Conditional #define in C


Conditional #define in C



I want to write a conditional define in C with controlled with the arguments.



Something like this:



define RTL_REG(reg_name,inst) inst == 0 ? DUT_0_##reg_name : inst == 1 ? DUT_1_##reg_name : inst == 2 ? DUT_2_##reg_name : inst == 3 ? DUT_3_##reg_name : DUT_0_##reg_name



But the code isn't working the way I want. Essentially it is substituting the value of inst for the define.



What I a, looking for is:



RTL_REG(CLK_EN,0) -> DUT_0_CLK_EN



RTL_REG(CLK_EN,1) -> DUT_1_CLK_EN



What I am getting:
RTL_REG(CLK_EN,0) -> 0



Can you some C experts help me out here?



Note:
Tried adding () as well at the beginning and ending of the definition, but then again, "(" comes in the define substitution!









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