CMSIS-DSP  
CMSIS DSP Software Library
API Reference
Here is a list of all modules:
[detail level 123]
 Examples
 Basic Math Functions
 Bayesian estimators
 Complex Math Functions
 Controller Functions
 Distance functions
 Fast Math Functions
 Filtering Functions
 Interpolation Functions
 Matrix Functions
 Quaternion Math Functions
 Statistics Functions
 Support Functions
 SVM Functions
 Transform Functions
 Window Functions