add new matrix mat2x3

Initial function being

glm_mat2x3_make

Signed-off-by: Vincent Davis Jr <vince@underview.tech>

test/src/test_common.c

@@ -174,6 +174,19 @@ test_assert_mat2_eq_zero(mat2 m2) {
   TEST_SUCCESS
 }
 
+test_status_t
+test_assert_mat2x3_eq_zero(mat2x3 m2x3) {
+  int i, j;
+
+  for (i = 0; i < 2; i++) {
+    for (j = 0; j < 3; j++) {
+      ASSERT(test_eq(m2x3[i][j], 0.0f))
+    }
+  }
+
+  TEST_SUCCESS
+}
+
 test_status_t
 test_assert_mat3_eq(mat3 m1, mat3 m2) {
   int i, j;