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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_udivmodsi4
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // Returns: a / b
   8
   9 extern COMPILER_RT_ABI su_int __udivmodsi4(su_int a, su_int b, su_int* rem);
  10
  11 int test__udivmodsi4(su_int a, su_int b,
  12                                                 su_int expected_result, su_int expected_rem)
  13 {
  14         su_int rem;
  15     su_int result = __udivmodsi4(a, b, &rem);
  16     if (result != expected_result) {
  17         printf("error in __udivmodsi4: %u / %u = %u, expected %u\n",
  18                a, b, result, expected_result);
  19                 return 1;
  20         }
  21     if (rem != expected_rem) {
  22         printf("error in __udivmodsi4: %u mod %u = %u, expected %u\n",
  23                a, b, rem, expected_rem);
  24                 return 1;
  25         }
  26
  27     return 0;
  28 }
  29
  30
  31 int main()
  32 {
  33     if (test__udivmodsi4(0, 1, 0, 0))
  34         return 1;
  35
  36     if (test__udivmodsi4(2, 1, 2, 0))
  37         return 1;
  38
  39         if (test__udivmodsi4(19, 5, 3, 4))
  40         return 1;
  41
  42         if (test__udivmodsi4(0x80000000, 8, 0x10000000, 0))
  43         return 1;
  44
  45         if (test__udivmodsi4(0x80000003, 8, 0x10000000, 3))
  46         return 1;
  47
  48         return 0;
  49 }