function testAreEqual()
 {
     /*{{{*/
     $this->assertFalse(Math_ComplexOp::areEqual($this->cnum1, $this->cnum2));
 }
echo "csch(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::coth($a);
echo "coth(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::asinh($a);
echo "asinh(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::acosh($a);
echo "acosh(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::atanh($a);
echo "atanh(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::asech($a);
echo "asech(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::acsch($a);
echo "acsch(a) = " . $z->toString() . "\n";
$z = Math_ComplexOp::acoth($a);
echo "acoth(a) = " . $z->toString() . "\n";
if (!Math_ComplexOp::areEqual($a, $b)) {
    echo "a != b\n";
}
$z = Math_ComplexOp::add($a, $b);
echo "add(a, b) = " . $z->toString() . "\n";
$z = Math_ComplexOp::sub($a, $b);
echo "sub(a,b) = a - b = " . $z->toString() . "\n";
$t = Math_ComplexOp::sub($b, $a);
echo "b - a: " . $t->toString() . "\n";
$t = Math_ComplexOp::sub($b, Math_ComplexOp::conjugate($a));
echo "b - a': " . $t->toString() . "\n";
$v = Math_ComplexOp::conjugate($b);
$t = Math_ComplexOp::sub($v, $a);
echo "b' - a: " . $t->toString() . "\n";
$v = Math_ComplexOp::conjugate($b);
$t = Math_ComplexOp::sub($v, Math_ComplexOp::conjugate($a));