1  ///////////////////////////////////////////////////////////////////////////////
       2  //
       3  /// \file       vli_size.c
       4  /// \brief      Calculates the encoded size of a variable-length integer
       5  //
       6  //  Author:     Lasse Collin
       7  //
       8  //  This file has been put into the public domain.
       9  //  You can do whatever you want with this file.
      10  //
      11  ///////////////////////////////////////////////////////////////////////////////
      12  
      13  #include "common.h"
      14  
      15  
      16  extern LZMA_API(uint32_t)
      17  lzma_vli_size(lzma_vli vli)
      18  {
      19  	if (vli > LZMA_VLI_MAX)
      20  		return 0;
      21  
      22  	uint32_t i = 0;
      23  	do {
      24  		vli >>= 7;
      25  		++i;
      26  	} while (vli != 0);
      27  
      28  	assert(i <= LZMA_VLI_BYTES_MAX);
      29  	return i;
      30  }