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112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
/* integer promotion */
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int printf(const char*, ...);
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#define promote(s) printf(" %ssigned : %s\n", (s) - 100 < 0 ? " " : "un", #s);
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int main (void)
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{
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struct {
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unsigned u3:3;
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unsigned u31:31;
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unsigned u32:32;
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unsigned long ul31:31;
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unsigned long ul32:32;
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unsigned long long ull31:31;
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unsigned long long ull32:32;
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unsigned long long ull33:33;
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unsigned long long ull64:64;
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unsigned char c;
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} s = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
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promote(s.u3);
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promote(s.u31);
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promote(s.u32);
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promote(s.ul31);
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promote(s.ul32);
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promote(s.ull31);
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promote(s.ull32);
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promote(s.ull33);
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promote(s.ull64);
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promote(s.c);
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printf("\n");
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promote((1 ? s.u3 : 1));
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promote((1 ? s.u31 : 1));
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promote((1 ? s.u32 : 1));
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promote((1 ? s.ul31 : 1));
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promote((1 ? s.ul32 : 1));
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promote((1 ? s.ull31 : 1));
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promote((1 ? s.ull32 : 1));
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promote((1 ? s.ull33 : 1));
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promote((1 ? s.ull64 : 1));
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promote((1 ? s.c : 1));
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printf("\n");
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promote(s.u3 << 1);
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promote(s.u31 << 1);
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promote(s.u32 << 1);
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promote(s.ul31 << 1);
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promote(s.ul32 << 1);
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promote(s.ull31 << 1);
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promote(s.ull32 << 1);
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promote(s.ull33 << 1);
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promote(s.ull64 << 1);
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promote(s.c << 1);
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printf("\n");
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promote(+s.u3);
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promote(+s.u31);
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promote(+s.u32);
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promote(+s.ul31);
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promote(+s.ul32);
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promote(+s.ull31);
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promote(+s.ull32);
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promote(+s.ull33);
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promote(+s.ull64);
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promote(+s.c);
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printf("\n");
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promote(-s.u3);
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promote(-s.u31);
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promote(-s.u32);
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promote(-s.ul31);
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promote(-s.ul32);
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promote(-s.ull31);
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promote(-s.ull32);
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promote(-s.ull33);
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promote(-s.ull64);
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promote(-s.c);
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printf("\n");
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promote(~s.u3);
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promote(~s.u31);
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promote(~s.u32);
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promote(~s.ul31);
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promote(~s.ul32);
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promote(~s.ull31);
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promote(~s.ull32);
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promote(~s.ull33);
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promote(~s.ull64);
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promote(~s.c);
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printf("\n");
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promote(!s.u3);
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promote(!s.u31);
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promote(!s.u32);
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promote(!s.ul31);
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promote(!s.ul32);
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promote(!s.ull31);
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promote(!s.ull32);
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promote(!s.ull33);
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promote(!s.ull64);
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promote(!s.c);
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printf("\n");
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promote(+(unsigned)s.u3);
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promote(-(unsigned)s.u3);
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promote(~(unsigned)s.u3);
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promote(!(unsigned)s.u3);
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return 0;
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}
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