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## psb_cdfree -- Frees a communication descriptor

    call psb_cdfree(desc_a, info)

Type:
  Synchronous.
On Entry
desc_a
  the communication descriptor to be freed.
  Scope:local.
  Type:required.
  Intent: inout.
  Specified as: a structured data of type descdata`psb_desc_type`.

On Return
info
  Error code.
  Scope: local
  Type: required
  Intent: out.
  An integer value; 0 means no error has been detected.