1 files changed, 31 insertions, 0 deletions
diff --git a/release-notes/7.0/preview/api-diff/preview7/Microsoft.NETCore.App/7.0-preview7_System.Runtime.InteropServices.md b/release-notes/7.0/preview/api-diff/preview7/Microsoft.NETCore.App/7.0-preview7_System.Runtime.InteropServices.md
new file mode 100644
index 00000000..e807d5a9
--- /dev/null
+++ b/release-notes/7.0/preview/api-diff/preview7/Microsoft.NETCore.App/7.0-preview7_System.Runtime.InteropServices.md
@@ -0,0 +1,31 @@
+# System.Runtime.InteropServices
+
+``` diff
+ namespace System.Runtime.InteropServices {
+     [NullableAttribute((byte)0)]
+     [NullableContextAttribute((byte)1)]
+     public static class Marshal {
+-        public static IntPtr GetHINSTANCE(Module m);
++        [RequiresAssemblyFilesAttribute("Windows only assigns HINSTANCE to assemblies loaded from disk. This API will return -1 for modules without a file on disk.")]
++        public static IntPtr GetHINSTANCE(Module m);
++        public static string GetLastPInvokeErrorMessage();
++        public static string GetPInvokeErrorMessage(int error);
+     }
+-    [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
+-    public readonly struct NFloat : IAdditionOperators<NFloat, NFloat, NFloat>, IAdditiveIdentity<NFloat, NFloat>, IBinaryFloatingPointIeee754<NFloat>, IBinaryNumber<NFloat>, IBitwiseOperators<NFloat, NFloat, NFloat>, IComparable, IComparable<NFloat>, IComparisonOperators<NFloat, NFloat>, IDecrementOperators<NFloat>, IDivisionOperators<NFloat, NFloat, NFloat>, IEqualityOperators<NFloat, NFloat>, IEquatable<NFloat>, IExponentialFunctions<NFloat>, IFloatingPoint<NFloat>, IFloatingPointIeee754<NFloat>, IFormattable, IHyperbolicFunctions<NFloat>, IIncrementOperators<NFloat>, ILogarithmicFunctions<NFloat>, IMinMaxValue<NFloat>, IModulusOperators<NFloat, NFloat, NFloat>, IMultiplicativeIdentity<NFloat, NFloat>, IMultiplyOperators<NFloat, NFloat, NFloat>, INumber<NFloat>, INumberBase<NFloat>, IParsable<NFloat>, IPowerFunctions<NFloat>, IRootFunctions<NFloat>, ISignedNumber<NFloat>, ISpanFormattable, ISpanParsable<NFloat>, ISubtractionOperators<NFloat, NFloat, NFloat>, ITrigonometricFunctions<NFloat>, IUnaryNegationOperators<NFloat, NFloat>, IUnaryPlusOperators<NFloat, NFloat> {
++    [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
++    public readonly struct NFloat : IAdditionOperators<NFloat, NFloat, NFloat>, IAdditiveIdentity<NFloat, NFloat>, IBinaryFloatingPointIeee754<NFloat>, IBinaryNumber<NFloat>, IBitwiseOperators<NFloat, NFloat, NFloat>, IComparable, IComparable<NFloat>, IComparisonOperators<NFloat, NFloat, bool>, IDecrementOperators<NFloat>, IDivisionOperators<NFloat, NFloat, NFloat>, IEqualityOperators<NFloat, NFloat, bool>, IEquatable<NFloat>, IExponentialFunctions<NFloat>, IFloatingPoint<NFloat>, IFloatingPointConstants<NFloat>, IFloatingPointIeee754<NFloat>, IFormattable, IHyperbolicFunctions<NFloat>, IIncrementOperators<NFloat>, ILogarithmicFunctions<NFloat>, IMinMaxValue<NFloat>, IModulusOperators<NFloat, NFloat, NFloat>, IMultiplicativeIdentity<NFloat, NFloat>, IMultiplyOperators<NFloat, NFloat, NFloat>, INumber<NFloat>, INumberBase<NFloat>, IParsable<NFloat>, IPowerFunctions<NFloat>, IRootFunctions<NFloat>, ISignedNumber<NFloat>, ISpanFormattable, ISpanParsable<NFloat>, ISubtractionOperators<NFloat, NFloat, NFloat>, ITrigonometricFunctions<NFloat>, IUnaryNegationOperators<NFloat, NFloat>, IUnaryPlusOperators<NFloat, NFloat> {
++        static NFloat System.Numerics.IBinaryNumber<System.Runtime.InteropServices.NFloat>.AllBitsSet { get; }
++        [NullableContextAttribute((byte)1)]
++        public static NFloat CreateChecked<TOther>(TOther value) where TOther : INumberBase<TOther>;
++        [NullableContextAttribute((byte)1)]
++        public static NFloat CreateSaturating<TOther>(TOther value) where TOther : INumberBase<TOther>;
++        [NullableContextAttribute((byte)1)]
++        public static NFloat CreateTruncating<TOther>(TOther value) where TOther : INumberBase<TOther>;
+-        public static NFloat Root(NFloat x, int n);
++        public static NFloat RootN(NFloat x, int n);
++        public static (NFloat SinPi, NFloat CosPi) SinCosPi(NFloat x);
+     }
+ }
+```
+