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Annotation of rpl/lapack/lapack/disnan.f, revision 1.7

1.5       bertrand    1:       LOGICAL FUNCTION DISNAN( DIN )
1.1       bertrand    2: *
1.5       bertrand    3: *  -- LAPACK auxiliary routine (version 3.2.2) --
1.1       bertrand    4: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
                      5: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
1.5       bertrand    6: *     June 2010
1.1       bertrand    7: *
                      8: *     .. Scalar Arguments ..
1.5       bertrand    9:       DOUBLE PRECISION   DIN
1.1       bertrand   10: *     ..
                     11: *
                     12: *  Purpose
                     13: *  =======
                     14: *
                     15: *  DISNAN returns .TRUE. if its argument is NaN, and .FALSE.
                     16: *  otherwise.  To be replaced by the Fortran 2003 intrinsic in the
                     17: *  future.
                     18: *
                     19: *  Arguments
                     20: *  =========
                     21: *
1.5       bertrand   22: *  DIN     (input) DOUBLE PRECISION
1.1       bertrand   23: *          Input to test for NaN.
                     24: *
                     25: *  =====================================================================
                     26: *
                     27: *  .. External Functions ..
                     28:       LOGICAL DLAISNAN
                     29:       EXTERNAL DLAISNAN
                     30: *  ..
                     31: *  .. Executable Statements ..
                     32:       DISNAN = DLAISNAN(DIN,DIN)
                     33:       RETURN
                     34:       END