From b724dce434975ae1ca8b4c484f39c085c11f1627 Mon Sep 17 00:00:00 2001
From: SeWZC <36623158+SeWZC@users.noreply.github.com>
Date: Fri, 10 Jan 2025 11:30:18 +0800
Subject: [PATCH 1/3] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E6=B5=AE=E7=82=B9?=
 =?UTF-8?q?=E6=95=B0=E4=BA=94=E8=88=8D=E5=85=AD=E5=85=A5=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../FloatingPointNumberExtensions.cs          | 25 ++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs b/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs
index dc0dcce..14f4645 100644
--- a/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs
+++ b/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs
@@ -1,3 +1,5 @@
+using System.Runtime.Intrinsics.Arm;
+
 namespace DotNetCampus.Numerics;
 
 /// <summary>
@@ -84,6 +86,7 @@ public static int Round(this float value)
     /// <returns>四舍五入到整数。</returns>
     public static int RoundingHalfAwayFromZero(this double value)
     {
+
         return (int)Math.Round(value, MidpointRounding.AwayFromZero);
     }
 
@@ -97,6 +100,26 @@ public static int RoundingHalfAwayFromZero(this float value)
         return (int)MathF.Round(value, MidpointRounding.AwayFromZero);
     }
 
+    /// <summary>
+    /// 对浮点数进行五舍六入。
+    /// </summary>
+    /// <param name="value">要进行五舍六入的浮点数。</param>
+    /// <returns>五舍六入到整数。</returns>
+    public static int RoundingHalfToZero(this double value)
+    {
+        return (int)Math.Truncate(value + Math.CopySign(0.5, value));
+    }
+
+    /// <summary>
+    /// 对浮点数进行五舍六入。
+    /// </summary>
+    /// <param name="value">要进行五舍六入的浮点数。</param>
+    /// <returns>五舍六入到整数。</returns>
+    public static int RoundingHalfToZero(this float value)
+    {
+        return (int)MathF.Truncate(value + MathF.CopySign(0.5f, value));
+    }
+
     /// <summary>
     /// 对浮点数进行向下取整。
     /// </summary>
@@ -281,4 +304,4 @@ public static double Pow(this float value, double exponent)
     }
 
     #endregion
-}
\ No newline at end of file
+}

From 73beb72419a9f26271d27dba4a98fb3041179b43 Mon Sep 17 00:00:00 2001
From: SeWZC <36623158+SeWZC@users.noreply.github.com>
Date: Fri, 10 Jan 2025 11:35:07 +0800
Subject: [PATCH 2/3] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E5=8C=BA=E9=97=B4?=
 =?UTF-8?q?=E7=9A=84=20Clamp=20=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 DotNetCampus.Numerics/FloatingPointHelper.cs | 19 +++++++++++++++++++
 DotNetCampus.Numerics/Interval.cs            | 10 ++++++++++
 2 files changed, 29 insertions(+)

diff --git a/DotNetCampus.Numerics/FloatingPointHelper.cs b/DotNetCampus.Numerics/FloatingPointHelper.cs
index 70ad5dd..81ebfcc 100644
--- a/DotNetCampus.Numerics/FloatingPointHelper.cs
+++ b/DotNetCampus.Numerics/FloatingPointHelper.cs
@@ -66,5 +66,24 @@ public static TNum Sqrt<TNum>(this TNum a)
         throw new NotSupportedException();
     }
 
+    public static TNum Clamp<TNum>(this TNum value, TNum min, TNum max)
+        where TNum : unmanaged, IFloatingPoint<TNum>
+    {
+        if (typeof(TNum) == typeof(float))
+            return Unsafe.BitCast<float, TNum>(Math.Clamp(Unsafe.BitCast<TNum, float>(value), Unsafe.BitCast<TNum, float>(min), Unsafe.BitCast<TNum, float>(max)));
+
+        if (typeof(TNum) == typeof(double))
+            return Unsafe.BitCast<double, TNum>(Math.Clamp(Unsafe.BitCast<TNum, double>(value), Unsafe.BitCast<TNum, double>(min), Unsafe.BitCast<TNum, double>(max)));
+
+        if (typeof(TNum) == typeof(NFloat))
+            return Unsafe.BitCast<NFloat, TNum>(NFloat.Clamp(Unsafe.BitCast<TNum, NFloat>(value), Unsafe.BitCast<TNum, NFloat>(min), Unsafe.BitCast<TNum, NFloat>(max)));
+
+        return value <= min
+            ? min
+            : value >= max
+                ? max
+                : value;
+    }
+
     #endregion
 }
diff --git a/DotNetCampus.Numerics/Interval.cs b/DotNetCampus.Numerics/Interval.cs
index 2e4e53b..dcb5de3 100644
--- a/DotNetCampus.Numerics/Interval.cs
+++ b/DotNetCampus.Numerics/Interval.cs
@@ -67,6 +67,16 @@ public bool Contains(TNum value)
         return Start <= value && value <= End;
     }
 
+    /// <summary>
+    /// 将目标值限制在区间内。
+    /// </summary>
+    /// <param name="value">需要限制的值。</param>
+    /// <returns>限制后的值。</returns>
+    public TNum Clamp(ref TNum value)
+    {
+        return value.Clamp(Start, End);
+    }
+
     /// <inheritdoc />
     public override string ToString()
     {

From 82ec95808eccc9e6b2416ce9d4ca9dba622bb76e Mon Sep 17 00:00:00 2001
From: SeWZC <36623158+SeWZC@users.noreply.github.com>
Date: Fri, 10 Jan 2025 11:59:16 +0800
Subject: [PATCH 3/3] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E7=AC=A6=E5=8F=B7?=
 =?UTF-8?q?=E9=94=99=E8=AF=AF?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 DotNetCampus.Numerics/FloatingPointNumberExtensions.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs b/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs
index 14f4645..23eca56 100644
--- a/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs
+++ b/DotNetCampus.Numerics/FloatingPointNumberExtensions.cs
@@ -107,7 +107,7 @@ public static int RoundingHalfAwayFromZero(this float value)
     /// <returns>五舍六入到整数。</returns>
     public static int RoundingHalfToZero(this double value)
     {
-        return (int)Math.Truncate(value + Math.CopySign(0.5, value));
+        return (int)Math.Truncate(value - Math.CopySign(0.5, value));
     }
 
     /// <summary>
@@ -117,7 +117,7 @@ public static int RoundingHalfToZero(this double value)
     /// <returns>五舍六入到整数。</returns>
     public static int RoundingHalfToZero(this float value)
     {
-        return (int)MathF.Truncate(value + MathF.CopySign(0.5f, value));
+        return (int)MathF.Truncate(value - MathF.CopySign(0.5f, value));
     }
 
     /// <summary>