interface.ilMathAdapter.php

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<?php

interface ilMathAdapter
{
    public function add($left_operand, $right_operand, int $scale = null);

    public function sub($left_operand, $right_operand, int $scale = null);

    public function mul($left_operand, $right_operand, int $scale = null);

    public function div($left_operand, $right_operand, int $scale = null);

    public function mod($left_operand, $right_operand);

    public function pow($left_operand, $right_operand, int $scale = null);

    public function sqrt($operand, int $scale = null);


    public function comp($left_operand, $right_operand, int $scale = null);

    public function equals($left_operand, $right_operand, int $scale = null): bool;

    public function applyScale($left_operand, int $scale = null);

    public function round($value, int $precision = 0): string;
}