trunc function

dynamic trunc(dynamic x)

Returns the integer part of a number by removing any fractional digits.

x is the input value.

If x is NaN, returns NaN. If x is positive, returns the floor value of x. Otherwise, returns the ceil value of x.

Example: ``dart print(trunc(4.7)); // Output: 4 print(trunc(-4.7)); // Output: -4

Implementation

dynamic trunc(dynamic x) {
  if (x is num) {
    if (x.isNaN) return double.nan;
    if (x > 0) return x.floorToDouble();
    return x.ceilToDouble();
  } else if (x is Complex) {
    return x.real.truncateToDouble();
  } else {
    throw ArgumentError('Input should be either num or Complex');
  }
}