compiler-rt/test/builtins/Unit/ucmpti2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_ucmpti2
   3 // REQUIRES: int128
   4 //===-- ucmpti2_test.c - Test __ucmpti2 -----------------------------------===//
   5 //
   6 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   7 // See https://llvm.org/LICENSE.txt for license information.
   8 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   9 //
  10 //===----------------------------------------------------------------------===//
  11 //
  12 // This file tests __ucmpti2 for the compiler_rt library.
  13 //
  14 //===----------------------------------------------------------------------===//
  15
  16 #include "int_lib.h"
  17 #include <stdio.h>
  18
  19 #ifdef CRT_HAS_128BIT
  20
  21 // Returns:  if (a <  b) returns 0
  22 //           if (a == b) returns 1
  23 //           if (a >  b) returns 2
  24
  25 COMPILER_RT_ABI si_int __ucmpti2(tu_int a, tu_int b);
  26
  27 int test__ucmpti2(tu_int a, tu_int b, si_int expected)
  28 {
  29     si_int x = __ucmpti2(a, b);
  30     if (x != expected)
  31     {
  32         utwords at;
  33         at.all = a;
  34         utwords bt;
  35         bt.all = b;
  36         printf("error in __ucmpti2(0x%.16llX%.16llX, 0x%.16llX%.16llX) = %d, "
  37                "expected %d\n",
  38                at.s.high, at.s.low, bt.s.high, bt.s.low, x, expected);
  39     }
  40     return x != expected;
  41 }
  42
  43 #endif
  44
  45 int main()
  46 {
  47 #ifdef CRT_HAS_128BIT
  48     if (test__ucmpti2(0, 0, 1))
  49         return 1;
  50     if (test__ucmpti2(1, 1, 1))
  51         return 1;
  52     if (test__ucmpti2(2, 2, 1))
  53         return 1;
  54     if (test__ucmpti2(0x7FFFFFFF, 0x7FFFFFFF, 1))
  55         return 1;
  56     if (test__ucmpti2(0x80000000, 0x80000000, 1))
  57         return 1;
  58     if (test__ucmpti2(0x80000001, 0x80000001, 1))
  59         return 1;
  60     if (test__ucmpti2(0xFFFFFFFF, 0xFFFFFFFF, 1))
  61         return 1;
  62     if (test__ucmpti2(0x000000010000000LL, 0x000000010000000LL, 1))
  63         return 1;
  64     if (test__ucmpti2(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL, 1))
  65         return 1;
  66
  67     if (test__ucmpti2(0x0000000200000002LL, 0x0000000300000001LL, 0))
  68         return 1;
  69     if (test__ucmpti2(0x0000000200000002LL, 0x0000000300000002LL, 0))
  70         return 1;
  71     if (test__ucmpti2(0x0000000200000002LL, 0x0000000300000003LL, 0))
  72         return 1;
  73
  74     if (test__ucmpti2(0x0000000200000002LL, 0x0000000100000001LL, 2))
  75         return 1;
  76     if (test__ucmpti2(0x0000000200000002LL, 0x0000000100000002LL, 2))
  77         return 1;
  78     if (test__ucmpti2(0x0000000200000002LL, 0x0000000100000003LL, 2))
  79         return 1;
  80
  81     if (test__ucmpti2(0x0000000200000002LL, 0x0000000200000001LL, 2))
  82         return 1;
  83     if (test__ucmpti2(0x0000000200000002LL, 0x0000000200000002LL, 1))
  84         return 1;
  85     if (test__ucmpti2(0x0000000200000002LL, 0x0000000200000003LL, 0))
  86         return 1;
  87
  88     if (test__ucmpti2(make_tu(0x0000000000000001uLL, 0x0000000000000000uLL),
  89                       make_tu(0x0000000000000000uLL, 0xFFFFFFFFFFFFFFFFuLL), 2))
  90         return 1;
  91     if (test__ucmpti2(make_tu(0x0000000000000001uLL, 0x0000000000000000uLL),
  92                       make_tu(0x0000000000000001uLL, 0x0000000000000000uLL), 1))
  93         return 1;
  94     if (test__ucmpti2(make_tu(0x0000000000000001uLL, 0x0000000000000000uLL),
  95                       make_tu(0x0000000000000001uLL, 0x0000000000000001uLL), 0))
  96         return 1;
  97
  98     if (test__ucmpti2(make_tu(0x8000000000000000uLL, 0x0000000000000000uLL),
  99                       make_tu(0x7FFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL), 2))
 100         return 1;
 101     if (test__ucmpti2(make_tu(0x8000000000000000uLL, 0x0000000000000000uLL),
 102                       make_tu(0x8000000000000000uLL, 0x0000000000000000uLL), 1))
 103         return 1;
 104     if (test__ucmpti2(make_tu(0x8000000000000000uLL, 0x0000000000000000uLL),
 105                       make_tu(0x8000000000000000uLL, 0x0000000000000001uLL), 0))
 106         return 1;
 107
 108     if (test__ucmpti2(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL),
 109                       make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFEuLL), 2))
 110         return 1;
 111     if (test__ucmpti2(make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL),
 112                       make_tu(0xFFFFFFFFFFFFFFFFuLL, 0xFFFFFFFFFFFFFFFFuLL), 1))
 113         return 1;
 114 #else
 115     printf("skipped\n");
 116 #endif
 117    return 0;
 118 }