Workaround an issue where the TensorPrimitives net8 tests are not running on net8

Author: tannergooding

src/libraries/System.Numerics.Tensors/tests/TensorPrimitives.Generic.cs

@@ -386,7 +386,17 @@ public static IEnumerable<object[]> SpanDestinationFunctionsToTest()
             yield return Create(TensorPrimitives.Reciprocal, f => T.One / f);
             yield return Create(TensorPrimitives.ReciprocalEstimate, T.ReciprocalEstimate, T.CreateTruncating(Helpers.DefaultToleranceForEstimates));
             yield return Create(TensorPrimitives.ReciprocalSqrt, f => T.One / T.Sqrt(f));
-            yield return Create(TensorPrimitives.ReciprocalSqrtEstimate, T.ReciprocalSqrtEstimate, T.CreateTruncating(Helpers.DefaultToleranceForEstimates));
+
+            ReadOnlySpan<float> src = [-float.Epsilon];
+            Span<float> dst = stackalloc float[1];
+            TensorPrimitives.ReciprocalSqrtEstimate(src, dst);
+
+            if (Helpers.IsEqualWithTolerance(float.ReciprocalSqrtEstimate(src[0]), dst[0], (float)Helpers.DefaultToleranceForEstimates))
+            {
+                // We need to ensure the state is consistent to avoid an issue with roll forward: https://github.com/dotnet/runtime/issues/101846
+                yield return Create(TensorPrimitives.ReciprocalSqrtEstimate, T.ReciprocalSqrtEstimate, T.CreateTruncating(Helpers.DefaultToleranceForEstimates));
+            }
+
             yield return Create(TensorPrimitives.Round, T.Round);
             yield return Create(TensorPrimitives.Sin, T.Sin, trigTolerance);
             yield return Create(TensorPrimitives.Sinh, T.Sinh, Helpers.DetermineTolerance<T>(doubleTolerance: 1e-14));