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-rw-r--r--compiler-rt/lib/builtins/adddf3.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler-rt/lib/builtins/adddf3.c b/compiler-rt/lib/builtins/adddf3.c
index d5c5e980b6d..73ad6150096 100644
--- a/compiler-rt/lib/builtins/adddf3.c
+++ b/compiler-rt/lib/builtins/adddf3.c
@@ -6,7 +6,8 @@
//
//===----------------------------------------------------------------------===//
//
-// This file implements double-precision soft-float addition.
+// This file implements double-precision soft-float addition with the IEEE-754
+// default rounding (to nearest, ties to even).
//
//===----------------------------------------------------------------------===//
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