public function Fraction::setDenominator in Fraction 7

Set the denominator.

Parameters

$value: The denominator value.

Return value

Fraction Returns this Fraction object.

8 calls to Fraction::setDenominator()

Fraction::add in ./fraction.class.inc

Add another fraction to this one.

Fraction::divide in ./fraction.class.inc

Divide this fraction by another one.

Fraction::fromDecimal in ./fraction.class.inc

Calculates the numerator and denominator from a decimal value.

Fraction::multiply in ./fraction.class.inc

Multiply this fraction with another one.

Fraction::reciprocate in ./fraction.class.inc

Reciprocate the fraction.

... See full list

File

./fraction.class.inc, line 57

Fraction class

Class

Fraction

@file Fraction class

Code

public function setDenominator($value) {

  // Protect against division by zero.
  if (empty($value)) {
    $this
      ->setNumerator(0);
    $value = 1;
  }

  // Normalize negative fractions.
  // If the denominator is negative, invert the signs for both numbers.
  if ($value < 0) {
    $numerator = $this
      ->getNumerator();
    $numerator = $numerator * -1;
    $this
      ->setNumerator($numerator);
    $value = $value * -1;
  }

  // Cast the value as a string and save it.
  $this->denominator = (string) $value;
  return $this;
}