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

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_divsi3
   3
   4 #include "int_lib.h"
   5 #include <stdio.h>
   6
   7 // Returns: a / b
   8
   9 COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b);
  10
  11 int test__divsi3(si_int a, si_int b, si_int expected)
  12 {
  13     si_int x = __divsi3(a, b);
  14     if (x != expected)
  15         printf("error in __divsi3: %d / %d = %d, expected %d\n",
  16                a, b, x, expected);
  17     return x != expected;
  18 }
  19
  20 int main()
  21 {
  22     if (test__divsi3(0, 1, 0))
  23         return 1;
  24     if (test__divsi3(0, -1, 0))
  25         return 1;
  26
  27     if (test__divsi3(2, 1, 2))
  28         return 1;
  29     if (test__divsi3(2, -1, -2))
  30         return 1;
  31     if (test__divsi3(-2, 1, -2))
  32         return 1;
  33     if (test__divsi3(-2, -1, 2))
  34         return 1;
  35
  36     if (test__divsi3(0x80000000, 1, 0x80000000))
  37         return 1;
  38     if (test__divsi3(0x80000000, -1, 0x80000000))
  39         return 1;
  40     if (test__divsi3(0x80000000, -2, 0x40000000))
  41         return 1;
  42     if (test__divsi3(0x80000000, 2, 0xC0000000))
  43         return 1;
  44
  45     return 0;
  46 }