Long double vs Double

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "libtcc.h"

char my_program[] =
"int GetLongDoubleSize(int n)\n"
"{\n"
"    return sizeof(long double);\n"
"}\n"
"int GetDoubleSize(int n)\n"
"{\n"
"    return sizeof(double);\n"
"}\n";


int main(int argc, char **argv)
{
    TCCState *s;
    int (*func)(int);

    s = tcc_new();
    if (!s) {
        fprintf(stderr, "Could not create tcc state\n");
        exit(1);
    }

    /* if tcclib.h and libtcc1.a are not installed, where can we find them */
    if (argc == 2 && !memcmp(argv[1], "lib_path=",9))
        tcc_set_lib_path(s, argv[1]+9);

    /* MUST BE CALLED before any compilation */
    tcc_set_output_type(s, TCC_OUTPUT_MEMORY);

    if (tcc_compile_string(s, my_program) == -1)
        return 1;

    /* relocate the code */
    if (tcc_relocate(s, TCC_RELOCATE_AUTO) < 0)
        return 1;

    /* get entry symbol */
    printf("----- tcc compiled 'char program': \n");

    func = tcc_get_symbol(s, "GetLongDoubleSize");
    printf("Long Double size: %d\n",func(0));

    func = tcc_get_symbol(s, "GetDoubleSize");
    printf("Double size: %d\n",func(0));


    printf("----- gcc compiled functions: \n");

    printf("gcc Long Double size: %d\n",sizeof(long double));
    printf("gcc Double size: %d\n",sizeof(double));

    /* delete the state */
    tcc_delete(s);

    return 0;
}