Math: cleanup.

src/Magnum/Math/Test/RectangularMatrixTest.cpp

@@ -37,7 +37,7 @@ namespace Magnum { namespace Math {
 
 namespace Implementation {
 
-template<> struct RectangularMatrixConverter<2, 3, float, Mat2x3> {
+template<> struct RectangularMatrixConverter<2, 3, Float, Mat2x3> {
     constexpr static RectangularMatrix<2, 3, Float> from(const Mat2x3& other) {
         return RectangularMatrix<2, 3, Float>(
             Vector<3, Float>(other.a[0], other.a[1], other.a[2]),

src/Magnum/Math/Test/VectorTest.cpp

@@ -37,7 +37,7 @@ namespace Magnum { namespace Math {
 
 namespace Implementation {
 
-template<> struct VectorConverter<3, float, Vec3> {
+template<> struct VectorConverter<3, Float, Vec3> {
     constexpr static Vector<3, Float> from(const Vec3& other) {
         return {other.x, other.y, other.z};
     }