diff --git a/docs/source/vec3.rst b/docs/source/vec3.rst
index 8529333..0c5d590 100644
--- a/docs/source/vec3.rst
+++ b/docs/source/vec3.rst
@@ -31,6 +31,8 @@ Functions:
 
 1. :c:func:`glm_vec3`
 #. :c:func:`glm_vec_copy`
+#. :c:func:`glm_vec_zero`
+#. :c:func:`glm_vec_one`
 #. :c:func:`glm_vec_dot`
 #. :c:func:`glm_vec_cross`
 #. :c:func:`glm_vec_norm2`
@@ -76,6 +78,20 @@ Functions documentation
       | *[in]*  **a**     source
       | *[out]* **dest**  destination
 
+.. c:function:: void  glm_vec_zero(vec3 v)
+
+    makes all members 0.0f (zero)
+
+    Parameters:
+      | *[in, out]*  **v**     vector
+
+.. c:function:: void  glm_vec_one(vec3 v)
+
+    makes all members 1.0f (one)
+
+    Parameters:
+      | *[in, out]*  **v**     vector
+
 .. c:function:: float  glm_vec_dot(vec3 a, vec3 b)
 
     dot product of vec3
diff --git a/docs/source/vec4.rst b/docs/source/vec4.rst
index 6955246..8deed35 100644
--- a/docs/source/vec4.rst
+++ b/docs/source/vec4.rst
@@ -24,6 +24,8 @@ Functions:
 1. :c:func:`glm_vec4`
 #. :c:func:`glm_vec4_copy3`
 #. :c:func:`glm_vec4_copy`
+#. :c:func:`glm_vec4_zero`
+#. :c:func:`glm_vec4_one`
 #. :c:func:`glm_vec4_dot`
 #. :c:func:`glm_vec4_norm2`
 #. :c:func:`glm_vec4_norm`
@@ -78,6 +80,13 @@ Functions documentation
       | *[in]*  **v**     source
       | *[in]*  **dest**  destination
 
+.. c:function:: void  glm_vec4_zero(vec4 v)
+
+    makes all members zero
+
+    Parameters:
+      | *[in, out]*  **v**     vector
+
 .. c:function:: float  glm_vec4_dot(vec4 a, vec4 b)
 
     dot product of vec4
diff --git a/include/cglm/call/vec3.h b/include/cglm/call/vec3.h
index e79ec8f..396972f 100644
--- a/include/cglm/call/vec3.h
+++ b/include/cglm/call/vec3.h
@@ -24,6 +24,14 @@ CGLM_EXPORT
 void
 glmc_vec_copy(vec3 a, vec3 dest);
 
+CGLM_EXPORT
+void
+glmc_vec_zero(vec3 v);
+
+CGLM_EXPORT
+void
+glmc_vec_one(vec3 v);
+
 CGLM_EXPORT
 float
 glmc_vec_dot(vec3 a, vec3 b);
diff --git a/include/cglm/call/vec4.h b/include/cglm/call/vec4.h
index ad915e6..95f91e2 100644
--- a/include/cglm/call/vec4.h
+++ b/include/cglm/call/vec4.h
@@ -21,6 +21,14 @@ CGLM_EXPORT
 void
 glmc_vec4(vec3 v3, float last, vec4 dest);
 
+CGLM_EXPORT
+void
+glmc_vec4_zero(vec4 v);
+
+CGLM_EXPORT
+void
+glmc_vec4_one(vec4 v);
+
 CGLM_EXPORT
 void
 glmc_vec4_copy3(vec4 a, vec3 dest);
diff --git a/include/cglm/vec3.h b/include/cglm/vec3.h
index 714165b..6f42855 100644
--- a/include/cglm/vec3.h
+++ b/include/cglm/vec3.h
@@ -103,6 +103,32 @@ glm_vec_copy(vec3 a, vec3 dest) {
   dest[2] = a[2];
 }
 
+/*!
+ * @brief make vector zero
+ *
+ * @param[in, out]  v vector
+ */
+CGLM_INLINE
+void
+glm_vec_zero(vec4 v) {
+  v[0] = 0.0f;
+  v[1] = 0.0f;
+  v[2] = 0.0f;
+}
+
+/*!
+ * @brief make vector one
+ *
+ * @param[in, out]  v vector
+ */
+CGLM_INLINE
+void
+glm_vec_one(vec4 v) {
+  v[0] = 1.0f;
+  v[1] = 1.0f;
+  v[2] = 1.0f;
+}
+
 /*!
  * @brief vec3 dot product
  *
diff --git a/include/cglm/vec4.h b/include/cglm/vec4.h
index c50b4f9..44c6a31 100644
--- a/include/cglm/vec4.h
+++ b/include/cglm/vec4.h
@@ -111,6 +111,42 @@ glm_vec4_copy(vec4 v, vec4 dest) {
 #endif
 }
 
