimal &out) {
  uint32_t bits = 0;