src/libcompiler_builtins/compiler-rt/test/builtins/Unit/negvsi2_test.c

   1 //===-- negvsi2_test.c - Test __negvsi2 -----------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file tests __negvsi2 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 // Returns: -a
  18
  19 // Effects: aborts if -a overflows
  20
  21 COMPILER_RT_ABI si_int __negvsi2(si_int a);
  22
  23 int test__negvsi2(si_int a)
  24 {
  25     si_int x = __negvsi2(a);
  26     si_int expected = -a;
  27     if (x != expected)
  28         printf("error in __negvsi2(0x%X) = %d, expected %d\n", a, x, expected);
  29     return x != expected;
  30 }
  31
  32 int main()
  33 {
  34 //     if (test__negvsi2(0x80000000))  // should abort
  35 //         return 1;
  36     if (test__negvsi2(0x00000000))
  37         return 1;
  38     if (test__negvsi2(0x00000001))
  39         return 1;
  40     if (test__negvsi2(0x00000002))
  41         return 1;
  42     if (test__negvsi2(0x7FFFFFFE))
  43         return 1;
  44     if (test__negvsi2(0x7FFFFFFF))
  45         return 1;
  46     if (test__negvsi2(0x80000001))
  47         return 1;
  48     if (test__negvsi2(0x80000002))
  49         return 1;
  50     if (test__negvsi2(0xFFFFFFFE))
  51         return 1;
  52     if (test__negvsi2(0xFFFFFFFF))
  53         return 1;
  54
  55     return 0;
  56 }