Check in LLVM r95781.

2 files changed, 59 insertions, 0 deletions

diff --git a/utils/fpcmp/Makefile b/utils/fpcmp/Makefile
new file mode 100644
index 0000000..fd2f747
--- /dev/null
+++ b/utils/fpcmp/Makefile
@@ -0,0 +1,16 @@
+##===- utils/fpcmp/Makefile --------------------------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../..
+TOOLNAME = fpcmp
+USEDLIBS = LLVMSupport.a LLVMSystem.a
+NO_INSTALL = 1
+
+include $(LEVEL)/Makefile.common
+
diff --git a/utils/fpcmp/fpcmp.cpp b/utils/fpcmp/fpcmp.cpp
new file mode 100644
index 0000000..66d8ab1
--- /dev/null
+++ b/utils/fpcmp/fpcmp.cpp
@@ -0,0 +1,43 @@
+//===- fpcmp.cpp - A fuzzy "cmp" that permits floating point noise --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// fpcmp is a tool that basically works like the 'cmp' tool, except that it can
+// tolerate errors due to floating point noise, with the -r and -a options.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileUtilities.h"
+#include <iostream>
+using namespace llvm;
+
+namespace {
+  cl::opt<std::string>
+  File1(cl::Positional, cl::desc("<input file #1>"), cl::Required);
+  cl::opt<std::string>
+  File2(cl::Positional, cl::desc("<input file #2>"), cl::Required);
+
+  cl::opt<double>
+  RelTolerance("r", cl::desc("Relative error tolerated"), cl::init(0));
+  cl::opt<double>
+  AbsTolerance("a", cl::desc("Absolute error tolerated"), cl::init(0));
+}
+
+int main(int argc, char **argv) {
+  cl::ParseCommandLineOptions(argc, argv);
+
+  std::string ErrorMsg;
+  int DF = DiffFilesWithTolerance(sys::PathWithStatus(File1), 
+                                  sys::PathWithStatus(File2),
+                                  AbsTolerance, RelTolerance, &ErrorMsg);
+  if (!ErrorMsg.empty())
+    std::cerr << argv[0] << ": " << ErrorMsg << "\n";
+  return DF;
+}
+