sys/external/bsd/compiler_rt/dist/test/Unit/divti3_test.c

   1 //===-- divti3_test.c - Test __divti3 -------------------------------------===//
   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 __divti3 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #if __x86_64
  15
  16 #include "int_lib.h"
  17 #include <stdio.h>
  18
  19 // Returns: a / b
  20
  21 ti_int __divti3(ti_int a, ti_int b);
  22
  23 int test__divti3(ti_int a, ti_int b, ti_int expected)
  24 {
  25     ti_int x = __divti3(a, b);
  26     if (x != expected)
  27     {
  28         twords at;
  29         at.all = a;
  30         twords bt;
  31         bt.all = b;
  32         twords xt;
  33         xt.all = x;
  34         twords expectedt;
  35         expectedt.all = expected;
  36         printf("error in __divti3: 0x%llX%.16llX / 0x%llX%.16llX = "
  37                "0x%llX%.16llX, expected 0x%llX%.16llX\n",
  38                at.s.high, at.s.low, bt.s.high, bt.s.low, xt.s.high, xt.s.low,
  39                expectedt.s.high, expectedt.s.low);
  40     }
  41     return x != expected;
  42 }
  43
  44 char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
  45
  46 #endif
  47
  48 int main()
  49 {
  50 #if __x86_64
  51     if (test__divti3(0, 1, 0))
  52         return 1;
  53     if (test__divti3(0, -1, 0))
  54         return 1;
  55
  56     if (test__divti3(2, 1, 2))
  57         return 1;
  58     if (test__divti3(2, -1, -2))
  59         return 1;
  60     if (test__divti3(-2, 1, -2))
  61         return 1;
  62     if (test__divti3(-2, -1, 2))
  63         return 1;
  64
  65     if (test__divti3(make_ti(0x8000000000000000LL, 0), 1, make_ti(0x8000000000000000LL, 0)))
  66         return 1;
  67     if (test__divti3(make_ti(0x8000000000000000LL, 0), -1, make_ti(0x8000000000000000LL, 0)))
  68         return 1;
  69     if (test__divti3(make_ti(0x8000000000000000LL, 0), -2, make_ti(0x4000000000000000LL, 0)))
  70         return 1;
  71     if (test__divti3(make_ti(0x8000000000000000LL, 0), 2, make_ti(0xC000000000000000LL, 0)))
  72         return 1;
  73
  74 #else
  75     printf("skipped\n");
  76 #endif
  77     return 0;
  78 }