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"
18using namespace llvm;
19
20namespace {
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
32int 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
43