mirror of
https://github.com/gonum/gonum.git
synced 2025-11-01 02:52:49 +08:00
81 lines
2.0 KiB
Fortran
81 lines
2.0 KiB
Fortran
*> \brief \b DISNAN tests input for NaN.
|
|
*
|
|
* =========== DOCUMENTATION ===========
|
|
*
|
|
* Online html documentation available at
|
|
* http://www.netlib.org/lapack/explore-html/
|
|
*
|
|
*> \htmlonly
|
|
*> Download DISNAN + dependencies
|
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/disnan.f">
|
|
*> [TGZ]</a>
|
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/disnan.f">
|
|
*> [ZIP]</a>
|
|
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/disnan.f">
|
|
*> [TXT]</a>
|
|
*> \endhtmlonly
|
|
*
|
|
* Definition:
|
|
* ===========
|
|
*
|
|
* LOGICAL FUNCTION DISNAN( DIN )
|
|
*
|
|
* .. Scalar Arguments ..
|
|
* DOUBLE PRECISION DIN
|
|
* ..
|
|
*
|
|
*
|
|
*> \par Purpose:
|
|
* =============
|
|
*>
|
|
*> \verbatim
|
|
*>
|
|
*> DISNAN returns .TRUE. if its argument is NaN, and .FALSE.
|
|
*> otherwise. To be replaced by the Fortran 2003 intrinsic in the
|
|
*> future.
|
|
*> \endverbatim
|
|
*
|
|
* Arguments:
|
|
* ==========
|
|
*
|
|
*> \param[in] DIN
|
|
*> \verbatim
|
|
*> DIN is DOUBLE PRECISION
|
|
*> Input to test for NaN.
|
|
*> \endverbatim
|
|
*
|
|
* Authors:
|
|
* ========
|
|
*
|
|
*> \author Univ. of Tennessee
|
|
*> \author Univ. of California Berkeley
|
|
*> \author Univ. of Colorado Denver
|
|
*> \author NAG Ltd.
|
|
*
|
|
*> \date September 2012
|
|
*
|
|
*> \ingroup auxOTHERauxiliary
|
|
*
|
|
* =====================================================================
|
|
LOGICAL FUNCTION DISNAN( DIN )
|
|
*
|
|
* -- LAPACK auxiliary routine (version 3.4.2) --
|
|
* -- LAPACK is a software package provided by Univ. of Tennessee, --
|
|
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
|
|
* September 2012
|
|
*
|
|
* .. Scalar Arguments ..
|
|
DOUBLE PRECISION DIN
|
|
* ..
|
|
*
|
|
* =====================================================================
|
|
*
|
|
* .. External Functions ..
|
|
LOGICAL DLAISNAN
|
|
EXTERNAL DLAISNAN
|
|
* ..
|
|
* .. Executable Statements ..
|
|
DISNAN = DLAISNAN(DIN,DIN)
|
|
RETURN
|
|
END
|