Added sinf/cosf. Minor refactoring to matrix lib. Added complex type.

lib/std/math.complex.c3

@@ -0,0 +1,31 @@
+module std::math::complex<Type>;
+
+union Complex
+{
+	struct
+    {
+    	Type r, c;
+    }
+	Type[<2>] v;
+}
+
+macro Complex Complex.add(Complex a, Complex b)
+{
+	return Complex { .v = a.v + b.v };
+}
+
+macro Complex Complex.sub(Complex a, Complex b)
+{
+	return Complex { .v = a.v - b.v };
+}
+
+macro Complex Complex.mult(Complex a, Complex b)
+{
+	return Complex { .r = a.r * b.r - a.c * b.c, .c = a.r * b.c + b.r * a.c };
+}
+
+fn Complex Complex.div(Complex a, Complex b)
+{
+	Type div = b.r * b.r + b.c * b.c;
+	return Complex { .r = (a.r * b.r + a.c * b.c) / div, .c = (a.c * b.r - a.r * b.c) / div };
+}