A list of preprocessor macros to apply when compiling the library source.
- iOS 8.0+
- macOS 10.11+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
The macros are specified as key/value pairs, using an
NSDictionary. The keys must be
NSString objects, and the values can be either
The default value is
Specifying Compiler Options
var fastMathEnabled: Bool
A Boolean value that indicates whether the compiler can perform optimizations for floating-point arithmetic that may violate the IEEE 754 standard.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software