/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
/* All rights reserved.                                              */
/*                                                                   */
/* Redistribution and use in source and binary forms, with or        */
/* without modification, are permitted provided that the following   */
/* conditions are met:                                               */
/*                                                                   */
/*   1. Redistributions of source code must retain the above         */
/*      copyright notice, this list of conditions and the following  */
/*      disclaimer.                                                  */
/*                                                                   */
/*   2. Redistributions in binary form must reproduce the above      */
/*      copyright notice, this list of conditions and the following  */
/*      disclaimer in the documentation and/or other materials       */
/*      provided with the distribution.                              */
/*                                                                   */
/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */
/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */
/*    INCLUDING, BUT  NOT LIMITED  TO, THE IMPLIED  WARRANTIES OF    */
/*    MERCHANTABILITY  AND FITNESS FOR  A PARTICULAR  PURPOSE ARE    */
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/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */
/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */
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/*                                                                   */
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/* documentation are those of the authors and should not be          */
/* interpreted as representing official policies, either expressed   */
/* or implied, of The University of Texas at Austin.                 */
/*********************************************************************/

#include <stdio.h>
#include <ctype.h>
#include "common.h"

int CNAME(BLASLONG m, FLOAT alpha, FLOAT *a,
	  FLOAT *x, BLASLONG incx, FLOAT *y, BLASLONG incy, void *buffer){

  BLASLONG i;
  FLOAT *X = x;
  FLOAT *Y = y;
  FLOAT *gemvbuffer = (FLOAT *)buffer;
  FLOAT *bufferY    = gemvbuffer;
  FLOAT *bufferX    = gemvbuffer;

  if (incy != 1) {
    Y = bufferY;
    bufferX    = (FLOAT *)(((BLASLONG)bufferY + m * sizeof(FLOAT) + 4095) & ~4095);
    gemvbuffer = bufferX;
    COPY_K(m, y, incy, Y, 1);
  }

  if (incx != 1) {
    X = bufferX;
    gemvbuffer = (FLOAT *)(((BLASLONG)bufferX + m * sizeof(FLOAT) + 4095) & ~4095);
    COPY_K(m, x, incx, X, 1);
  }

  for (i = 0; i < m; i++) {
#ifndef LOWER
    if (i > 0) Y[i] += alpha * DOTU_K(i, a, 1, X, 1);
    AXPYU_K(i + 1, 0, 0, alpha * X[i], a, 1, Y, 1, NULL, 0);
    a += i + 1;
    
#else
    Y[i] += alpha * DOTU_K(m - i, a + i, 1, X + i, 1);
    if (m - i > 1) AXPYU_K(m - i - 1, 0, 0, alpha * X[i],
			  a + i + 1, 1, Y + i + 1, 1, NULL, 0);
    a += m - i - 1;
#endif
  }

  if (incy != 1) {
    COPY_K(m, Y, 1, y, incy);
  }

  return 0;
}