test/Unit/modti3_test.c

   1 //===-- modti3_test.c - Test __modti3 -------------------------------------===//
   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 __modti3 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 __modti3(ti_int a, ti_int b);
  22
  23 int test__modti3(ti_int a, ti_int b, ti_int expected)
  24 {
  25     ti_int x = __modti3(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 __modti3: 0x%.16llX%.16llX %% 0x%.16llX%.16llX = "
  37                "0x%.16llX%.16llX, expected 0x%.16llX%.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__modti3(0, 1, 0))
  52         return 1;
  53     if (test__modti3(0, -1, 0))
  54         return 1;
  55
  56     if (test__modti3(5, 3, 2))
  57         return 1;
  58     if (test__modti3(5, -3, 2))
  59         return 1;
  60     if (test__modti3(-5, 3, -2))
  61         return 1;
  62     if (test__modti3(-5, -3, -2))
  63         return 1;
  64
  65     if (test__modti3(0x8000000000000000LL, 1, 0x0LL))
  66         return 1;
  67     if (test__modti3(0x8000000000000000LL, -1, 0x0LL))
  68         return 1;
  69     if (test__modti3(0x8000000000000000LL, 2, 0x0LL))
  70         return 1;
  71     if (test__modti3(0x8000000000000000LL, -2, 0x0LL))
  72         return 1;
  73     if (test__modti3(0x8000000000000000LL, 3, 2))
  74         return 1;
  75     if (test__modti3(0x8000000000000000LL, -3, 2))
  76         return 1;
  77
  78     if (test__modti3(make_ti(0x8000000000000000LL, 0), 1, 0x0LL))
  79         return 1;
  80     if (test__modti3(make_ti(0x8000000000000000LL, 0), -1, 0x0LL))
  81         return 1;
  82     if (test__modti3(make_ti(0x8000000000000000LL, 0), 2, 0x0LL))
  83         return 1;
  84     if (test__modti3(make_ti(0x8000000000000000LL, 0), -2, 0x0LL))
  85         return 1;
  86     if (test__modti3(make_ti(0x8000000000000000LL, 0), 3, -2))
  87         return 1;
  88     if (test__modti3(make_ti(0x8000000000000000LL, 0), -3, -2))
  89         return 1;
  90
  91 #else
  92     printf("skipped\n");
  93 #endif
  94     return 0;
  95 }