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approximatelyEqual

mathbeginner

Checks if two numbers are approximately equal to each other.

Use abs() to compare the absolute difference of the two values to $epsilon. Omit the third parameter, $epsilon, to use a default value of 0.001.

function approximatelyEqual($number1, $number2, $epsilon = 0.001)
{
  return abs($number1 - $number2) < $epsilon;
}