compiler-rt/test/builtins/Unit/arm/aeabi_idivmod_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 divmodsi4_test.c
   9
  10 extern du_int __aeabi_idivmod(si_int a, si_int b);
  11
  12 int test__aeabi_idivmod(si_int a, si_int b,
  13                                                 si_int expected_result, si_int expected_rem)
  14 {
  15           si_int rem;
  16     du_int ret = __aeabi_idivmod(a, b);
  17     rem = ret >> 32;
  18     si_int result = ret & 0xFFFFFFFF;
  19     if (result != expected_result) {
  20         printf("error in __aeabi_idivmod: %d / %d = %d, expected %d\n",
  21                a, b, result, expected_result);
  22                 return 1;
  23         }
  24     if (rem != expected_rem) {
  25         printf("error in __aeabi_idivmod: %d mod %d = %d, expected %d\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_idivmod(0, 1, 0, 0))
  39         return 1;
  40     if (test__aeabi_idivmod(0, -1, 0, 0))
  41         return 1;
  42
  43     if (test__aeabi_idivmod(2, 1, 2, 0))
  44         return 1;
  45     if (test__aeabi_idivmod(2, -1, -2, 0))
  46         return 1;
  47     if (test__aeabi_idivmod(-2, 1, -2, 0))
  48         return 1;
  49     if (test__aeabi_idivmod(-2, -1, 2, 0))
  50         return 1;
  51
  52         if (test__aeabi_idivmod(7, 5, 1, 2))
  53         return 1;
  54         if (test__aeabi_idivmod(-7, 5, -1, -2))
  55         return 1;
  56         if (test__aeabi_idivmod(19, 5, 3, 4))
  57         return 1;
  58         if (test__aeabi_idivmod(19, -5, -3, 4))
  59         return 1;
  60
  61         if (test__aeabi_idivmod(0x80000000, 8, 0xf0000000, 0))
  62         return 1;
  63         if (test__aeabi_idivmod(0x80000007, 8, 0xf0000001, -1))
  64         return 1;
  65 #else
  66     printf("skipped\n");
  67 #endif
  68
  69     return 0;
  70 }