c++ - Copying part of an array stored in a memory mapped file -


An array of stores doubles I have memory mapped file, and I want to read the last three entries in the array I ( 

  is one of zero ReadDataArrayToMMF (double * Detaare, Mamf), Int Srnilembn, Elpisitisarti * Pibifpitiar) (Pratimeri (Detaare (Pivioaidi) * Pibifpitiar, Akarf (double) * Arralenment);} < / Code>  
 and use the necessary entries, but it means that the realization Copying whole array of required some values.  
 I  arrayLength  before  n  is a number for receipt of entries  n , but in me is having trouble to copy a portion of the array, which had started before. I  pBufPTR  try to play with the pointer, but the only runtime errors .  
 The entire array was copied How to do an array of memory / copy center?   
 
 
 nth-element to the start offset :  
  const double * offset = reinterpret_cast & lt; Const double *> (* PBufPTR) + n; To copy the last 3 elements:  
  Copimamori (Detaare, Riintrif_kast & lt; Const double * & gt; (* pBufPTR) + Srnilembn - 3, 3 * size (double));

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