diff --git a/include/cglm/call/clipspace/project_no.h b/include/cglm/call/clipspace/project_no.h
new file mode 100644
index 0000000..858f525
--- /dev/null
+++ b/include/cglm/call/clipspace/project_no.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#ifndef cglmc_project_no_h
+#define cglmc_project_no_h
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "../cglm.h"
+
+CGLM_EXPORT
+void
+glmc_unprojecti_no(vec3 pos, mat4 invMat, vec4 vp, vec3 dest);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* cglmc_project_no_h */
diff --git a/include/cglm/call/clipspace/project_zo.h b/include/cglm/call/clipspace/project_zo.h
new file mode 100644
index 0000000..ccfe64b
--- /dev/null
+++ b/include/cglm/call/clipspace/project_zo.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#ifndef cglmc_project_zo_h
+#define cglmc_project_zo_h
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "../cglm.h"
+
+CGLM_EXPORT
+void
+glmc_unprojecti_zo(vec3 pos, mat4 invMat, vec4 vp, vec3 dest);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* cglmc_project_zo_h */
diff --git a/src/clipspace/project_no.c b/src/clipspace/project_no.c
new file mode 100644
index 0000000..e160a86
--- /dev/null
+++ b/src/clipspace/project_no.c
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#include "../../include/cglm/clipspace/project_no.h"
+
+CGLM_EXPORT
+void
+glmc_unprojecti_no(vec3 pos, mat4 invMat, vec4 vp, vec3 dest) {
+  glm_unprojecti_no(pos, invMat, vp, dest);
+}
diff --git a/src/clipspace/project_zo.c b/src/clipspace/project_zo.c
new file mode 100644
index 0000000..1496986
--- /dev/null
+++ b/src/clipspace/project_zo.c
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#include "../../include/cglm/clipspace/project_zo.h"
+
+CGLM_EXPORT
+void
+glmc_unprojecti_zo(vec3 pos, mat4 invMat, vec4 vp, vec3 dest) {
+  glm_unprojecti_zo(pos, invMat, vp, dest);
+}