diff options
| author | Abseil Team <absl-team@google.com> | 2019-03-06T19·36-0800 |
|---|---|---|
| committer | Derek Mauro <dmauro@google.com> | 2019-03-06T19·49-0500 |
| commit | febc5ee6a92d0eb7dac1fceaa6c648cf6521b4dc (patch) | |
| tree | fcca391395791680a80a559f7efd9c47da6ff305 /absl/hash/internal/hash.h | |
| parent | 9fdf5e5b805412cb2a2e624d3e9a11588120465f (diff) | |
Export of internal Abseil changes.
-- f9f068aa8a260dc576398e47b8e4540902e41358 by Derek Mauro <dmauro@google.com>: Fix test string with embedded NUL. Currently parses as octal. PiperOrigin-RevId: 237088193 -- d271ffdd3f450f817f6d30e98ff39d439aaf3a98 by Abseil Team <absl-team@google.com>: Make symbolizer examine any mapping with read+exec permission regardless of 'w' bit. PiperOrigin-RevId: 237056461 -- af315f8306d36a7367a452fd0b58cafdbf20719d by Abseil Team <absl-team@google.com>: Switch comments referencing base:: CondVar and Mutex to absl::. PiperOrigin-RevId: 236917884 -- c624d5d1c0bdb917bff5e651ba40599472f84e0e by Gennadiy Rozental <rogeeff@google.com>: Internal change PiperOrigin-RevId: 236898300 -- 3cdc82429af964846d1152f49148abc61d196a4b by Samuel Benzaquen <sbenza@google.com>: Make the `long double` overload if AbslHashValue a template to avoid invalid conversions with implicit operators. This overload was never meant to capture anything other than `long double` and any current caller to it that wasn't a `long double` is potentially a bug. In particular, any type with an implicit `bool` conversion is calling this overload instead of trying to find a hash<> specialization, thus causing pretty bad hash behavior. PiperOrigin-RevId: 236877073 GitOrigin-RevId: f9f068aa8a260dc576398e47b8e4540902e41358 Change-Id: If9cc008dd814f0ca06ed881f612c06575f1f7137
Diffstat (limited to 'absl/hash/internal/hash.h')
| -rw-r--r-- | absl/hash/internal/hash.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/absl/hash/internal/hash.h b/absl/hash/internal/hash.h index bd07677a796d..4db816c71083 100644 --- a/absl/hash/internal/hash.h +++ b/absl/hash/internal/hash.h @@ -221,7 +221,9 @@ typename std::enable_if<std::is_enum<Enum>::value, H>::type AbslHashValue( } // AbslHashValue() for hashing floating-point values template <typename H, typename Float> -typename std::enable_if<std::is_floating_point<Float>::value, H>::type +typename std::enable_if<std::is_same<Float, float>::value || + std::is_same<Float, double>::value, + H>::type AbslHashValue(H hash_state, Float value) { return hash_internal::hash_bytes(std::move(hash_state), value == 0 ? 0 : value); @@ -231,8 +233,9 @@ AbslHashValue(H hash_state, Float value) { // For example, in x86 sizeof(long double)==16 but it only really uses 80-bits // of it. This means we can't use hash_bytes on a long double and have to // convert it to something else first. -template <typename H> -H AbslHashValue(H hash_state, long double value) { +template <typename H, typename LongDouble> +typename std::enable_if<std::is_same<LongDouble, long double>::value, H>::type +AbslHashValue(H hash_state, LongDouble value) { const int category = std::fpclassify(value); switch (category) { case FP_INFINITE: |