vlt.data.hashmatlabvariable

  HASHMATLABVARIABLE - create a hashed version of a Matlab variable in memory

  H = vlt.data.hashmatlabvariable(D)

  Creates a hashed value based on the binary data in the variable D.
  Depending upon the algorithm, the output H may vary (see below).

  This function can be modified by name/value pairs:
  Parameter (default)        | Description
  -------------------------------------------------------------
  algorithm ('DataHash/MD5') | Algorithm to be used, a string:
                             | 'DataHash/MD5':
                             |   Uses the third party tool DataHash,
                             |   to obtain the MD5 checksum of 
                             |   getByteStreamFromArray(D).
                             |   Returns a hexidecimal string.
                 | 'pm_hash/crc':
                             |   Uses the Matlab function PM_HASH.
                             |   Returns a 32 bit integer (uint32).
                             |   Requires Simulink and SimScape toolboxes.

  Warning: For many years, PM_HASH produced the same numbers across
  platforms and across versions. New versions (Matlab 2019a for instance) 
  now seems to produce PM_HASH numbers that differ from earlier versions.

  See https://undocumentedmatlab.com/articles/serializing-deserializing-matlab-data
  for information about the undocumented function getByteStreamFromArray
  function, upon which the default algorithm relies.

  See also: DataHash

  Example:
      A = randn(5,3,2); % a random number
      h = vlt.data.hashmatlabvariable(A) % generate a hash, a hexidecimal string
      h2 = vlt.data.hashmatlabvariable(A,'algorithm','pm_hash/crc') % require Simulink/SimScape; returns uint32