Grok 12.0.1
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#include <stdint.h>
21
22#include "hwy/highway_export.h"
23
24// Functions to query the capabilities of the target that will be called by
25// HWY_DYNAMIC_DISPATCH, which is not necessarily the current target.
26
27namespace hwy {
28
29// Returns the HWY_TARGET which HWY_DYNAMIC_DISPATCH selected.
31
32// Returns size in bytes of a vector, i.e. `Lanes(ScalableTag<uint8_t>())`.
33//
34// Do not cache the result, which may change after calling DisableTargets, or
35// if software requests a different vector size (e.g. when entering/exiting SME
36// streaming mode). Instead call this right before the code that depends on the
37// result, without any DisableTargets or SME transition in-between. Note that
38// this involves an indirect call, so prefer not to call this frequently nor
39// unnecessarily.
41
42// Returns whether 16/64-bit floats are a supported lane type.
45
46} // namespace hwy
47
48#endif // HIGHWAY_HWY_PER_TARGET_H_
#define HWY_DLLEXPORT
Definition highway_export.h:13
Definition abort.h:8
HWY_DLLEXPORT size_t VectorBytes()
HWY_DLLEXPORT int64_t DispatchedTarget()
HWY_DLLEXPORT bool HaveFloat64()
HWY_DLLEXPORT bool HaveFloat16()