forked from lijiext/lammps
81 lines
2.0 KiB
FortranFixed
81 lines
2.0 KiB
FortranFixed
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*> \brief \b DISNAN tests input for NaN.
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*
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* =========== DOCUMENTATION ===========
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*
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* Online html documentation available at
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* http://www.netlib.org/lapack/explore-html/
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*
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*> \htmlonly
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*> Download DISNAN + dependencies
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/disnan.f">
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*> [TGZ]</a>
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/disnan.f">
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*> [ZIP]</a>
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*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/disnan.f">
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*> [TXT]</a>
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*> \endhtmlonly
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*
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* Definition:
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* ===========
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*
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* LOGICAL FUNCTION DISNAN( DIN )
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*
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* .. Scalar Arguments ..
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* DOUBLE PRECISION DIN
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* ..
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*
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*
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*> \par Purpose:
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* =============
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*>
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*> \verbatim
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*>
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*> DISNAN returns .TRUE. if its argument is NaN, and .FALSE.
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*> otherwise. To be replaced by the Fortran 2003 intrinsic in the
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*> future.
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*> \endverbatim
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*
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* Arguments:
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* ==========
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*
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*> \param[in] DIN
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*> \verbatim
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*> DIN is DOUBLE PRECISION
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*> Input to test for NaN.
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*> \endverbatim
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*
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* Authors:
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* ========
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*
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*> \author Univ. of Tennessee
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*> \author Univ. of California Berkeley
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*> \author Univ. of Colorado Denver
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*> \author NAG Ltd.
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*
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*> \date September 2012
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*
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*> \ingroup auxOTHERauxiliary
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*
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* =====================================================================
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LOGICAL FUNCTION DISNAN( DIN )
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*
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* -- LAPACK auxiliary routine (version 3.4.2) --
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* -- LAPACK is a software package provided by Univ. of Tennessee, --
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* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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* September 2012
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*
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* .. Scalar Arguments ..
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DOUBLE PRECISION DIN
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* ..
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*
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* =====================================================================
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*
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* .. External Functions ..
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LOGICAL DLAISNAN
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EXTERNAL DLAISNAN
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* ..
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* .. Executable Statements ..
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DISNAN = DLAISNAN(DIN,DIN)
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RETURN
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END
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