mirror of
https://github.com/hajimehoshi/ebiten.git
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28 lines
784 B
Go
28 lines
784 B
Go
// Copyright 2014 Hajime Hoshi
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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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package math
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// NextPowerOf2Int returns a nearest power of 2 to x.
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func NextPowerOf2Int(x int) int {
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if x <= 0 {
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panic("x must be positive")
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}
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r := 1
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for r < x {
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r <<= 1
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}
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return r
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}
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