slag2d.f.html

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      SUBROUTINE <a name="SLAG2D.1"></a><a href="slag2d.f.html#SLAG2D.1">SLAG2D</a>( M, N, SA, LDSA, A, LDA, INFO)
<span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  -- LAPACK PROTOTYPE auxiliary routine (version 3.1.1) --
</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">     January 2007
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">     .. WARNING: PROTOTYPE ..
</span><span class="comment">*</span><span class="comment">     This is an LAPACK PROTOTYPE routine which means that the
</span><span class="comment">*</span><span class="comment">     interface of this routine is likely to be changed in the future
</span><span class="comment">*</span><span class="comment">     based on community feedback.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     .. Scalar Arguments ..
</span>      INTEGER INFO,LDA,LDSA,M,N
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">     .. Array Arguments ..
</span>      REAL SA(LDSA,*)
      DOUBLE PRECISION A(LDA,*)
<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="SLAG2D.24"></a><a href="slag2d.f.html#SLAG2D.1">SLAG2D</a> converts a SINGLE PRECISION matrix, SA, to a DOUBLE
</span><span class="comment">*</span><span class="comment">  PRECISION matrix, A.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  Note that while it is possible to overflow while converting 
</span><span class="comment">*</span><span class="comment">  from double to single, it is not possible to overflow when
</span><span class="comment">*</span><span class="comment">  converting from single to double. 
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  This is a helper routine so there is no argument checking.
</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">  M       (input) INTEGER
</span><span class="comment">*</span><span class="comment">          The number of lines of the matrix A.  M &gt;= 0.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  N       (input) INTEGER
</span><span class="comment">*</span><span class="comment">          The number of columns of the matrix A.  N &gt;= 0.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  SA      (output) REAL array, dimension (LDSA,N)
</span><span class="comment">*</span><span class="comment">          On exit, the M-by-N coefficient matrix SA.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  LDSA    (input) INTEGER
</span><span class="comment">*</span><span class="comment">          The leading dimension of the array SA.  LDSA &gt;= max(1,M).
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  A       (input) DOUBLE PRECISION array, dimension (LDA,N)
</span><span class="comment">*</span><span class="comment">          On entry, the M-by-N coefficient matrix A.
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  LDA     (input) INTEGER
</span><span class="comment">*</span><span class="comment">          The leading dimension of the array A.  LDA &gt;= max(1,M).
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">  INFO    (output) INTEGER
</span><span class="comment">*</span><span class="comment">          = 0:  successful exit
</span><span class="comment">*</span><span class="comment">  =========
</span><span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     .. Local Scalars ..
</span>      INTEGER I,J
<span class="comment">*</span><span class="comment">     ..
</span><span class="comment">*</span><span class="comment">     .. Executable Statements ..
</span><span class="comment">*</span><span class="comment">
</span>      INFO = 0
      DO 20 J = 1,N
          DO 30 I = 1,M
              A(I,J) = SA(I,J)
   30     CONTINUE
   20 CONTINUE
      RETURN
<span class="comment">*</span><span class="comment">
</span><span class="comment">*</span><span class="comment">     End of <a name="SLAG2D.71"></a><a href="slag2d.f.html#SLAG2D.1">SLAG2D</a>
</span><span class="comment">*</span><span class="comment">
</span>      END

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