public function testLog10()
{
$this->assertTrue(CMathf::equalsZt(CMathf::log10(10.0), 1.0));
$this->assertTrue(CMathf::equalsZt(CMathf::log10(100.0), 2.0));
$this->assertTrue(CMathf::equalsZt(CMathf::log10(10), 1.0));
$this->assertTrue(CMathf::equalsZt(CMathf::log10(100), 2.0));
}