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NAME

       LAPACK-3 - routine i not for general use

SYNOPSIS

       LOGICAL FUNCTION SLAISNAN( SIN1, SIN2 )

           REAL         SIN1, SIN2

PURPOSE

       This routine is not for general use.  It exists solely to avoid
        over-optimization in SISNAN.
        SLAISNAN checks for NaNs by comparing its two arguments for
        inequality.  NaN is the only floating-point value where NaN != NaN
        returns .TRUE.  To check for NaNs, pass the same variable as both
        arguments.
        A compiler must assume that the two arguments are
        not the same variable, and the test will not be optimized away.
        Interprocedural or whole-program optimization may delete this
        test.  The ISNAN functions will be replaced by the correct
        Fortran 03 intrinsic once the intrinsic is widely available.

ARGUMENTS

        SIN1     (input) REAL

        SIN2     (input) REAL
                 Two numbers to compare for inequality.

 LAPACK auxiliary routine (version 3.2.2)   April 2011                          SLAISNAN(3lapack)