test/Unit/udivdi3_test.c

   1 //===-- udivdi3_test.c - Test __udivdi3 -----------------------------------===//
   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 __udivdi3 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 // Returns: a / b
  18
  19 du_int __udivdi3(du_int a, du_int b);
  20
  21 int test__udivdi3(du_int a, du_int b, du_int expected_q)
  22 {
  23     du_int q = __udivdi3(a, b);
  24     if (q != expected_q)
  25         printf("error in __udivdi3: %lld / %lld = %lld, expected %lld\n",
  26                a, b, q, expected_q);
  27     return q != expected_q;
  28 }
  29
  30 int main()
  31 {
  32     if (test__udivdi3(0, 1, 0))
  33         return 1;
  34     if (test__udivdi3(2, 1, 2))
  35         return 1;
  36     if (test__udivdi3(0x8000000000000000uLL, 1, 0x8000000000000000uLL))
  37         return 1;
  38     if (test__udivdi3(0x8000000000000000uLL, 2, 0x4000000000000000uLL))
  39         return 1;
  40     if (test__udivdi3(0xFFFFFFFFFFFFFFFFuLL, 2, 0x7FFFFFFFFFFFFFFFuLL))
  41         return 1;
  42
  43     return 0;
  44 }