1 //===- fpcmp.cpp - A fuzzy "cmp" that permits floating point noise --------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // fpcmp is a tool that basically works like the 'cmp' tool, except that it can 10 // tolerate errors due to floating point noise, with the -r and -a options. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/Support/CommandLine.h" 15 #include "llvm/Support/FileUtilities.h" 16 #include "llvm/Support/raw_ostream.h" 17 using namespace llvm; 18 19 namespace { 20 cl::opt<std::string> 21 File1(cl::Positional, cl::desc("<input file #1>"), cl::Required); 22 cl::opt<std::string> 23 File2(cl::Positional, cl::desc("<input file #2>"), cl::Required); 24 25 cl::opt<double> 26 RelTolerance("r", cl::desc("Relative error tolerated"), cl::init(0)); 27 cl::opt<double> 28 AbsTolerance("a", cl::desc("Absolute error tolerated"), cl::init(0)); 29 } 30 31 int main(int argc, char **argv) { 32 cl::ParseCommandLineOptions(argc, argv); 33 34 std::string ErrorMsg; 35 int DF = DiffFilesWithTolerance(File1, File2, AbsTolerance, RelTolerance, 36 &ErrorMsg); 37 if (!ErrorMsg.empty()) 38 errs() << argv[0] << ": " << ErrorMsg << "\n"; 39 return DF; 40 } 41 42