--- 
:name: sisnan
:md5sum: 59f568b95ecad80e459328f43736527e
:category: :function
:type: logical
:arguments: 
- sin: 
    :type: real
    :intent: input
:substitutions: {}

:fortran_help: "      LOGICAL FUNCTION SISNAN( SIN )\n\n\
  *  Purpose\n\
  *  =======\n\
  *\n\
  *  SISNAN returns .TRUE. if its argument is NaN, and .FALSE.\n\
  *  otherwise.  To be replaced by the Fortran 2003 intrinsic in the\n\
  *  future.\n\
  *\n\n\
  *  Arguments\n\
  *  =========\n\
  *\n\
  *  SIN     (input) REAL\n\
  *          Input to test for NaN.\n\
  *\n\n\
  *  =====================================================================\n\
  *\n\
  *  .. External Functions ..\n      LOGICAL SLAISNAN\n      EXTERNAL SLAISNAN\n\
  *  ..\n"
