34 lines
994 B
Go
34 lines
994 B
Go
/*
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* Copyright 2024 CloudWeGo Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package base64x
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import (
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`fmt`
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`os`
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`github.com/klauspost/cpuid/v2`
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)
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func hasAVX2() bool {
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switch v := os.Getenv("B64X_MODE"); v {
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case "" : fallthrough
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case "auto" : return cpuid.CPU.Has(cpuid.AVX2)
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case "noavx2" : return false
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default : panic(fmt.Sprintf("invalid mode: '%s', should be one of 'auto', 'noavx2'", v))
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}
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}
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