Type-Generic Function Overloading via C11 _Generic Selection

#include <stdio.h>
#include <math.h>
 
double process_double(double val) { return sin(val); }
float process_float(float val) { return sinf(val); }
long double process_ldouble(long double val) { return sinl(val); }
 
#define compute_sine(X) _Generic((X), \
    float: process_float, \
    double: process_double, \
    long double: process_ldouble \
)(X)
 
int main(void) {
    float f = 1.57f;
    double d = 3.14159;
    printf("Float sine: %f\n", compute_sine(f));
    printf("Double sine: %f\n", compute_sine(d));
    return 0;
}