compiler-rt/test/builtins/Unit/arm/aeabi_uidivmod_test.c

   1 // REQUIRES: arm-target-arch || armv6m-target-arch
   2 // RUN: %clang_builtins %s %librt -o %t && %run %t
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 #if __arm__
   8 // Based on udivmodsi4_test.c
   9
  10 extern du_int __aeabi_uidivmod(su_int a, su_int b);
  11
  12 int test__aeabi_uidivmod(su_int a, su_int b,
  13                                                 su_int expected_result, su_int expected_rem)
  14 {
  15     du_int ret = __aeabi_uidivmod(a, b);
  16     su_int rem = ret >> 32;
  17     si_int result = ret & 0xFFFFFFFF;
  18
  19     if (result != expected_result) {
  20         printf("error in __aeabi_uidivmod: %u / %u = %u, expected %u\n",
  21                a, b, result, expected_result);
  22                 return 1;
  23         }
  24     if (rem != expected_rem) {
  25         printf("error in __aeabi_uidivmod: %u mod %u = %u, expected %u\n",
  26                a, b, rem, expected_rem);
  27                 return 1;
  28         }
  29
  30     return 0;
  31 }
  32 #endif
  33
  34
  35 int main()
  36 {
  37 #if __arm__
  38     if (test__aeabi_uidivmod(0, 1, 0, 0))
  39         return 1;
  40
  41     if (test__aeabi_uidivmod(2, 1, 2, 0))
  42         return 1;
  43
  44         if (test__aeabi_uidivmod(19, 5, 3, 4))
  45         return 1;
  46
  47         if (test__aeabi_uidivmod(0x80000000, 8, 0x10000000, 0))
  48         return 1;
  49
  50         if (test__aeabi_uidivmod(0x80000003, 8, 0x10000000, 3))
  51         return 1;
  52 #else
  53     printf("skipped\n");
  54 #endif
  55
  56         return 0;
  57 }