Grok 10.0.5
per_target.h
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1// Copyright 2022 Google LLC
2// SPDX-License-Identifier: Apache-2.0
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8// http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15
16#ifndef HIGHWAY_HWY_PER_TARGET_H_
17#define HIGHWAY_HWY_PER_TARGET_H_
18
19#include <stddef.h>
20
21// Per-target functions.
22
23namespace hwy {
24
25// Returns size in bytes of a vector, i.e. `Lanes(ScalableTag<uint8_t>())`.
26//
27// Do not cache the result, which may change after calling DisableTargets, or
28// if software requests a different vector size (e.g. when entering/exiting SME
29// streaming mode). Instead call this right before the code that depends on the
30// result, without any DisableTargets or SME transition in-between. Note that
31// this involves an indirect call, so prefer not to call this frequently nor
32// unnecessarily.
33size_t VectorBytes();
34
35} // namespace hwy
36
37#endif // HIGHWAY_HWY_PER_TARGET_H_
Definition: aligned_allocator.h:27
size_t VectorBytes()