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stgsharp/源代码/StgSharp/Math/Scalar/BasicOps.cs
T

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2.7 KiB
C#

//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
// file="BasicOps.cs"
// Project: StgSharp
// AuthorGroup: Nitload Space
// Copyright (c) Nitload Space. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the “Software”), to deal in the Software without restriction,
// including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software,
// and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and
// this permission notice shall be included in all copies
// or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED “AS IS”,
// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH
// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System;
using System.Globalization;
using System.Runtime.CompilerServices;
namespace StgSharp.Math
{
public static unsafe partial class Scaler
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static unsafe float Abs(float x)
{
uint* a = (uint*)&x;
*a &= 0b_0111_1111_1111_1111_1111_1111_1111_1111;
return *(float*)a;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static unsafe int Abs(int x)
{
uint* a = (uint*)&x;
*a &= 0b_0111_1111_1111_1111_1111_1111_1111_1111;
return *(int*)a;
}
internal static string GetListSeparator(IFormatProvider formatProvider)
{
if (formatProvider is CultureInfo cultureInfo)
{
return cultureInfo.TextInfo.ListSeparator;
}
if (formatProvider?.GetFormat(typeof(TextInfo)) is TextInfo textInfo)
{
return textInfo.ListSeparator;
}
return CultureInfo.CurrentCulture.TextInfo.ListSeparator;
}
}
}