| public subtractScalar ( float $value ) : self | ||
| $value | float | |
| return | self | |
public function testSubtractScalar()
{
$matrix = new Matrix([[4, 2, 6], [1, 7, 3], [7, 3, 2]]);
$subtracted = $matrix->subtractScalar(4);
static::assertEquals(0, $subtracted->get(0, 0));
static::assertEquals(-2, $subtracted->get(0, 1));
static::assertEquals(2, $subtracted->get(0, 2));
static::assertEquals(-3, $subtracted->get(1, 0));
static::assertEquals(3, $subtracted->get(1, 1));
static::assertEquals(-1, $subtracted->get(1, 2));
static::assertEquals(3, $subtracted->get(2, 0));
static::assertEquals(-1, $subtracted->get(2, 1));
static::assertEquals(-2, $subtracted->get(2, 2));
}