Add isInteger() to APFloat.

Useful utility function; this wasn't too hard to do before, but also wasn't
obviously discoverable.  Make it explicit.  Reviewed offline by Michael
Gottesman.

llvm-svn: 253254

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/include/llvm/ADT/APFloat.h b/llvm/include/llvm/ADT/APFloat.h
index 5984749ea9a..3fe04060fd5 100644
--- a/llvm/include/llvm/ADT/APFloat.h
+++ b/llvm/include/llvm/ADT/APFloat.h
@@ -448,6 +448,9 @@ public:
   /// Returns true if and only if the number has the largest possible finite
   /// magnitude in the current semantics.
   bool isLargest() const;
+  
+  /// Returns true if and only if the number is an exact integer.
+  bool isInteger() const;
 
   /// @}