validation/optim/fact-xor-shift.c

   1 typedef unsigned int uint;
   2 typedef   signed int sint;
   3
   4
   5 uint fact_xor_shl(uint a, uint b, uint s)
   6 {
   7         return ((a << s) ^ (b << s)) == ((a ^ b) << s);
   8 }
   9
  10 uint fact_xor_lsr(uint a, uint b, uint s)
  11 {
  12         return ((a >> s) ^ (b >> s)) == ((a ^ b) >> s);
  13 }
  14
  15 sint fact_xor_asr(sint a, sint b, sint s)
  16 {
  17         return ((a >> s) ^ (b >> s)) == ((a ^ b) >> s);
  18 }
  19
  20 /*
  21  * check-name: fact-xor-shift
  22  * check-command: test-linearize -Wno-decl $file
  23  *
  24  * check-output-ignore
  25  * check-output-returns: 1
  26  */