! Copyright (c) 2013 Harald Klimach <harald.klimach@uni-siegen.de>
! Copyright (c) 2013 Simon Zimny <s.zimny@grs-sim.de>
! Copyright (c) 2016 Tobias Schneider <tobias1.schneider@student.uni-siegen.de>
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
!
! 1. Redistributions of source code must retain the above copyright notice, this
! list of conditions and the following disclaimer.
!
! 2. Redistributions in binary form must reproduce the above copyright notice,
! this list of conditions and the following disclaimer in the documentation
! and/or other materials provided with the distribution.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
! FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
! CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
! OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
! OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! ****************************************************************************** !
!> This module encapsulates the available isNaN implementation
!!
!! Here we use the vendor specific isNaN, as the IEEE version
!! is not supported by the compiler.
!!
module tem_isNaN_module

  ! include treelm modules
  use env_module, only: rk

  implicit none

  private

  public :: tem_isNaN

  contains

! ****************************************************************************** !
  elemental function tem_isNaN(num) result(noNumber)
    !---------------------------------------------------------------------------
    real(kind=rk), intent(in) :: num
    logical :: noNumber
    !---------------------------------------------------------------------------

    noNumber = isNaN(num)

  end function tem_isNaN
! ****************************************************************************** !


end module tem_isNaN_module
! ****************************************************************************** !
