/*********************************************************************/
/* 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    */
/*    DISCLAIMED.  IN  NO EVENT SHALL THE UNIVERSITY  OF TEXAS AT    */
/*    AUSTIN OR CONTRIBUTORS BE  LIABLE FOR ANY DIRECT, INDIRECT,    */
/*    INCIDENTAL,  SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES    */
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/*    POSSIBILITY OF SUCH DAMAGE.                                    */
/*                                                                   */
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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 "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif

#ifndef CBLAS

void NAME(blasint *N, FLOAT *ALPHA, FLOAT *x, blasint *INCX){

  blasint n    = *N;
  blasint incx = *INCX;
  FLOAT alpha = *ALPHA;

#else

void CNAME(blasint n, FLOAT alpha, FLOAT *x, blasint incx){

#endif

#ifdef SMP
  int mode, nthreads;
#endif

#ifndef CBLAS
  PRINT_DEBUG_NAME;
#else
  PRINT_DEBUG_CNAME;
#endif

  if (incx <= 0 || n <= 0) return;

  if (alpha == ONE) return;

  IDEBUG_START;

  FUNCTION_PROFILE_START();


#ifdef SMP
  nthreads = num_cpu_avail(1);

  if (n <= 1048576 )
	nthreads = 1;

  if (nthreads == 1) {
#endif

  SCAL_K(n, 0, 0, alpha, x, incx, NULL, 0, NULL, 0);

#ifdef SMP
  } else {

#ifdef DOUBLE
    mode  =  BLAS_DOUBLE | BLAS_REAL;
#else
    mode  =  BLAS_SINGLE | BLAS_REAL;
#endif

    blas_level1_thread(mode, n, 0, 0,
#ifndef CBLAS
		       ALPHA,
#else
		       &alpha,
#endif
		       x, incx, NULL, 0, NULL, 0, (void *)SCAL_K, nthreads);

  }
#endif

  FUNCTION_PROFILE_END(1, n, n);

  IDEBUG_END;

  return;

}