absval_ref.v « PRESENTATION_Prog « manual - iCE40/yosys - clone of https://github.com/YosysHQ/yosys

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module absval_ref(input signed [3:0] a, output [3:0] y);
    assign y = a[3] ? -a : a;
endmodule

you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp. // https://github.com/ocornut/imgui struct ID3D10Device; IMGUI_IMPL_API bool ImGui_ImplDX10_Init(ID3D10Device* device); IMGUI_IMPL_API void ImGui_ImplDX10_Shutdown(); IMGUI_IMPL_API void ImGui_ImplDX10_NewFrame(); IMGUI_IMPL_API void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data); // Use if you want to reset your rendering device without losing ImGui state. IMGUI_IMPL_API void ImGui_ImplDX10_InvalidateDeviceObjects(); IMGUI_IMPL_API bool ImGui_ImplDX10_CreateDeviceObjects();