compiler-rt/test/builtins/Unit/negdi2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_negdi2
   3 //===-- negdi2_test.c - Test __negdi2 -------------------------------------===//
   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 __negdi2 for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18 // Returns: -a
  19
  20 COMPILER_RT_ABI di_int __negdi2(di_int a);
  21
  22 int test__negdi2(di_int a, di_int expected)
  23 {
  24     di_int x = __negdi2(a);
  25     if (x != expected)
  26         printf("error in __negdi2: -0x%llX = 0x%llX, expected 0x%llX\n",
  27                a, x, expected);
  28     return x != expected;
  29 }
  30
  31 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  32
  33 int main()
  34 {
  35     if (test__negdi2(0, 0))
  36         return 1;
  37     if (test__negdi2(1, -1))
  38         return 1;
  39     if (test__negdi2(-1, 1))
  40         return 1;
  41     if (test__negdi2(2, -2))
  42         return 1;
  43     if (test__negdi2(-2, 2))
  44         return 1;
  45     if (test__negdi2(3, -3))
  46         return 1;
  47     if (test__negdi2(-3, 3))
  48         return 1;
  49     if (test__negdi2(0x00000000FFFFFFFELL, 0xFFFFFFFF00000002LL))
  50         return 1;
  51     if (test__negdi2(0xFFFFFFFF00000002LL, 0x00000000FFFFFFFELL))
  52         return 1;
  53     if (test__negdi2(0x00000000FFFFFFFFLL, 0xFFFFFFFF00000001LL))
  54         return 1;
  55     if (test__negdi2(0xFFFFFFFF00000001LL, 0x00000000FFFFFFFFLL))
  56         return 1;
  57     if (test__negdi2(0x0000000100000000LL, 0xFFFFFFFF00000000LL))
  58         return 1;
  59     if (test__negdi2(0xFFFFFFFF00000000LL, 0x0000000100000000LL))
  60         return 1;
  61     if (test__negdi2(0x0000000200000000LL, 0xFFFFFFFE00000000LL))
  62         return 1;
  63     if (test__negdi2(0xFFFFFFFE00000000LL, 0x0000000200000000LL))
  64         return 1;
  65     if (test__negdi2(0x0000000300000000LL, 0xFFFFFFFD00000000LL))
  66         return 1;
  67     if (test__negdi2(0xFFFFFFFD00000000LL, 0x0000000300000000LL))
  68         return 1;
  69     if (test__negdi2(0x8000000000000000LL, 0x8000000000000000LL))
  70         return 1;
  71     if (test__negdi2(0x8000000000000001LL, 0x7FFFFFFFFFFFFFFFLL))
  72         return 1;
  73     if (test__negdi2(0x7FFFFFFFFFFFFFFFLL, 0x8000000000000001LL))
  74         return 1;
  75     if (test__negdi2(0xFFFFFFFE00000000LL, 0x0000000200000000LL))
  76         return 1;
  77     if (test__negdi2(0x0000000200000000LL, 0xFFFFFFFE00000000LL))
  78         return 1;
  79     if (test__negdi2(0xFFFFFFFF00000000LL, 0x0000000100000000LL))
  80         return 1;
  81     if (test__negdi2(0x0000000100000000LL, 0xFFFFFFFF00000000LL))
  82         return 1;
  83
  84    return 0;
  85 }