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| author | Job Bautista <jobbautista9@aol.com> | 2023-05-10 19:22:39 +0800 |
|---|---|---|
| committer | Job Bautista <jobbautista9@aol.com> | 2023-05-12 16:26:04 +0800 |
| commit | ef31c426b19568a72932d9d6982685ad6baf0af6 (patch) | |
| tree | 57a8553c13941f97acfd88447a21b209d4f22fa6 /mfbt | |
| parent | 30b5a4d830294cd7496853e449cb5b634ed53fce (diff) | |
| download | uxp-ef31c426b19568a72932d9d6982685ad6baf0af6.tar.gz | |
Issue #2241 - Part 2: Add SameValueZero implementation to mfbt/FloatingPoint.h
Backported from Mozilla bug 1560658.
This is to prevent duplication of code while implementing DOMMatrix operations.
Diffstat (limited to 'mfbt')
| -rw-r--r-- | mfbt/FloatingPoint.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mfbt/FloatingPoint.h b/mfbt/FloatingPoint.h index 6a0e454ae7..7d73d7e848 100644 --- a/mfbt/FloatingPoint.h +++ b/mfbt/FloatingPoint.h @@ -396,6 +396,20 @@ NumbersAreIdentical(T aValue1, T aValue2) return BitwiseCast<Bits>(aValue1) == BitwiseCast<Bits>(aValue2); } +/** + * Return true if |aValue| and |aValue2| are equal (ignoring sign if both are + * zero) or both NaN. + */ +template <typename T> +static inline bool +EqualOrBothNaN(T aValue1, T aValue2) +{ + if (IsNaN(aValue1)) { + return IsNaN(aValue2); + } + return aValue1 == aValue2; +} + namespace detail { template<typename T> |