function Calculator::bitwise

Performs a bitwise operation on a decimal number.

Parameters

'and'|'or'|'xor' $operator The operator to use.:

string $a The left operand.:

string $b The right operand.:

3 calls to Calculator::bitwise()

Calculator::and in vendor/brick/math/src/Internal/Calculator.php

Calculates bitwise AND of two numbers.

Calculator::or in vendor/brick/math/src/Internal/Calculator.php

Calculates bitwise OR of two numbers.

Calculator::xor in vendor/brick/math/src/Internal/Calculator.php

Calculates bitwise XOR of two numbers.

File

vendor/brick/math/src/Internal/Calculator.php, line 553

Class

Calculator

Performs basic operations on arbitrary size integers.

Namespace

Brick\Math\Internal

Code

private function bitwise(string $operator, string $a, string $b) : string {
    [
        $aNeg,
        $bNeg,
        $aDig,
        $bDig,
    ] = $this->init($a, $b);
    $aBin = $this->toBinary($aDig);
    $bBin = $this->toBinary($bDig);
    $aLen = \strlen($aBin);
    $bLen = \strlen($bBin);
    if ($aLen > $bLen) {
        $bBin = \str_repeat("\x00", $aLen - $bLen) . $bBin;
    }
    elseif ($bLen > $aLen) {
        $aBin = \str_repeat("\x00", $bLen - $aLen) . $aBin;
    }
    if ($aNeg) {
        $aBin = $this->twosComplement($aBin);
    }
    if ($bNeg) {
        $bBin = $this->twosComplement($bBin);
    }
    $value = match ($operator) {    'and' => $aBin & $bBin,
        'or' => $aBin | $bBin,
        'xor' => $aBin ^ $bBin,
    
    };
    $negative = match ($operator) {    'and' => $aNeg and $bNeg,
        'or' => $aNeg or $bNeg,
        'xor' => $aNeg xor $bNeg,
    
    };
    if ($negative) {
        $value = $this->twosComplement($value);
    }
    $result = $this->toDecimal($value);
    return $negative ? $this->neg($result) : $result;
}