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Daily update on 20250721-223448 by Nitload Youmu. Additional Message : Rename StgSHarp.C to StgSharp.Native. Add SDL to repo.

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Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>
This commit is contained in:
Nitload
2025-07-21 22:34:48 +08:00
parent c624a8ca38
commit 28ea5d1d1e
1215 changed files with 628924 additions and 114 deletions
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StgSharp.Common/Math/Scalar/Exp.cs
+17 -1
View File
@@ -28,12 +28,28 @@
//
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System;
using System.Runtime.CompilerServices;
namespace StgSharp.Math
{
public static unsafe partial class Scaler
{
public const float E = 2.718281828f;
public const double EDouble = System.Math.E;
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static float Exp( float x )
{
return MathF.Exp( x );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static double Exp( double x )
{
return System.Math.Exp( x );
}
/// <summary>
/// Get the value of E ^ x;
@@ -44,7 +60,7 @@ namespace StgSharp.Math
/// <returns>
///
/// </returns>
public static unsafe float Exp( float x )
public static unsafe float ExpSlow( float x )
{
if( x == 1 ) {
return E;
StgSharp.Common/Math/Scalar/Factorial.cs
+61
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@@ -0,0 +1,61 @@
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
// file="Factorial.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.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace StgSharp.Math
{
public static partial class Scaler
{
private static readonly uint[] factorialResult = [1, 1, 2, 6, 24,120,720,5040,40320,362880,3628800,39916800,479001600];
public static unsafe ulong Factorial( int n )
{
ArgumentOutOfRangeException.ThrowIfLessThan( n, 0 );
if( n < 13 ) {
return factorialResult[ n ];
}
if( n < 30 ) {
return InternalIO.Intrinsic.factorial_simd( n );
}
double
dn = n,
stir = Sqrt( 2 * PiDouble * dn ) * Pow( dn / EDouble, dn ),
correction = Exp( 1 / ( 12 * dn ) );
return ( ulong )( stir * correction );
}
}
}
StgSharp.Common/Math/Scalar/Pow.cs
+15 -1
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@@ -28,11 +28,25 @@
//
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System.Runtime.CompilerServices;
namespace StgSharp.Math
{
public static unsafe partial class Scaler
{
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static unsafe float Pow( float x, float y )
{
return System.MathF.Pow( x, y );
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static unsafe double Pow( double x, double y )
{
return System.Math.Pow( x, y );
}
/// <summary>
/// calculate the value of x^y
/// </summary>
@@ -45,7 +59,7 @@ namespace StgSharp.Math
/// <returns>
/// Returns the value of x^y
/// </returns>
public static unsafe float Pow( float x, float y )
public static unsafe float PowSlow( float x, float y )
{
/*
* x^y = E ^ ( log( x ) * y )
StgSharp.Common/Math/Scalar/Sin.cs
+1 -22
View File
@@ -38,32 +38,11 @@ namespace StgSharp.Math
{
public const float Pi = 3.1415926f;
private static readonly float[] cosData = {
1f, 0.987688341014302f, 0.951056517951169f, 0.891006527837756f, 0.809017000674805f, 0.707106790659974f, 0.587785265298989f, 0.453990516451646f, 0.309017014761716f, 0.156434488858737f, 2.67948965850537E-08f, -0.156434435928723f, -0.309016963794794f, -0.453990468702791f, -0.587785221943935f, -0.707106752766267f, -0.809016969175515f, -0.891006503508499f, -0.951056501391011f, -0.98768833263101f, -0.999999999999999f, -0.987688349397591f, -0.951056534511324f, -0.891006552167012f, -0.809017032174094f, -0.707106828553679f, -0.587785308654041f, -0.4539905642005f, -0.309017065728638f, -0.156434541788751f, -8.03846893110719E-08f, 0.156434382998709f, 0.309016912827872f, 0.453990420953934f, 0.58778517858888f, 0.707106714872559f, 0.809016937676222f, 0.891006479179238f, 0.951056484830851f, 0.987688324247716f,
