1 extern void abort(void); 2 test1(char x)3int test1(char x) 4 { 5 return x/100 == 3; 6 } 7 test1u(unsigned char x)8int test1u(unsigned char x) 9 { 10 return x/100 == 3; 11 } 12 test2(char x)13int test2(char x) 14 { 15 return x/100 != 3; 16 } 17 test2u(unsigned char x)18int test2u(unsigned char x) 19 { 20 return x/100 != 3; 21 } 22 test3(char x)23int test3(char x) 24 { 25 return x/100 < 3; 26 } 27 test3u(unsigned char x)28int test3u(unsigned char x) 29 { 30 return x/100 < 3; 31 } 32 test4(char x)33int test4(char x) 34 { 35 return x/100 <= 3; 36 } 37 test4u(unsigned char x)38int test4u(unsigned char x) 39 { 40 return x/100 <= 3; 41 } 42 test5(char x)43int test5(char x) 44 { 45 return x/100 > 3; 46 } 47 test5u(unsigned char x)48int test5u(unsigned char x) 49 { 50 return x/100 > 3; 51 } 52 test6(char x)53int test6(char x) 54 { 55 return x/100 >= 3; 56 } 57 test6u(unsigned char x)58int test6u(unsigned char x) 59 { 60 return x/100 >= 3; 61 } 62 63 main()64int main() 65 { 66 int c; 67 68 for (c=-128; c<256; c++) 69 { 70 if (test1(c) != 0) 71 abort (); 72 if (test1u(c) != 0) 73 abort (); 74 if (test2(c) != 1) 75 abort (); 76 if (test2u(c) != 1) 77 abort (); 78 if (test3(c) != 1) 79 abort (); 80 if (test3u(c) != 1) 81 abort (); 82 if (test4(c) != 1) 83 abort (); 84 if (test4u(c) != 1) 85 abort (); 86 if (test5(c) != 0) 87 abort (); 88 if (test5u(c) != 0) 89 abort (); 90 if (test6(c) != 0) 91 abort (); 92 if (test6u(c) != 0) 93 abort (); 94 } 95 return 0; 96 } 97 98