Cannot include Accelerate Header in iOS C++ code -

i have code want call vdsp upon. c++ file, in xcode project. main project in objective c. whenever

#include <accelerate/accelerate.h>   

it gives me lot of errors.

#if defined(__cplusplus) #pragma once  #include <accelerate/accelerate.h> // <-- error #include "oscillator.h"   namespace synth { class cqblimitedoscillator : public coscillator {     float douts[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; public:     cqblimitedoscillator(void);     ~cqblimitedoscillator(void);      // --- init globals     inline virtual void initglobalparameters(globaloscillatorparams* pglobaloscparams)     {         // --- call base class first store pointer         coscillator::initglobalparameters(pglobaloscparams);          // --- add qbl specifics here     }      // -- parallel proqcess 4 sawteeth     inline void dosawteeth(float* doutsin, float dmodulo, float dinc) {          float scalar2val = 2.0f;         float scalar1val = -1.0f;          // -- 2.0f*dvalue - 1.0f         vdsp_vsmsa(doutsin, 1, &scalar2val, &scalar1val, doutsin, 1, 4);      } 

one of files included in oscillator.h had this:

#include "math.h" 

changing

#include <cmath> 

did trick. accelerate uses math library in way (cmath) well.