1extern void abort(void); 2 3int test1(char x) 4{ 5 return x/100 == 3; 6} 7 8int test1u(unsigned char x) 9{ 10 return x/100 == 3; 11} 12 13int test2(char x) 14{ 15 return x/100 != 3; 16} 17 18int test2u(unsigned char x) 19{ 20 return x/100 != 3; 21} 22 23int test3(char x) 24{ 25 return x/100 < 3; 26} 27 28int test3u(unsigned char x) 29{ 30 return x/100 < 3; 31} 32 33int test4(char x) 34{ 35 return x/100 <= 3; 36} 37 38int test4u(unsigned char x) 39{ 40 return x/100 <= 3; 41} 42 43int test5(char x) 44{ 45 return x/100 > 3; 46} 47 48int test5u(unsigned char x) 49{ 50 return x/100 > 3; 51} 52 53int test6(char x) 54{ 55 return x/100 >= 3; 56} 57 58int test6u(unsigned char x) 59{ 60 return x/100 >= 3; 61} 62 63 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