gcc/testsuite/gcc.c-torture/execute/20040409-3.c

   1 #include <limits.h>
   2
   3 extern void abort ();
   4
   5 int test1(int x)
   6 {
   7   return ~(x ^ INT_MIN);
   8 }
   9
  10 unsigned int test1u(unsigned int x)
  11 {
  12   return ~(x ^ (unsigned int)INT_MIN);
  13 }
  14
  15 int test2(int x)
  16 {
  17   return ~(x + INT_MIN);
  18 }
  19
  20 unsigned int test2u(unsigned int x)
  21 {
  22   return ~(x + (unsigned int)INT_MIN);
  23 }
  24
  25 int test3(int x)
  26 {
  27   return ~(x - INT_MIN);
  28 }
  29
  30 unsigned int test3u(unsigned int x)
  31 {
  32   return ~(x - (unsigned int)INT_MIN);
  33 }
  34
  35 int test4(int x)
  36 {
  37   int y = INT_MIN;
  38   return ~(x ^ y);
  39 }
  40
  41 unsigned int test4u(unsigned int x)
  42 {
  43   unsigned int y = (unsigned int)INT_MIN;
  44   return ~(x ^ y);
  45 }
  46
  47 int test5(int x)
  48 {
  49   int y = INT_MIN;
  50   return ~(x + y);
  51 }
  52
  53 unsigned int test5u(unsigned int x)
  54 {
  55   unsigned int y = (unsigned int)INT_MIN;
  56   return ~(x + y);
  57 }
  58
  59 int test6(int x)
  60 {
  61   int y = INT_MIN;
  62   return ~(x - y);
  63 }
  64
  65 unsigned int test6u(unsigned int x)
  66 {
  67   unsigned int y = (unsigned int)INT_MIN;
  68   return ~(x - y);
  69 }
  70
  71
  72
  73 void test(int a, int b)
  74 {
  75   if (test1(a) != b)
  76     abort();
  77   if (test2(a) != b)
  78     abort();
  79   if (test3(a) != b)
  80     abort();
  81   if (test4(a) != b)
  82     abort();
  83   if (test5(a) != b)
  84     abort();
  85   if (test6(a) != b)
  86     abort();
  87 }
  88
  89 void testu(unsigned int a, unsigned int b)
  90 {
  91   if (test1u(a) != b)
  92     abort();
  93   if (test2u(a) != b)
  94     abort();
  95   if (test3u(a) != b)
  96     abort();
  97   if (test4u(a) != b)
  98     abort();
  99   if (test5u(a) != b)
 100     abort();
 101   if (test6u(a) != b)
 102     abort();
 103 }
 104
 105
 106 int main()
 107 {
 108 #if INT_MAX == 2147483647
 109   test(0x00000000,0x7fffffff);
 110   test(0x80000000,0xffffffff);
 111   test(0x12345678,0x6dcba987);
 112   test(0x92345678,0xedcba987);
 113   test(0x7fffffff,0x00000000);
 114   test(0xffffffff,0x80000000);
 115
 116   testu(0x00000000,0x7fffffff);
 117   testu(0x80000000,0xffffffff);
 118   testu(0x12345678,0x6dcba987);
 119   testu(0x92345678,0xedcba987);
 120   testu(0x7fffffff,0x00000000);
 121   testu(0xffffffff,0x80000000);
 122 #endif
 123
 124 #if INT_MAX == 32767
 125   test(0x0000,0x7fff);
 126   test(0x8000,0xffff);
 127   test(0x1234,0x6dcb);
 128   test(0x9234,0xedcb);
 129   test(0x7fff,0x0000);
 130   test(0xffff,0x8000);
 131
 132   testu(0x0000,0x7fff);
 133   testu(0x8000,0xffff);
 134   testu(0x1234,0x6dcb);
 135   testu(0x9234,0xedcb);
 136   testu(0x7fff,0x0000);
 137   testu(0xffff,0x8000);
 138 #endif
 139
 140   return 0;
 141 }
 142