compiler-rt/test/builtins/Unit/modsi3_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_modsi3
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 /* Returns: a % b */
   8
   9 COMPILER_RT_ABI si_int __modsi3(si_int a, si_int b);
  10
  11 int test__modsi3(si_int a, si_int b, si_int expected) {
  12     si_int x = __modsi3(a, b);
  13     if (x != expected)
  14         fprintf(stderr, "error in __modsi3: %d %% %d = %d, expected %d\n",
  15                a, b, x, expected);
  16     return x != expected;
  17 }
  18
  19 int main() {
  20     if (test__modsi3(0, 1, 0))
  21         return 1;
  22     if (test__modsi3(0, -1, 0))
  23         return 1;
  24
  25     if (test__modsi3(5, 3, 2))
  26         return 1;
  27     if (test__modsi3(5, -3, 2))
  28         return 1;
  29     if (test__modsi3(-5, 3, -2))
  30         return 1;
  31     if (test__modsi3(-5, -3, -2))
  32         return 1;
  33
  34     if (test__modsi3(0x80000000, 1, 0x0))
  35         return 1;
  36     if (test__modsi3(0x80000000, 2, 0x0))
  37         return 1;
  38     if (test__modsi3(0x80000000, -2, 0x0))
  39         return 1;
  40     if (test__modsi3(0x80000000, 3, -2))
  41         return 1;
  42     if (test__modsi3(0x80000000, -3, -2))
  43         return 1;
  44
  45     return 0;
  46 }