add missing impl for project_z

include/cglm/call/clipspace/project_no.h

@@ -21,6 +21,10 @@ CGLM_EXPORT
 void
 glmc_project_no(vec3 pos, mat4 m, vec4 vp, vec3 dest);
 
+CGLM_EXPORT
+float
+glmc_project_z_no(vec3 pos, mat4 m);
+
 #ifdef __cplusplus
 }
 #endif

include/cglm/call/clipspace/project_zo.h

@@ -21,6 +21,10 @@ CGLM_EXPORT
 void
 glmc_project_zo(vec3 pos, mat4 m, vec4 vp, vec3 dest);
 
+CGLM_EXPORT
+float
+glmc_project_z_zo(vec3 pos, mat4 m);
+
 #ifdef __cplusplus
 }
 #endif

include/cglm/clipspace/project_no.h

@@ -103,7 +103,7 @@ glm_project_z_no(vec3 v, mat4 m) {
   z = m[0][2] * v[0] + m[1][2] * v[1] + m[2][2] * v[2] + m[3][2];
   w = m[0][3] * v[0] + m[1][3] * v[1] + m[2][3] * v[2] + m[3][3];
 
-  return 0.5f * (z / w) + 0.5;
+  return 0.5f * (z / w) + 0.5f;
 }
 
 #endif /* cglm_project_no_h */

src/clipspace/project_no.c

@@ -19,3 +19,9 @@ void
 glmc_project_no(vec3 pos, mat4 m, vec4 vp, vec3 dest) {
   glm_project_no(pos, m, vp, dest);
 }
+
+CGLM_EXPORT
+float
+glmc_project_z_no(vec3 pos, mat4 m) {
+  return glm_project_z_no(pos, m);
+}

src/clipspace/project_zo.c

@@ -19,3 +19,9 @@ void
 glmc_project_zo(vec3 pos, mat4 m, vec4 vp, vec3 dest) {
   glm_project_zo(pos, m, vp, dest);
 }
+
+CGLM_EXPORT
+float
+glmc_project_z_zo(vec3 pos, mat4 m) {
+  return glm_project_z_zo(pos, m);
+}