function testdepreciationFixedDeclining()
 {
     $this->assertTrue(abs(186083.333333 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 1, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(186083.333333 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 1, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(259639.416667 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 2, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(176814.44275 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 3, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(120410.635513 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 4, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(81999.642784 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 5, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(55841.756736 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 6, 7)) < FINANCE_PRECISION);
     $this->assertTrue(abs(15845.098474 - Math_Finance::depreciationFixedDeclining(1000000, 100000, 6, 7, 7)) < FINANCE_PRECISION);
 }