getid3_lib::Float2String() │ public static │ WP 1.0

{} It's a method of the class: getid3_lib{}

No Hooks.

Return

String|false.

Usage

$result = getid3_lib::Float2String( $floatvalue, $bits );

$floatvalue(float) (required)

-

$bits(int) (required)

-

Code of getid3_lib::Float2String() getid3 lib::Float2String ^{WP 6.0}

public static function Float2String($floatvalue, $bits) {
	$exponentbits = 0;
	$fractionbits = 0;
	switch ($bits) {
		case 32:
			$exponentbits = 8;
			$fractionbits = 23;
			break;

		case 64:
			$exponentbits = 11;
			$fractionbits = 52;
			break;

		default:
			return false;
	}
	if ($floatvalue >= 0) {
		$signbit = '0';
	} else {
		$signbit = '1';
	}
	$normalizedbinary  = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
	$biasedexponent    = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
	$exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
	$fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);

	return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
}