Fps limit: simplify converting frame time back to fps

src/hud_elements.cpp

@@ -644,11 +644,8 @@ void HudElements::resolution(){
 void HudElements::show_fps_limit(){
     if (HUDElements.params->enabled[OVERLAY_PARAM_ENABLED_show_fps_limit]){
         int fps = 0;
-        double frame_time = (double)fps_limit_stats.targetFrameTime.count()/1000000;
-        fps = (1 / frame_time) *1000;
-        if (frame_time == 0.0){
-            fps = 0;
-        }
+        if (fps_limit_stats.targetFrameTime.count())
+            fps = 1000000000 / fps_limit_stats.targetFrameTime.count();
         ImGui::TableNextRow(); ImGui::TableNextColumn();
         ImGui::PushFont(HUDElements.sw_stats->font1);
         ImGui::TextColored(HUDElements.colors.engine, "%s","FPS limit");

src/overlay.cpp

@@ -203,7 +203,7 @@ void stop_hw_updater()
 void update_hud_info_with_frametime(struct swapchain_stats& sw_stats, struct overlay_params& params, uint32_t vendorID, uint64_t frametime_ns){
    uint32_t f_idx = sw_stats.n_frames % ARRAY_SIZE(sw_stats.frames_stats);
    uint64_t now = os_time_get_nano(); /* ns */
-   double elapsed = (double)(now - sw_stats.last_fps_update); /* ns */
+   auto elapsed = now - sw_stats.last_fps_update; /* ns */
    float frametime_ms = frametime_ns / 1000000.f;
    frametime_data[f_idx] = frametime_ms;