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comparison utils/fpcmp/fpcmp.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children c2174574ed3a
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-1:000000000000 0:95c75e76d11b
1 //===- fpcmp.cpp - A fuzzy "cmp" that permits floating point noise --------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // fpcmp is a tool that basically works like the 'cmp' tool, except that it can
11 // tolerate errors due to floating point noise, with the -r and -a options.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #include "llvm/Support/CommandLine.h"
16 #include "llvm/Support/FileUtilities.h"
17 #include "llvm/Support/raw_ostream.h"
18 using namespace llvm;
19
20 namespace {
21 cl::opt<std::string>
22 File1(cl::Positional, cl::desc("<input file #1>"), cl::Required);
23 cl::opt<std::string>
24 File2(cl::Positional, cl::desc("<input file #2>"), cl::Required);
25
26 cl::opt<double>
27 RelTolerance("r", cl::desc("Relative error tolerated"), cl::init(0));
28 cl::opt<double>
29 AbsTolerance("a", cl::desc("Absolute error tolerated"), cl::init(0));
30 }
31
32 int main(int argc, char **argv) {
33 cl::ParseCommandLineOptions(argc, argv);
34
35 std::string ErrorMsg;
36 int DF = DiffFilesWithTolerance(File1, File2, AbsTolerance, RelTolerance,
37 &ErrorMsg);
38 if (!ErrorMsg.empty())
39 errs() << argv[0] << ": " << ErrorMsg << "\n";
40 return DF;
41 }
42