<TD>Signals of type 'Double' will not generate synthesizable HDL. For synthesizable HDL code, <ahref="matlab:configset.internal.open('triangle_wave_vhdl','FloatingPointTargetConfiguration')">set the "Library" option to "Native Floating Point"</a>. For non-synthesizable and simulation-only HDL code, <ahref="matlab:configset.internal.open('triangle_wave_vhdl','TreatRealsInGeneratedCodeAs')">set the "Check for presence of reals in generated HDL code" diagnostic to "Warning" or "None"</a>.</TD>