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-rw-r--r--deps/v8/src/double.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/deps/v8/src/double.h b/deps/v8/src/double.h
index fcf6906af7..16a3245e9a 100644
--- a/deps/v8/src/double.h
+++ b/deps/v8/src/double.h
@@ -130,6 +130,12 @@ class Double {
return (d64 & kExponentMask) == kExponentMask;
}
+ bool IsNan() const {
+ uint64_t d64 = AsUint64();
+ return ((d64 & kExponentMask) == kExponentMask) &&
+ ((d64 & kSignificandMask) != 0);
+ }
+
bool IsInfinite() const {
uint64_t d64 = AsUint64();
return ((d64 & kExponentMask) == kExponentMask) &&