Template in C

template.c

#include<stdio.h>

#define TLIST(T,L) \
struct _List##L { \
    struct _List##L * _next; \
    struct _List##L * _prev; \
    T          _data; \
} L = {&(L), &(L)}

#define TOTO(T, L) T L

#define SUM_TEMPLATE(T) T sum_##T(T a, T b) { return ( a + b ); }

SUM_TEMPLATE(int)
SUM_TEMPLATE(float)

#define GET_TYPE_STR(T) _Generic( (T), int: "int", float: "float", default: "")
#define SUM(a, b) sum_##GET_TYPE_STR(a)(a,b)

int main(void)
{
        printf("%d\n", sum_int(2, 2));
        printf("%f\n", sum_float(2.4, 2.4));
        printf("%d\n", SUM(2, 2));
        return (0);
}