compiler-rt/test/builtins/Unit/divdi3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_divdi3
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // Returns: a / b
   8
   9 COMPILER_RT_ABI di_int __divdi3(di_int a, di_int b);
  10
  11 int test__divdi3(di_int a, di_int b, di_int expected)
  12 {
  13     di_int x = __divdi3(a, b);
  14     if (x != expected)
  15         printf("error in __divdi3: %lld / %lld = %lld, expected %lld\n",
  16                a, b, x, expected);
  17     return x != expected;
  18 }
  19
  20 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  21
  22 int main()
  23 {
  24     if (test__divdi3(0, 1, 0))
  25         return 1;
  26     if (test__divdi3(0, -1, 0))
  27         return 1;
  28
  29     if (test__divdi3(2, 1, 2))
  30         return 1;
  31     if (test__divdi3(2, -1, -2))
  32         return 1;
  33     if (test__divdi3(-2, 1, -2))
  34         return 1;
  35     if (test__divdi3(-2, -1, 2))
  36         return 1;
  37
  38     if (test__divdi3(0x8000000000000000LL, 1, 0x8000000000000000LL))
  39         return 1;
  40     if (test__divdi3(0x8000000000000000LL, -1, 0x8000000000000000LL))
  41         return 1;
  42     if (test__divdi3(0x8000000000000000LL, -2, 0x4000000000000000LL))
  43         return 1;
  44     if (test__divdi3(0x8000000000000000LL, 2, 0xC000000000000000LL))
  45         return 1;
  46
  47     return 0;
  48 }