The built-in function <code>complex</code> constructs a complex
value from a floating-point real and imaginary part, while
<code>real</code> and <code>imag</code>
extract the real and imaginary parts of a complex value.
</p>

<pre class="grammar">
complex(realPart, imaginaryPart floatT) complexT
real(complexT) floatT
imag(complexT) floatT
</pre>

<p>

			case 8:
				return s.constFloat64(n.Type(), f)
			default:
				s.Fatalf("bad float size %d", n.Type().Size())
				return nil
			}
		case constant.Complex:
			re, _ := constant.Float64Val(constant.Real(u))
			im, _ := constant.Float64Val(constant.Imag(u))
			switch n.Type().Size() {
			case 8:
				pt := types.Types[types.TFLOAT32]
				return s.newValue2(ssa.OpComplexMake, n.Type(),