tinycc/tests/tests2/93_integer_promotion.c

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/* integer promotion */
int printf(const char*, ...);
#define promote(s) printf(" %ssigned : %s\n", (s) - 100 < 0 ? " " : "un", #s);
int main (void)
{
struct {
unsigned ub:3;
unsigned u:32;
unsigned long long ullb:35;
unsigned long long ull:64;
unsigned char c;
} s = { 1, 1, 1 };
promote(s.ub);
promote(s.u);
promote(s.ullb);
promote(s.ull);
promote(s.c);
printf("\n");
promote((1 ? s.ub : 1));
promote((1 ? s.u : 1));
promote((1 ? s.ullb : 1));
promote((1 ? s.ull : 1));
promote((1 ? s.c : 1));
printf("\n");
promote(s.ub << 1);
promote(s.u << 1);
promote(s.ullb << 1);
promote(s.ull << 1);
promote(s.c << 1);
printf("\n");
promote(+s.ub);
promote(+s.u);
promote(+s.ullb);
promote(+s.ull);
promote(+s.c);
printf("\n");
promote(-s.ub);
promote(-s.u);
promote(-s.ullb);
promote(-s.ull);
promote(-s.c);
printf("\n");
promote(~s.ub);
promote(~s.u);
promote(~s.ullb);
promote(~s.ull);
promote(~s.c);
printf("\n");
promote(!s.ub);
promote(!s.u);
promote(!s.ullb);
promote(!s.ull);
promote(!s.c);
printf("\n");
promote(+(unsigned)s.ub);
promote(-(unsigned)s.ub);
promote(~(unsigned)s.ub);
promote(!(unsigned)s.ub);
return 0;
}