Question

I have a function that expects a parameter of type float**, but I do not know how to declare and initialize this variable.

Can anyone give me any advice on this? Better yet, what type of variable is it? I have been looking into it for days now and any search results comes up empty.

Thanks

EDIT

Here is the function in question

    - (OSStatus)getBuffersInner:(float**)buffers numberOfBuffers:(int)chnls samples:(int)samples
    {
        int i, j ;
        UInt32 frames ;

        // zero out requested buffers if client needs more channels than exist in the channel map
        for ( i = numberOfMappedChannels; i < chnls; i++ ) memset( buffers[i], 0, samples*sizeof( float ) ) ;

        //  place buffer pointers into bufferList, following the channelMap
        for ( i = 0; i < fileDescriptor.mChannelsPerFrame; i++ ) {
            j = inverseChannelMap[i] ;
            resampledBufferList.list.mBuffers[i].mData = ( j < 0 || j >= chnls ) ? zeros : buffers[j] ;
        }
        frames = samples ;
        return ExtAudioFileRead( audioFileRef, &frames, &resampledBufferList.list ) ;
    }

Answer 1

It is float[n][m] matrix. Something like int main(int argc, char **argv), where argv is an array of ‘strings’, an array of arrays of char.