compiler-rt/test/builtins/Unit/divmodsi4_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_divmodsi4
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // Returns: a / b
   8
   9 extern COMPILER_RT_ABI si_int __divmodsi4(si_int a, si_int b, si_int* rem);
  10
  11
  12 int test__divmodsi4(si_int a, si_int b,
  13                                                 si_int expected_result, si_int expected_rem)
  14 {
  15         si_int rem;
  16     si_int result = __divmodsi4(a, b, &rem);
  17     if (result != expected_result) {
  18         printf("error in __divmodsi4: %d / %d = %d, expected %d\n",
  19                a, b, result, expected_result);
  20                 return 1;
  21         }
  22     if (rem != expected_rem) {
  23         printf("error in __divmodsi4: %d mod %d = %d, expected %d\n",
  24                a, b, rem, expected_rem);
  25                 return 1;
  26         }
  27
  28     return 0;
  29 }
  30
  31
  32 int main()
  33 {
  34     if (test__divmodsi4(0, 1, 0, 0))
  35         return 1;
  36     if (test__divmodsi4(0, -1, 0, 0))
  37         return 1;
  38
  39     if (test__divmodsi4(2, 1, 2, 0))
  40         return 1;
  41     if (test__divmodsi4(2, -1, -2, 0))
  42         return 1;
  43     if (test__divmodsi4(-2, 1, -2, 0))
  44         return 1;
  45     if (test__divmodsi4(-2, -1, 2, 0))
  46         return 1;
  47
  48         if (test__divmodsi4(7, 5, 1, 2))
  49         return 1;
  50         if (test__divmodsi4(-7, 5, -1, -2))
  51         return 1;
  52         if (test__divmodsi4(19, 5, 3, 4))
  53         return 1;
  54         if (test__divmodsi4(19, -5, -3, 4))
  55         return 1;
  56
  57         if (test__divmodsi4(0x80000000, 8, 0xf0000000, 0))
  58         return 1;
  59         if (test__divmodsi4(0x80000007, 8, 0xf0000001, -1))
  60         return 1;
  61
  62     return 0;
  63 }