function testdepreciationSYD() { $this->assertTrue(abs(4090.909091 - Math_Finance::depreciationSYD(30000, 7500, 10, 1)) < FINANCE_PRECISION); $this->assertTrue(abs(409.090909 - Math_Finance::depreciationSYD(30000, 7500, 10, 10)) < FINANCE_PRECISION); }