test/Unit/negvdi2_test.c

   1 //===-- negvdi2_test.c - Test __negvdi2 -----------------------------------===//
   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 __negvdi2 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 di_int __negvdi2(di_int a);
  22
  23 int test__negvdi2(di_int a)
  24 {
  25     di_int x = __negvdi2(a);
  26     di_int expected = -a;
  27     if (x != expected)
  28         printf("error in __negvdi2(0x%llX) = %lld, expected %lld\n",
  29                a, x, expected);
  30     return x != expected;
  31 }
  32
  33 int main()
  34 {
  35 //     if (test__negvdi2(0x8000000000000000LL))  // should abort
  36 //         return 1;
  37     if (test__negvdi2(0x0000000000000000LL))
  38         return 1;
  39     if (test__negvdi2(0x0000000000000001LL))
  40         return 1;
  41     if (test__negvdi2(0x0000000000000002LL))
  42         return 1;
  43     if (test__negvdi2(0x7FFFFFFFFFFFFFFELL))
  44         return 1;
  45     if (test__negvdi2(0x7FFFFFFFFFFFFFFFLL))
  46         return 1;
  47     if (test__negvdi2(0x8000000000000001LL))
  48         return 1;
  49     if (test__negvdi2(0x8000000000000002LL))
  50         return 1;
  51     if (test__negvdi2(0xFFFFFFFFFFFFFFFELL))
  52         return 1;
  53     if (test__negvdi2(0xFFFFFFFFFFFFFFFFLL))
  54         return 1;
  55
  56     return 0;
  57 }