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(sys::PathWithStatus(File1), 37 sys::PathWithStatus(File2), 38 AbsTolerance, RelTolerance, &ErrorMsg); 39 if (!ErrorMsg.empty()) 40 errs() << argv[0] << ": " << ErrorMsg << "\n"; 41 return DF; 42 } 43 44
