compiler-rt/test/builtins/Unit/bswapdi2_test.c

   1 // UNSUPPORTED: armv6m-target-arch
   2 // RUN: %clang_builtins %s %librt -o %t && %run %t
   3 // REQUIRES: librt_has_bswapdi2
   4 //===-- bswapdi2_test.c - Test __bswapdi2 ---------------------------------===//
   5 //
   6 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   7 // See https://llvm.org/LICENSE.txt for license information.
   8 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   9 //
  10 //===----------------------------------------------------------------------===//
  11 //
  12 // This file tests __bswapdi2 for the compiler_rt library.
  13 //
  14 //===----------------------------------------------------------------------===//
  15
  16 #include <math.h>
  17 #include <stdint.h>
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20
  21 extern uint64_t __bswapdi2(uint64_t);
  22
  23 int test__bswapdi2(uint64_t a, uint64_t expected) {
  24   uint64_t actual = __bswapdi2(a);
  25   if (actual != expected)
  26     printf("error in test__bswapsi2(0x%0llX) = 0x%0llX, expected 0x%0llX\n", a,
  27            actual, expected);
  28   return actual != expected;
  29 }
  30
  31 int main() {
  32   if (test__bswapdi2(0x123456789ABCDEF0LL, 0xF0DEBC9A78563412LL))
  33     return 1;
  34   if (test__bswapdi2(0x0000000100000002LL, 0x0200000001000000LL))
  35     return 1;
  36   return 0;
  37 }