diff --git a/include/cglm-mat.h b/include/cglm-mat.h
index 45b99f3..f143757 100644
--- a/include/cglm-mat.h
+++ b/include/cglm-mat.h
@@ -20,6 +20,22 @@
 
 #define GLM_MAT4_IDENTITY (mat4)GLM_MAT4_IDENTITY_INIT
 
+CGLM_INLINE
+void
+glm_mat4_dup(mat4 mat, mat4 dest) {
+#ifdef __AVX__
+  _mm256_store_ps(dest[0], _mm256_load_ps(mat[0]));
+  _mm256_store_ps(dest[2], _mm256_load_ps(mat[2]));
+#elif defined( __SSE__ ) || defined( __SSE2__ )
+  _mm_store_ps(dest[0], _mm_load_ps(mat[0]));
+  _mm_store_ps(dest[1], _mm_load_ps(mat[1]));
+  _mm_store_ps(dest[2], _mm_load_ps(mat[2]));
+  _mm_store_ps(dest[3], _mm_load_ps(mat[3]));
+#else
+  glm__memcpy(float, dest, mat, sizeof(mat4));
+#endif
+}
+
 CGLM_INLINE
 void
 glm_mat4_mul(mat4 l, mat4 r, mat4 d) {