compiler-rt/test/builtins/Unit/negvdi2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_negvdi2
   3 //===-- negvdi2_test.c - Test __negvdi2 -----------------------------------===//
   4 //
   5 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   6 // See https://llvm.org/LICENSE.txt for license information.
   7 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   8 //
   9 //===----------------------------------------------------------------------===//
  10 //
  11 // This file tests __negvdi2 for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18 // Returns: -a
  19
  20 // Effects: aborts if -a overflows
  21
  22 COMPILER_RT_ABI di_int __negvdi2(di_int a);
  23
  24 int test__negvdi2(di_int a)
  25 {
  26     di_int x = __negvdi2(a);
  27     di_int expected = -a;
  28     if (x != expected)
  29         printf("error in __negvdi2(0x%llX) = %lld, expected %lld\n",
  30                a, x, expected);
  31     return x != expected;
  32 }
  33
  34 int main()
  35 {
  36 //     if (test__negvdi2(0x8000000000000000LL))  // should abort
  37 //         return 1;
  38     if (test__negvdi2(0x0000000000000000LL))
  39         return 1;
  40     if (test__negvdi2(0x0000000000000001LL))
  41         return 1;
  42     if (test__negvdi2(0x0000000000000002LL))
  43         return 1;
  44     if (test__negvdi2(0x7FFFFFFFFFFFFFFELL))
  45         return 1;
  46     if (test__negvdi2(0x7FFFFFFFFFFFFFFFLL))
  47         return 1;
  48     if (test__negvdi2(0x8000000000000001LL))
  49         return 1;
  50     if (test__negvdi2(0x8000000000000002LL))
  51         return 1;
  52     if (test__negvdi2(0xFFFFFFFFFFFFFFFELL))
  53         return 1;
  54     if (test__negvdi2(0xFFFFFFFFFFFFFFFFLL))
  55         return 1;
  56
  57     return 0;
  58 }