minor cleanup

src/ImageSharp/Common/Extensions/SimdUtils.cs

@@ -33,7 +33,7 @@ namespace SixLabors.ImageSharp
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         internal static Vector<float> FastRound(this Vector<float> x)
         {
-            Vector<int> magic0 = new Vector<int>(-2147483648); // 0x80000000
+            Vector<int> magic0 = new Vector<int>(int.MinValue); // 0x80000000
             Vector<float> sgn0 = Vector.AsVectorSingle(magic0);
             Vector<float> and0 = Vector.BitwiseAnd(sgn0, x);
             Vector<float> or0 = Vector.BitwiseOr(and0, new Vector<float>(8388608.0f));

tests/ImageSharp.Tests/Common/SimdUtilsTests.cs

@@ -78,7 +78,7 @@ namespace SixLabors.ImageSharp.Tests.Common
         }
 
         [Fact]
-        public void Round()
+        public void FastRound()
         {
             Vector<float> v = CreateExactTestVector1();
             Vector<float> r = v.FastRound();
@@ -95,7 +95,7 @@ namespace SixLabors.ImageSharp.Tests.Common
         [InlineData(42, 1f)]
         [InlineData(42, 10f)]
         [InlineData(42, 1000f)]
-        public void Round_RandomValues(int seed, float scale)
+        public void FastRound_RandomValues(int seed, float scale)
         {
             Vector<float> v = CreateRandomTestVector(seed, scale);
             Vector<float> r = v.FastRound();