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cstm32

Is it possible to have #ifdef,#endif in functions's argument in c?

Hello I wanted to know if it is possible to have preprocessor language ine the argument of a function.

Something like this :

static void OnTxData( 
#ifdef MODULE1
    TxParams_t* params
#else
    Tx2Params_t* params
#endif
                       )
{
...
}
Solution

  • Instead of hard to read:

    static void OnTxData( 
#ifdef MODULE1
    TxParams_t* params
#else
    Tx2Params_t* params
#endif
                       )
{
...
}


    #ifdef MODULE1
    #define TX_Params TxParams_t
#else
    #define TX_Params Tx2Params_t
#endif

static void OnTxData( TX_Params *prams)
{
...
}

    or

    #ifdef MODULE1
    typedef TxParams_t TX_Params
#else
    typedef Tx2Params_t TX_Params
#endif

static void OnTxData( TX_Params *prams)
{
...
}

    or (IMO worse)

    #ifdef MODULE1
static void OnTxData( TxParams_t *prams)
#else
static void OnTxData( Tx2Params_t *prams)
#endif
{
...
}