compiler-rt/test/builtins/Unit/udivdi3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_udivdi3
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // Returns: a / b
   8
   9 COMPILER_RT_ABI du_int __udivdi3(du_int a, du_int b);
  10
  11 int test__udivdi3(du_int a, du_int b, du_int expected_q)
  12 {
  13     du_int q = __udivdi3(a, b);
  14     if (q != expected_q)
  15         printf("error in __udivdi3: %lld / %lld = %lld, expected %lld\n",
  16                a, b, q, expected_q);
  17     return q != expected_q;
  18 }
  19
  20 int main()
  21 {
  22     if (test__udivdi3(0, 1, 0))
  23         return 1;
  24     if (test__udivdi3(2, 1, 2))
  25         return 1;
  26     if (test__udivdi3(0x8000000000000000uLL, 1, 0x8000000000000000uLL))
  27         return 1;
  28     if (test__udivdi3(0x8000000000000000uLL, 2, 0x4000000000000000uLL))
  29         return 1;
  30     if (test__udivdi3(0xFFFFFFFFFFFFFFFFuLL, 2, 0x7FFFFFFFFFFFFFFFuLL))
  31         return 1;
  32
  33     return 0;
  34 }