diff --git a/include/cglm/call/vec4.h b/include/cglm/call/vec4.h
index adcfc94..729a3f2 100644
--- a/include/cglm/call/vec4.h
+++ b/include/cglm/call/vec4.h
@@ -37,6 +37,10 @@ CGLM_EXPORT
 void
 glmc_vec4_copy(vec4 v, vec4 dest);
 
+CGLM_EXPORT
+void
+glmc_vec4_ucopy(vec4 v, vec4 dest);
+
 CGLM_EXPORT
 float
 glmc_vec4_dot(vec4 a, vec4 b);
diff --git a/include/cglm/vec4.h b/include/cglm/vec4.h
index fa9f82c..d8d6b0a 100644
--- a/include/cglm/vec4.h
+++ b/include/cglm/vec4.h
@@ -120,6 +120,21 @@ glm_vec4_copy(vec4 v, vec4 dest) {
 #endif
 }
 
+/*!
+ * @brief copy all members of [a] to [dest]
+ *
+ * @param[in]  v    source
+ * @param[out] dest destination
+ */
+CGLM_INLINE
+void
+glm_vec4_ucopy(vec4 v, vec4 dest) {
+  dest[0] = v[0];
+  dest[1] = v[1];
+  dest[2] = v[2];
+  dest[3] = v[3];
+}
+
 /*!
  * @brief make vector zero
  *
diff --git a/src/vec4.c b/src/vec4.c
index fb22796..29ccc4d 100644
--- a/src/vec4.c
+++ b/src/vec4.c
@@ -38,6 +38,12 @@ glmc_vec4_copy(vec4 v, vec4 dest) {
   glm_vec4_copy(v, dest);
 }
 
+CGLM_EXPORT
+void
+glmc_vec4_ucopy(vec4 v, vec4 dest) {
+  glm_vec4_ucopy(v, dest);
+}
+
 CGLM_EXPORT
 float
 glmc_vec4_dot(vec4 a, vec4 b) {