disnan.f.html

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<pre>
      LOGICAL FUNCTION <a name="DISNAN.1"></a><a href="disnan.f.html#DISNAN.1">DISNAN</a>(DIN)
<span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  -- LAPACK auxiliary routine (version 3.1) --
</span><span class="comment">*</span><span class="comment">     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
</span><span class="comment">*</span><span class="comment">     November 2006
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     .. Scalar Arguments ..
</span>      DOUBLE PRECISION DIN
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  Purpose
</span><span class="comment">*</span><span class="comment">  =======
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  <a name="DISNAN.14"></a><a href="disnan.f.html#DISNAN.1">DISNAN</a> returns .TRUE. if its argument is NaN, and .FALSE.
</span><span class="comment">*</span><span class="comment">  otherwise.  To be replaced by the Fortran 2003 intrinsic in the
</span><span class="comment">*</span><span class="comment">  future.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  Arguments
</span><span class="comment">*</span><span class="comment">  =========
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  DIN      (input) DOUBLE PRECISION
</span><span class="comment">*</span><span class="comment">          Input to test for NaN.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  =====================================================================
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  .. External Functions ..
</span>      LOGICAL <a name="DLAISNAN.27"></a><a href="dlaisnan.f.html#DLAISNAN.1">DLAISNAN</a>
      EXTERNAL <a name="DLAISNAN.28"></a><a href="dlaisnan.f.html#DLAISNAN.1">DLAISNAN</a>
<span class="comment">*</span><span class="comment">  ..
</span><span class="comment">*</span><span class="comment">  .. Executable Statements ..
</span>      <a name="DISNAN.31"></a><a href="disnan.f.html#DISNAN.1">DISNAN</a> = <a name="DLAISNAN.31"></a><a href="dlaisnan.f.html#DLAISNAN.1">DLAISNAN</a>(DIN,DIN)
      RETURN
      END

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