test/Unit/udivmodsi4_test.c

   1 //===-- udivmodsi4_test.c - Test __udivmodsi4 -----------------------------===//
   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 __udivmodsi4 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 // Returns: a / b
  18
  19 extern su_int __udivmodsi4(su_int a, su_int b, su_int* rem);
  20
  21 int test__udivmodsi4(su_int a, su_int b,
  22                                                 su_int expected_result, su_int expected_rem)
  23 {
  24         su_int rem;
  25     su_int result = __udivmodsi4(a, b, &rem);
  26     if (result != expected_result) {
  27         printf("error in __udivmodsi4: %u / %u = %u, expected %u\n",
  28                a, b, result, expected_result);
  29                 return 1;
  30         }
  31     if (rem != expected_rem) {
  32         printf("error in __udivmodsi4: %u mod %u = %u, expected %u\n",
  33                a, b, rem, expected_rem);
  34                 return 1;
  35         }
  36
  37     return 0;
  38 }
  39
  40
  41 int main()
  42 {
  43     if (test__udivmodsi4(0, 1, 0, 0))
  44         return 1;
  45
  46     if (test__udivmodsi4(2, 1, 2, 0))
  47         return 1;
  48
  49         if (test__udivmodsi4(19, 5, 3, 4))
  50         return 1;
  51
  52         if (test__udivmodsi4(0x80000000, 8, 0x10000000, 0))
  53         return 1;
  54
  55         if (test__udivmodsi4(0x80000003, 8, 0x10000000, 3))
  56         return 1;
  57
  58         return 0;
  59 }