cosmopolitan/third_party/chibicc/test/cast_test.c

#include "third_party/chibicc/test/test.h"

int main() {
  ASSERT(131585, (int)8590066177);
  ASSERT(513, (short)8590066177);
  ASSERT(1, (char)8590066177);
  ASSERT(1, (long)1);
  ASSERT(0, (long)&*(int *)0);
  ASSERT(513, ({
           int x = 512;
           *(char *)&x = 1;
           x;
         }));
  ASSERT(5, ({
           int x = 5;
           long y = (long)&x;
           *(int *)y;
         }));

  (void)1;

  ASSERT(-1, (char)255);
  ASSERT(-1, (signed char)255);
  ASSERT(255, (unsigned char)255);
  ASSERT(-1, (short)65535);
  ASSERT(65535, (unsigned short)65535);
  ASSERT(-1, (int)0xffffffff);
  ASSERT(0xffffffff, (unsigned)0xffffffff);

  ASSERT(1, -1 < 1);
  ASSERT(0, -1 < (unsigned)1);
  ASSERT(254, (char)127 + (char)127);
  ASSERT(65534, (short)32767 + (short)32767);
  ASSERT(-1, -1 >> 1);
  ASSERT(-1, (unsigned long)-1);
  ASSERT(2147483647, ((unsigned)-1) >> 1);
  ASSERT(-50, (-100) / 2);
  ASSERT(2147483598, ((unsigned)-100) / 2);
  ASSERT(9223372036854775758, ((unsigned long)-100) / 2);
  ASSERT(0, ((long)-1) / (unsigned)100);
  ASSERT(-2, (-100) % 7);
  ASSERT(2, ((unsigned)-100) % 7);
  ASSERT(6, ((unsigned long)-100) % 9);

  ASSERT(65535, (int)(unsigned short)65535);
  ASSERT(65535, ({
           unsigned short x = 65535;
           x;
         }));
  ASSERT(65535, ({
           unsigned short x = 65535;
           (int)x;
         }));

  ASSERT(-1, ({
    typedef short T;
    T x = 65535;
    (int)x;
  }));
  ASSERT(65535, ({
           typedef unsigned short T;
           T x = 65535;
           (int)x;
         }));

  ASSERT(0, (_Bool)0.0);
  ASSERT(1, (_Bool)0.1);
  ASSERT(3, (char)3.0);
  ASSERT(1000, (short)1000.3);
  ASSERT(3, (int)3.99);
  ASSERT(2000000000000000, (long)2e15);
  ASSERT(3, (float)3.5);
  ASSERT(5, (double)(float)5.5);
  ASSERT(3, (float)3);
  ASSERT(3, (double)3);
  ASSERT(3, (float)3L);
  ASSERT(3, (double)3L);

  return 0;
}