function cabs2( z ) {
	var re = real( z );
	var im = imag( z );
	return (re*re) + (im*im);
}
Computes the squared absolute value of a double-precision complex floating-point number.

## Notes

-   Be careful of overflow and underflow.

@param {Complex128} z - complex number
@returns {number} squared absolute value

@example
var Complex128 = require( '@stdlib/complex/float64/ctor' );

var v = cabs2( new Complex128( 5.0, 3.0 ) );
// returns 34.0