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

   1 /* ===-- modsi3_test.c - Test __modsi3 -------------------------------------===
   2  *
   3  *                     The LLVM Compiler Infrastructure
   4  *
   5  * This file is dual licensed under the MIT and the University of Illinois Open
   6  * Source Licenses. See LICENSE.TXT for details.
   7  *
   8  * ===----------------------------------------------------------------------===
   9  *
  10  * This file tests __modsi3 for the compiler_rt library.
  11  *
  12  * ===----------------------------------------------------------------------===
  13  */
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18 /* Returns: a % b */
  19
  20 COMPILER_RT_ABI si_int __modsi3(si_int a, si_int b);
  21
  22 int test__modsi3(si_int a, si_int b, si_int expected) {
  23     si_int x = __modsi3(a, b);
  24     if (x != expected)
  25         fprintf(stderr, "error in __modsi3: %d %% %d = %d, expected %d\n",
  26                a, b, x, expected);
  27     return x != expected;
  28 }
  29
  30 int main() {
  31     if (test__modsi3(0, 1, 0))
  32         return 1;
  33     if (test__modsi3(0, -1, 0))
  34         return 1;
  35
  36     if (test__modsi3(5, 3, 2))
  37         return 1;
  38     if (test__modsi3(5, -3, 2))
  39         return 1;
  40     if (test__modsi3(-5, 3, -2))
  41         return 1;
  42     if (test__modsi3(-5, -3, -2))
  43         return 1;
  44
  45     if (test__modsi3(0x80000000, 1, 0x0))
  46         return 1;
  47     if (test__modsi3(0x80000000, 2, 0x0))
  48         return 1;
  49     if (test__modsi3(0x80000000, -2, 0x0))
  50         return 1;
  51     if (test__modsi3(0x80000000, 3, -2))
  52         return 1;
  53     if (test__modsi3(0x80000000, -3, -2))
  54         return 1;
  55
  56     return 0;
  57 }