github.com/apache/arrow/go/v14@v14.0.2/internal/utils/transpose_ints_test.go (about)

     1  // Licensed to the Apache Software Foundation (ASF) under one
     2  // or more contributor license agreements.  See the NOTICE file
     3  // distributed with this work for additional information
     4  // regarding copyright ownership.  The ASF licenses this file
     5  // to you under the Apache License, Version 2.0 (the
     6  // "License"); you may not use this file except in compliance
     7  // with the License.  You may obtain a copy of the License at
     8  //
     9  // http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing, software
    12  // distributed under the License is distributed on an "AS IS" BASIS,
    13  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14  // See the License for the specific language governing permissions and
    15  // limitations under the License.
    16  
    17  //go:build !noasm
    18  
    19  package utils_test
    20  
    21  import (
    22  	"math/rand"
    23  	"testing"
    24  
    25  	"github.com/apache/arrow/go/v14/internal/utils"
    26  )
    27  
    28  var (
    29  	src     = make([]int8, 1000)
    30  	mapping = make([]int32, 50)
    31  )
    32  
    33  func init() {
    34  	for i := range mapping {
    35  		mapping[i] = int32(i * 100)
    36  	}
    37  
    38  	for i := range src {
    39  		src[i] = int8(rand.Intn(50))
    40  	}
    41  }
    42  
    43  func BenchmarkTransposeASM(b *testing.B) {
    44  	dest := make([]int64, len(src))
    45  	b.ResetTimer()
    46  	for n := 0; n < b.N; n++ {
    47  		utils.TransposeInts(src, dest, mapping)
    48  	}
    49  }