LOGICAL FUNCTION SLAISNAN(SIN1,SIN2)
*
* -- LAPACK auxiliary routine (version 3.2) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
* November 2006
*
* .. Scalar Arguments ..
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.
*
* =====================================================================
*
* .. Executable Statements ..
SLAISNAN = (SIN1.NE.SIN2)
RETURN
END