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-rw-r--r--lib/Support/APFloat.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index c296770..d8d414d 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -599,7 +599,8 @@ APFloat::copySignificand(const APFloat &rhs)
}
/* Make this number a NaN, with an arbitrary but deterministic value
- for the significand. */
+ for the significand. If double or longer, this is a signalling NaN,
+ which may not be ideal. */
void
APFloat::makeNaN(void)
{