+/*!
+ * @brief make vector zero
+ *
+ * @param[in, out]  v vector
+ */
+CGLM_INLINE
+void
+glm_vec4_zero(vec4 v) {
+#if defined( __SSE__ ) || defined( __SSE2__ )
+  _mm_store_ps(v, _mm_setzero_ps());
+#else
+  v[0] = 0.0f;
+  v[1] = 0.0f;
+  v[2] = 0.0f;
+  v[3] = 0.0f;
+#endif
+}
+
+/*!
+ * @brief make vector one
+ *
+ * @param[in, out]  v vector
+ */
+CGLM_INLINE
+void
+glm_vec4_one(vec4 v) {
+#if defined( __SSE__ ) || defined( __SSE2__ )
+  _mm_store_ps(v, _mm_set1_ps(1.0f));
+#else
+  v[0] = 1.0f;
+  v[1] = 1.0f;
+  v[2] = 1.0f;
+  v[3] = 1.0f;
+#endif
+}
+
 /*!
  * @brief vec4 dot product
  *
diff --git a/makefile.am b/makefile.am
index 2922373..00800c0 100644
--- a/makefile.am
+++ b/makefile.am
@@ -110,7 +110,8 @@ test_tests_SOURCES=\
     test/src/test_clamp.c \
     test/src/test_euler.c \
     test/src/test_quat.c \
-    test/src/test_vec4.c
+    test/src/test_vec4.c \
+    test/src/test_vec3.c
 
 all-local:
 	sh ./post-build.sh
diff --git a/src/vec3.c b/src/vec3.c
index f7e2692..f7c890e 100644
--- a/src/vec3.c
+++ b/src/vec3.c
@@ -20,6 +20,18 @@ glmc_vec_copy(vec3 a, vec3 dest) {
   glm_vec_copy(a, dest);
 }
 
+CGLM_EXPORT
+void
+glmc_vec_zero(vec3 v) {
+  glm_vec_zero(v);
+}
+
+CGLM_EXPORT
+void
+glmc_vec_one(vec3 v) {
+  glm_vec_one(v);
+}
+
 CGLM_EXPORT
 float
 glmc_vec_dot(vec3 a, vec3 b) {
diff --git a/src/vec4.c b/src/vec4.c
index 7228070..df93556 100644
--- a/src/vec4.c
+++ b/src/vec4.c
@@ -14,6 +14,18 @@ glmc_vec4(vec3 v3, float last, vec4 dest) {
   glm_vec4(v3, last, dest);
 }
 
+CGLM_EXPORT
+void
+glmc_vec4_zero(vec4 v) {
+  glm_vec4_zero(v);
+}
+
+CGLM_EXPORT
+void
+glmc_vec4_one(vec4 v) {
+  glm_vec4_one(v);
+}
+
 CGLM_EXPORT
 void
 glmc_vec4_copy3(vec4 a, vec3 dest) {
diff --git a/test/src/test_main.c b/test/src/test_main.c
index 7995a5a..b0649cd 100644
--- a/test/src/test_main.c
+++ b/test/src/test_main.c
@@ -29,7 +29,10 @@ main(int argc, const char * argv[]) {
     cmocka_unit_test(test_quat),
 
     /* vec4 */
-    cmocka_unit_test(test_vec4)
+    cmocka_unit_test(test_vec4),
+
+    /* vec3 */
+    cmocka_unit_test(test_vec3)
   };
 
   return cmocka_run_group_tests(tests, NULL, NULL);
diff --git a/test/src/test_tests.h b/test/src/test_tests.h
index 1dfbb5f..224d943 100644
--- a/test/src/test_tests.h
+++ b/test/src/test_tests.h
@@ -31,4 +31,7 @@ test_quat(void **state);
 void
 test_vec4(void **state);
 
+void
+test_vec3(void **state);
+
 #endif /* test_tests_h */
diff --git a/test/src/test_vec3.c b/test/src/test_vec3.c
new file mode 100644
index 0000000..5a3a4c8
--- /dev/null
+++ b/test/src/test_vec3.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#include "test_common.h"
+
+void
+test_vec3(void **state) {
+  vec3  v;
+
+  /* test zero */
+  glm_vec_zero(v);
+  test_assert_vec3_eq(GLM_VEC3_ZERO, v);
+
+  /* test one */
+  glm_vec_one(v);
+  test_assert_vec3_eq(GLM_VEC3_ONE, v);
+}
diff --git a/test/src/test_vec4.c b/test/src/test_vec4.c
index 51986f1..a80d9c7 100644
--- a/test/src/test_vec4.c
+++ b/test/src/test_vec4.c
@@ -70,4 +70,12 @@ test_vec4(void **state) {
     test_rand_vec4(v);
     test_assert_eqf(test_vec4_norm2(v), glm_vec4_norm2(v));
   }
+
+  /* test zero */
+  glm_vec4_zero(v);
+  test_assert_vec4_eq(GLM_VEC4_ZERO, v);
+
+  /* test one */
+  glm_vec4_one(v);
+  test_assert_vec4_eq(GLM_VEC4_ONE, v);
 }