OS X and iOS have Accelerate.framework: https://developer.apple.com/library/mac/documentation/Accelerate/Reference/AccelerateFWRef/ https://developer.apple.com/

OS X and iOS have Accelerate.framework: https://developer.apple.com/library/mac/documentation/Accelerate/Reference/AccelerateFWRef/ https://developer.apple.com/library/mac/documentation/Accele... In particular, see vDSP_sve and vDSP_sveD which compute single-precision and double-precision vector sums respectively.