sisnan()

logical function sisnan

(

real, intent(in)

sin

)

SISNAN tests input for NaN.

Download SISNAN + dependencies [TGZ] [ZIP] [TXT]

Purpose:

!>
!> SISNAN returns .TRUE. if its argument is NaN, and .FALSE.
!> otherwise.  To be replaced by the Fortran 2003 intrinsic in the
!> future.
!> 

Parameters

[in]

SIN

!> SIN is REAL !> Input to test for NaN. !>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 56 of file sisnan.f.

*
*  -- LAPACK auxiliary routine --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
*     .. Scalar Arguments ..
      REAL, INTENT(IN) :: SIN
*     ..
*
*  =====================================================================
*
*  .. External Functions ..
      LOGICAL SLAISNAN
      EXTERNAL slaisnan
*  ..
*  .. Executable Statements ..
      sisnan = slaisnan(sin,sin)
      RETURN

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