-
Notifications
You must be signed in to change notification settings - Fork 29
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Integrate int4 C++ types into TensorFlow.
Also renamed `tsl/float8.h` to `tsl/ml_dtypes.h`, since it loads all types from the `ml_dtypes` library, which now includes more than just `float8` types. This is a prerequisite to adding proper dtype support. Exposes `tsl::int4` and `tsl::uint4` (with corresponding `tensorflow::` versions) into the platform list of types. PiperOrigin-RevId: 561481592
- Loading branch information
Showing
8 changed files
with
523 additions
and
102 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /* Copyright 2023 The ml_dtypes Authors | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| ==============================================================================*/ | ||
|
|
||
| #ifndef ML_DTYPES_INT4_H_ | ||
| #define ML_DTYPES_INT4_H_ | ||
|
|
||
| #include <cstdint> | ||
| #include <limits> | ||
| #include <optional> | ||
| #include <ostream> | ||
| #include <sstream> | ||
| #include <string> | ||
|
|
||
| namespace ml_dtypes { | ||
|
|
||
| template <typename UnderlyingTy> | ||
| struct i4 { | ||
| private: | ||
| UnderlyingTy v : 4; | ||
|
|
||
| public: | ||
| i4() : v(0) {} | ||
| explicit i4(UnderlyingTy val) : v(val & 0x0F) {} | ||
| template <typename T> | ||
| explicit i4(T t) : i4(static_cast<UnderlyingTy>(t)) {} | ||
| i4(const i4& other) = default; | ||
|
|
||
| static constexpr i4 lowest() { | ||
| return std::is_signed<UnderlyingTy>::value ? i4(-8) : i4(0); | ||
| } | ||
| static constexpr i4 highest() { | ||
| return std::is_signed<UnderlyingTy>::value ? i4(7) : i4(15); | ||
| } | ||
|
|
||
| template <typename T, typename = std::enable_if_t<std::is_arithmetic_v<T>>> | ||
| explicit operator T() const { | ||
| return static_cast<T>(v); | ||
| } | ||
| // NOLINTNEXTLINE(google-explicit-constructor) | ||
| operator std::optional<int64_t>() const { return static_cast<int64_t>(v); } | ||
|
|
||
| i4 operator-() const { return i4(-v); } | ||
| i4 operator+(const i4& other) const { return i4((v + other.v)); } | ||
| i4 operator-(const i4& other) const { return i4((v - other.v)); } | ||
| i4 operator*(const i4& other) const { return i4((v * other.v)); } | ||
| i4 operator/(const i4& other) const { return i4((v / other.v)); } | ||
| i4 operator%(const i4& other) const { return i4((v % other.v)); } | ||
|
|
||
| i4 operator>>(const int amount) const { return i4((v >> amount)); } | ||
| i4 operator<<(const int amount) const { return i4((v << amount)); } | ||
|
|
||
| bool operator==(const i4& other) const { return v == other.v; } | ||
| bool operator!=(const i4& other) const { return v != other.v; } | ||
| bool operator<(const i4& other) const { return v < other.v; } | ||
| bool operator>(const i4& other) const { return v > other.v; } | ||
| bool operator<=(const i4& other) const { return v <= other.v; } | ||
| bool operator>=(const i4& other) const { return v >= other.v; } | ||
|
|
||
| bool operator==(const int64_t other) const { return v == other; } | ||
| bool operator!=(const int64_t other) const { return v != other; } | ||
| bool operator<(const int64_t other) const { return v < other; } | ||
| bool operator>(const int64_t other) const { return v > other; } | ||
| bool operator<=(const int64_t other) const { return v <= other; } | ||
| bool operator>=(const int64_t other) const { return v >= other; } | ||
|
|
||
| i4& operator++() { | ||
| v = (v + 1) & 0x0F; | ||
| return *this; | ||
| } | ||
|
|
||
| friend ::std::ostream& operator<<(::std::ostream& os, const i4& num) { | ||
| os << static_cast<int16_t>(num.v); | ||
| return os; | ||
| } | ||
|
|
||
| std::string ToString() const { | ||
| std::ostringstream os; | ||
| os << static_cast<int16_t>(v); | ||
| return os.str(); | ||
| } | ||
| }; | ||
|
|
||
| using int4 = i4<int8_t>; | ||
| using uint4 = i4<uint8_t>; | ||
|
|
||
| } // namespace ml_dtypes | ||
|
|
||
| #endif // ML_DTYPES_INT4_H_ |
Oops, something went wrong.