50 lines
1.6 KiB
C#
50 lines
1.6 KiB
C#
//
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// Copyright (c) 2019-2021 Ryujinx
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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//
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using System.Runtime.CompilerServices;
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namespace Ryujinx.Audio.Renderer.Dsp
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{
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public static class FixedPointHelper
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int ToInt(long value, int qBits)
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{
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return (int)(value >> qBits);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static float ToFloat(long value, int qBits)
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{
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return (float)value / (1 << qBits);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int ToFixed(float value, int qBits)
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{
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return (int)(value * (1 << qBits));
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static int RoundUpAndToInt(long value, int qBits)
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{
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int half = 1 << (qBits - 1);
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return ToInt(value + half, qBits);
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}
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}
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}
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