sdcc/support/regression/tests/swap_add.c

   1 /** Swap test using 'addition' instead of usual 'or'
   2 */
   3
   4 #include <testfwk.h>
   5 #ifdef __sun__
   6 #include <inttypes.h>
   7 #else
   8 #include <stdint.h>
   9 #endif
  10
  11 uint8_t
  12 swap_add_8(uint8_t value)
  13 {
  14     value = (value << 4) + (value >> 4);
  15     return value;
  16 }
  17
  18 #define SWAP_ADD_8(value) (((value << 4) & 0xF0u) | ((value >> 4) & 0x0Fu))
  19 #define SWAP_ADD_8_EQUALS(value) (swap_add_8(value) == SWAP_ADD_8(value))
  20 static void
  21 testSwapAdd(void)
  22 {
  23 #ifndef __SDCC_pdk15 // Bug
  24     ASSERT(SWAP_ADD_8_EQUALS(0x01));
  25     ASSERT(SWAP_ADD_8_EQUALS(0x02));
  26     ASSERT(SWAP_ADD_8_EQUALS(0x04));
  27     ASSERT(SWAP_ADD_8_EQUALS(0x08));
  28
  29     ASSERT(SWAP_ADD_8_EQUALS(0x10));
  30     ASSERT(SWAP_ADD_8_EQUALS(0x20));
  31     ASSERT(SWAP_ADD_8_EQUALS(0x40));
  32     ASSERT(SWAP_ADD_8_EQUALS(0x80));
  33
  34     ASSERT(SWAP_ADD_8_EQUALS(0x0F));
  35     ASSERT(SWAP_ADD_8_EQUALS(0xF0));
  36     ASSERT(SWAP_ADD_8_EQUALS(0x3C));
  37     ASSERT(SWAP_ADD_8_EQUALS(0xC3));
  38 #endif
  39 }
  40