# CFStringGetIntValue(_:) Returns the integer value represented by a string. ``` func CFStringGetIntValue(_ str: CFString!) -> Int32 ``` ## Parameters `str` A string that represents a signed integer value. The only allowed characters are the ASCII digit characters (ASCII `0x30` - `0x39`), the plus sign (ASCII `0x2B`), the minus sign (ASCII `0x2D`), and the period character (ASCII `0x2E`). ## Return Value The signed integer value represented by `str`. The result is `0` if there is a scanning error (if the string contains disallowed characters or does not represent an integer value) or `INT_MAX` or `INT_MIN` if there is an overflow error. ## Discussion Consider the following example: ```objc SInt32 val = CFStringGetIntValue(CFSTR("-123")); ``` The variable `val` in this example would contain the value `-123` after the function is called. --- 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)