From 8d64989275b8708a4545934a52ddef5284d473b8 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Fri, 3 Dec 2010 01:11:13 +0000 Subject: [PATCH] clarify comment git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120772 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/Constants.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/llvm/Constants.h b/include/llvm/Constants.h index a75aaf72a30..0fe9358b858 100644 --- a/include/llvm/Constants.h +++ b/include/llvm/Constants.h @@ -266,8 +266,8 @@ public: inline const APFloat& getValueAPF() const { return Val; } /// isNullValue - Return true if this is the value that would be returned by - /// getNullValue. Don't depend on == for doubles to tell us it's zero, it - /// considers -0.0 to be null as well as 0.0. :( + /// getNullValue. For ConstantFP, this is +0.0, but not -0.0. To handle the + /// two the same, use isZero(). virtual bool isNullValue() const; /// isNegativeZeroValue - Return true if the value is what would be returned -- 2.11.0