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-rw-r--r--include/llvm/Support/FileUtilities.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/llvm/Support/FileUtilities.h b/include/llvm/Support/FileUtilities.h
index 7e5d40500d..86d82a14fd 100644
--- a/include/llvm/Support/FileUtilities.h
+++ b/include/llvm/Support/FileUtilities.h
@@ -28,6 +28,19 @@ namespace llvm {
bool DiffFiles(const std::string &FileA, const std::string &FileB,
std::string *Error = 0);
+/// DiffFilesWithTolerance - Compare the two files specified, returning 0 if the
+/// files match, 1 if they are different, and 2 if there is a file error. This
+/// function differs from DiffFiles in that you can specify an absolete and
+/// relative FP error that is allowed to exist. If you specify a string to fill
+/// in for the error option, it will set the string to an error message if an
+/// error occurs, allowing the caller to distinguish between a failed diff and a
+/// file system error.
+///
+int DiffFilesWithTolerance(const std::string &FileA, const std::string &FileB,
+ double AbsTol, double RelTol,
+ std::string *Error = 0);
+
+
/// MoveFileOverIfUpdated - If the file specified by New is different than Old,
/// or if Old does not exist, move the New file over the Old file. Otherwise,
/// remove the New file.