compiler-rt/test/builtins/Unit/bswapsi2_test.c

   1 // UNSUPPORTED: armv6m-target-arch
   2 // RUN: %clang_builtins %s %librt -o %t && %run %t
   3 // REQUIRES: librt_has_bswapsi2
   4
   5 #include <math.h>
   6 #include <stdint.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 extern uint32_t __bswapsi2(uint32_t);
  11
  12 int test__bswapsi2(uint32_t a, uint32_t expected) {
  13   uint32_t actual = __bswapsi2(a);
  14   if (actual != expected)
  15     printf("error in test__bswapsi2(0x%0X) = 0x%0X, expected 0x%0X\n", a,
  16            actual, expected);
  17   return actual != expected;
  18 }
  19
  20 int main() {
  21   if (test__bswapsi2(0x12345678, 0x78563412))
  22     return 1;
  23   if (test__bswapsi2(0x00000001, 0x01000000))
  24     return 1;
  25   return 0;
  26 }