compiler-rt/test/builtins/Unit/udivmodsi4_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_udivmodsi4
   3 //===-- udivmodsi4_test.c - Test __udivmodsi4 -----------------------------===//
   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 __udivmodsi4 for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18 // Returns: a / b
  19
  20 extern COMPILER_RT_ABI su_int __udivmodsi4(su_int a, su_int b, su_int* rem);
  21
  22 int test__udivmodsi4(su_int a, su_int b,
  23                                                 su_int expected_result, su_int expected_rem)
  24 {
  25         su_int rem;
  26     su_int result = __udivmodsi4(a, b, &rem);
  27     if (result != expected_result) {
  28         printf("error in __udivmodsi4: %u / %u = %u, expected %u\n",
  29                a, b, result, expected_result);
  30                 return 1;
  31         }
  32     if (rem != expected_rem) {
  33         printf("error in __udivmodsi4: %u mod %u = %u, expected %u\n",
  34                a, b, rem, expected_rem);
  35                 return 1;
  36         }
  37
  38     return 0;
  39 }
  40
  41
  42 int main()
  43 {
  44     if (test__udivmodsi4(0, 1, 0, 0))
  45         return 1;
  46
  47     if (test__udivmodsi4(2, 1, 2, 0))
  48         return 1;
  49
  50         if (test__udivmodsi4(19, 5, 3, 4))
  51         return 1;
  52
  53         if (test__udivmodsi4(0x80000000, 8, 0x10000000, 0))
  54         return 1;
  55
  56         if (test__udivmodsi4(0x80000003, 8, 0x10000000, 3))
  57         return 1;
  58
  59         return 0;
  60 }