};
private static readonly float[] sinData = {
0f, 0.15643446239373f, 0.309016989278255f, 0.453990492577218f, 0.587785243621462f, 0.707106771713121f, 0.80901698492516f, 0.891006515673128f, 0.951056509671091f, 0.987688336822657f, 1f, 0.987688345205947f, 0.951056526231247f, 0.891006540002384f, 0.80901701642445f, 0.707106809606826f, 0.587785286976515f, 0.453990540326073f, 0.309017040245177f, 0.156434515323744f, 5.35897931701074E-08f, -0.156434409463716f, -0.309016938311333f, -0.453990444828362f, -0.587785200266408f, -0.707106733819413f, -0.809016953425868f, -0.891006491343869f, -0.951056493110931f, -0.987688328439363f, -0.999999999999997f, -0.987688353589235f, -0.951056542791401f, -0.891006564331638f, -0.809017047923737f, -0.70710684750053f, -0.587785330331566f, -0.453990588074927f, -0.309017091212098f, -0.156434568253757f,
};
public const double PiDouble = System.Math.PI;
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static unsafe float Sin( float x )
{
/*
float refer = x / 360.0f;
refer -= (int)refer;
refer *= 40;
int a = (int)refer; //大分度，查表
refer -= a; //小分度，拟合
float refer2 = refer * refer;
return (sinData[a] * ((1 - (0.0123370055f * refer2)) + (2.536695709e-5f * refer2 * refer2)))
+ (cosData[a] * ((0.1570796327f * refer) - (6.459640975e-4f * refer * refer2)));
*/
return MathF.Sin( x );
}
StgSharp.Common/Math/Scalar/Sqrt.cs
+7 -40
View File
@@ -38,62 +38,23 @@ namespace StgSharp.Math
public static unsafe float SeedSqrt( float x )
{
/*
* 本方法采用分别对指数和小数处理的方法计算平方根
* 将指数除以2即可获得结果的指数
* （补充：指数最低位被加到小数位中以抵消一个多余的2 ^ 1的影响）
* 小数部分则统一乘以2 ^ 16后由y = Sqrt(x)在1.5 * 2 ^ 16处的切线近似
* 为简化操作，提高计算速度，切线左界被移动到远点
* 在进一步简化操作后，计算精度达到0.5%，速度约为.Net库函数的3倍
*/
if( x < 0 )
{
throw new ArgumentOutOfRangeException( "Input is smaller than zero!" );
}
if( x == 0 ) {
return 0;
}
/*
* 提取指数位并减半
* 由于平方根仅对正数有效
* 故不考虑正负号
*/
if( x < 0 )
{
throw new ArgumentOutOfRangeException();
}
ArgumentOutOfRangeException.ThrowIfNegative( x );
if( x <= 1e-12 ) {
return 0;
}
//提取指数位并减去指数位中的127
//由于平方根仅对正数有效
//故不考虑正负号
uint a = *( uint* )&x;
uint f = a;
f >>= 23;
f /= 2;
f += 64;
//提取小数位
//由于平方根仅对正数有效
//故不考虑正负号
a -= 0b_0011_1111_0000_0000_0000_0000_0000_0000;
uint e = a << 8;
e >>= 8;
//线性近似
e *= 0b_1101_0001;
e >>= 24;
e += 0b_0000_0000_0001_0000_1010_1000_1110_0010;
//还原指数
f <<= 23;
e += f;
float result = *( float* )&e;
result = ( result + ( x / result ) ) / 2;
return ( result + ( x / result ) ) / 2;
@@ -106,5 +67,11 @@ namespace StgSharp.Math
/**/
}
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static double Sqrt( double x )
{
return System.Math.Sqrt( x );
}
}
}
StgSharp.Common/Math/Scalar/Tan.cs
+5 -14
View File
@@ -28,27 +28,18 @@
//
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
using System;
using System.Runtime.CompilerServices;
namespace StgSharp.Math
{
public static partial class Scaler
{
[MethodImpl( MethodImplOptions.AggressiveInlining )]
public static float Tan( float x )
{
float refer = x / 360.0f;
refer -= ( int )refer;
refer *= 40;
int a = ( int )refer; //大分度，查表
refer -= a; //小分度，拟合
float refer2 = refer * refer;
float sin = ( 0.1570796327f * refer ) - ( 6.459640975e-4f * refer * refer2 );
float cos = ( 1 - ( 0.0123370055f * refer2 ) ) + ( 2.536695709e-5f * refer2 * refer2 );
return ( ( sinData[ a ] * cos ) + ( cosData[ a ] * sin ) ) / ( ( cosData[ a ] * cos ) - ( sinData[
a ] * sin ) );
return MathF.Tan( x );
}
}