src/libcompiler_builtins/compiler-rt/test/builtins/Unit/divsi3_test.c

   1 //===-- divsi3_test.c - Test __divsi3 -------------------------------------===//
   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 __divsi3 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 // Returns: a / b
  18
  19 COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b);
  20
  21 int test__divsi3(si_int a, si_int b, si_int expected)
  22 {
  23     si_int x = __divsi3(a, b);
  24     if (x != expected)
  25         printf("error in __divsi3: %d / %d = %d, expected %d\n",
  26                a, b, x, expected);
  27     return x != expected;
  28 }
  29
  30 int main()
  31 {
  32     if (test__divsi3(0, 1, 0))
  33         return 1;
  34     if (test__divsi3(0, -1, 0))
  35         return 1;
  36
  37     if (test__divsi3(2, 1, 2))
  38         return 1;
  39     if (test__divsi3(2, -1, -2))
  40         return 1;
  41     if (test__divsi3(-2, 1, -2))
  42         return 1;
  43     if (test__divsi3(-2, -1, 2))
  44         return 1;
  45
  46     if (test__divsi3(0x80000000, 1, 0x80000000))
  47         return 1;
  48     if (test__divsi3(0x80000000, -1, 0x80000000))
  49         return 1;
  50     if (test__divsi3(0x80000000, -2, 0x40000000))
  51         return 1;
  52     if (test__divsi3(0x80000000, 2, 0xC0000000))
  53         return 1;
  54
  55     return 0;
  56 }