diff --git a/include/cglm/call/vec3.h b/include/cglm/call/vec3.h
index bb5a5d7..89a9e4e 100644
--- a/include/cglm/call/vec3.h
+++ b/include/cglm/call/vec3.h
@@ -321,7 +321,11 @@ glmc_vec3_abs(vec3 v, vec3 dest);
 CGLM_EXPORT
 void
 glmc_vec3_fract(vec3 v, vec3 dest);
-    
+
+CGLM_EXPORT
+void
+glmc_vec3_floor(vec3 v, vec3 dest);
+
 CGLM_EXPORT
 float
 glmc_vec3_hadd(vec3 v);
diff --git a/include/cglm/struct/vec3-ext.h b/include/cglm/struct/vec3-ext.h
index 1a3e88a..212953f 100644
--- a/include/cglm/struct/vec3-ext.h
+++ b/include/cglm/struct/vec3-ext.h
@@ -230,6 +230,20 @@ glms_vec3_(fract)(vec3s v) {
   return r;
 }
 
+/*!
+ * @brief floor of each vector item
+ *
+ * @param[in]  v    vector
+ * @return          dest destination vector
+ */
+CGLM_INLINE
+vec3s
+glms_vec3_(floor)(vec3s v) {
+  vec3s r;
+  glm_vec3_floor(v.raw, r.raw);
+  return r;
+}
+
 /*!
  * @brief vector reduction by summation
  * @warning could overflow
diff --git a/src/vec3.c b/src/vec3.c
index c1316dc..8427236 100644
--- a/src/vec3.c
+++ b/src/vec3.c
@@ -442,6 +442,12 @@ glmc_vec3_fract(vec3 v, vec3 dest) {
   glm_vec3_fract(v, dest);
 }
 
+CGLM_EXPORT
+void
+glmc_vec3_floor(vec3 v, vec3 dest) {
+  glm_vec3_floor(v, dest);
+}
+
 CGLM_EXPORT
 float
 glmc_vec3_hadd(vec3 v) {