Add an APFloat::convertToInt(APSInt) function that automatically manages the
memory for the result.
llvm-svn: 135259
diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp
index c3169ac..a46cc8d 100644
--- a/llvm/lib/Support/APFloat.cpp
+++ b/llvm/lib/Support/APFloat.cpp
@@ -13,6 +13,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/ADT/APFloat.h"
+#include "llvm/ADT/APSInt.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/Support/ErrorHandling.h"
@@ -2084,6 +2085,23 @@
return fs;
}
+/* Same as convertToInteger(integerPart*, ...), except the result is returned in
+ an APSInt, whose initial bit-width and signed-ness are used to determine the
+ precision of the conversion.
+ */
+APFloat::opStatus
+APFloat::convertToInteger(APSInt &result,
+ roundingMode rounding_mode, bool *isExact) const
+{
+ unsigned bitWidth = result.getBitWidth();
+ SmallVector<uint64_t, 4> parts(result.getNumWords());
+ opStatus status = convertToInteger(
+ parts.data(), bitWidth, result.isSigned(), rounding_mode, isExact);
+ // Keeps the original signed-ness.
+ result = APInt(bitWidth, parts.size(), parts.data());
+ return status;
+}
+
/* Convert an unsigned integer SRC to a floating point number,
rounding according to ROUNDING_MODE. The sign of the floating
point number is not modified. */