# XCTAssertNotEqualWithAccuracy(_:_:_:_:file:line:) Asserts that two values are not equal within a certain accuracy. ``` func XCTAssertNotEqualWithAccuracy(_ expression1: @autoclosure () throws -> T, _ expression2: @autoclosure () throws -> T, _ accuracy: T, _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) where T : FloatingPoint ``` ## Parameters `expression1` An expression of type `T`, where `T` conforms to . `expression2` An expression of type `T`, where `T` conforms to . `accuracy` An expression of type `T`, where `T` conforms to . Describes the maximum difference between `expression1` and `expression2` for these values to be considered not equal. `message` An optional description of the failure. `file` The file in which failure occurred. Defaults to the file name of the test case in which this function was called. `line` The line number on which failure occurred. Defaults to the line number on which this function was called. ## Discussion `expression1`, `expression2`, and `accuracy` must all be of the same type `T` that conforms to . --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)