kit

kit
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builtin_13_atomic_fetch_xor.c (186B)

      1 int test_main(void) {
      2   int x = 0x55; /* 0101 0101 = 85 */
      3   int prior = __atomic_fetch_xor(&x, 0x7F, __ATOMIC_SEQ_CST);
      4   /* x = 0x55 ^ 0x7F = 0x2A = 42 */
      5   (void)prior;
      6   return x;
      7 }