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/* ---------------------------------------------------------------------
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* -- Automatically Tuned Linear Algebra Software (ATLAS)
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* (C) Copyright 2000 All Rights Reserved
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* -- ATLAS routine -- Version 3.2 -- December 15, 2000
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* -- Suggestions, comments, bugs reports should be sent to the follo-
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* wing e-mail address: atlas@cs.utk.edu
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* Author : Antoine P. Petitet
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* University of Tennessee - Innovative Computing Laboratory
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* Knoxville TN, 37996-1301, USA.
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* ---------------------------------------------------------------------
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* -- Copyright notice and Licensing terms:
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions, and the following disclaimer in
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* the documentation and/or other materials provided with the distri-
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* 3. The name of the University, the ATLAS group, or the names of its
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* contributors may not be used to endorse or promote products deri-
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* ved from this software without specific written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
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* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEO-
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* RY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (IN-
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* CLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ---------------------------------------------------------------------
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#include "atlas_refmisc.h"
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#include "atlas_reflvl2.h"
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#include "atlas_reflevel2.h"
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* ATL_drefspmvL( ... )
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* ATL_drefspmv( AtlasLower, ... )
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* See ATL_drefspmv for details.
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* ---------------------------------------------------------------------
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* .. Local Variables ..
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register double t0, t1;
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int i, iaij, ix, iy, j, jaj = 0, jx, jy, lda = LDA;
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* .. Executable Statements ..
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Mdvscal( N, BETA, Y, INCY );
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for( j = 0, jx = 0, jy = 0; j < N; j++, jx += INCX, jy += INCY )
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t0 = ALPHA * X[jx]; t1 = ATL_dZERO; Y[jy] += t0 * A[jaj];
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for( i = j+1, iaij = jaj+1, ix = jx+INCX, iy = jy+INCY;
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i < N; i++, iaij += 1, ix += INCX, iy += INCY )
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{ Y[iy] += t0 * A[iaij]; t1 += A[iaij] * X[ix]; }
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Y[jy] += ALPHA * t1; jaj += lda; lda -= 1;
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* End of ATL_drefspmvL