size.go raw

   1  // Copyright 2022-2025 The sacloud/packages-go Authors
   2  //
   3  // Licensed under the Apache License, Version 2.0 (the "License");
   4  // you may not use this file except in compliance with the License.
   5  // You may obtain a copy of the License at
   6  //
   7  //      http://www.apache.org/licenses/LICENSE-2.0
   8  //
   9  // Unless required by applicable law or agreed to in writing, software
  10  // distributed under the License is distributed on an "AS IS" BASIS,
  11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  // See the License for the specific language governing permissions and
  13  // limitations under the License.
  14  
  15  // Package size さくらのクラウドでのサイズ(MiB/GiB)
  16  //
  17  // MBを起点としてGiBへの変換などを行う
  18  package size
  19  
  20  const (
  21  	// MiB 1024KiB
  22  	MiB = 1
  23  	// GiB 1024MiB
  24  	GiB = 1024 * MiB
  25  	// TiB 1024GiB
  26  	TiB = 1024 * GiB
  27  	// PiB 1024TiB
  28  	PiB = 1024 * TiB
  29  )
  30  
  31  // GiBToMiB GiBからMiB
  32  func GiBToMiB(sizeGiB int) int {
  33  	return convertUnit(sizeGiB, GiB, MiB)
  34  }
  35  
  36  // MiBToGiB MiBからGiB
  37  func MiBToGiB(sizeMiB int) int {
  38  	return convertUnit(sizeMiB, MiB, GiB)
  39  }
  40  
  41  func convertUnit(size int, sourceUnit int64, desiredUnit int64) int {
  42  	return int(int64(size) * sourceUnit / desiredUnit)
  43  }
  44