LinearRegression constructor Null safety

LinearRegression(
  1. Registers regs
)

Implementation

factory LinearRegression(Registers regs) {
  regs[7]; // Throw exception if invalid
  final num = regs[2].asDouble;
  if (num == 0 || num == 1) {
    throw CalculatorError(0);
  }
  final sumX = regs[3].asDouble;
  final m = num * regs[4].asDouble - sumX * sumX;
  final sumY = regs[5].asDouble;
  final n = num * regs[6].asDouble - sumY * sumY;
  if (m == 0 || n == 0) {
    throw CalculatorError(0);
  }
  final p = num * regs[7].asDouble - sumX * sumY;
  return LinearRegression._internal(num, m, n, p, sumY, sumX);
}