/*********************************************************************/

/* 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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/*    BUSINESS INTERRUPTION) HOWEVER CAUSED  AND ON ANY THEORY OF    */

/*    LIABILITY, WHETHER  IN CONTRACT, STRICT  LIABILITY, OR TORT    */

/*    (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY WAY OUT    */

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/*    POSSIBILITY OF SUCH DAMAGE.                                    */

/*                                                                   */

/* The views and conclusions contained in the software and           */

/* 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.                 */

/*********************************************************************/

#ifndef KERNEL_OPERATION

#ifndef COMPLEX

#define KERNEL_OPERATION(M, N, K, ALPHA, SA, SB, C, LDC, X, Y, FLAG) \

	KERNEL_FUNC(M, N, K, ALPHA[0], SA, SB, (FLOAT *)(C) + ((X) + (Y) * LDC) * COMPSIZE, LDC, (X) - (Y), FLAG)

#else

#define KERNEL_OPERATION(M, N, K, ALPHA, SA, SB, C, LDC, X, Y, FLAG) \

	KERNEL_FUNC(M, N, K, ALPHA[0], ALPHA[1], SA, SB, (FLOAT *)(C) + ((X) + (Y) * LDC) * COMPSIZE, LDC, (X) - (Y), FLAG)

#endif

#endif

#ifndef KERNEL_OPERATION_C

#define KERNEL_OPERATION_C KERNEL_OPERATION

#endif

#ifndef ICOPY_OPERATION

#ifndef TRANS

#define ICOPY_OPERATION(M, N, A, LDA, X, Y, BUFFER) GEMM_ITCOPY(M, N, (FLOAT *)(A) + ((Y) + (X) * (LDA)) * COMPSIZE, LDA, BUFFER);

#else

#define ICOPY_OPERATION(M, N, A, LDA, X, Y, BUFFER) GEMM_INCOPY(M, N, (FLOAT *)(A) + ((X) + (Y) * (LDA)) * COMPSIZE, LDA, BUFFER);

#endif

#endif

#ifndef OCOPY_OPERATION

#ifdef TRANS

#define OCOPY_OPERATION(M, N, A, LDA, X, Y, BUFFER) GEMM_ONCOPY(M, N, (FLOAT *)(A) + ((X) + (Y) * (LDA)) * COMPSIZE, LDA, BUFFER);

#else

#define OCOPY_OPERATION(M, N, A, LDA, X, Y, BUFFER) GEMM_OTCOPY(M, N, (FLOAT *)(A) + ((Y) + (X) * (LDA)) * COMPSIZE, LDA, BUFFER);

#endif

#endif

#ifndef M

#define M	args -> n

#endif

#ifndef N

#define N	args -> n

#endif

#ifndef K

#define K	args -> k

#endif

#ifndef A

#define A	args -> a

#endif

#ifndef B

#define B	args -> b

#endif

#ifndef C

#define C	args -> c

#endif

#ifndef LDA

#define LDA	args -> lda

#endif

#ifndef LDB

#define LDB	args -> ldb

#endif

#ifndef LDC

#define LDC	args -> ldc

#endif

int CNAME(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *sa, FLOAT *sb, BLASLONG dummy) {

  BLASLONG m_from, m_to, n_from, n_to, k, lda, ldb, ldc;

  FLOAT *a, *b, *c, *alpha, *beta;

  BLASLONG ls, is, js;

  BLASLONG min_l, min_i, min_j;

  BLASLONG jjs, min_jj;

  BLASLONG m_start, m_end;

  FLOAT *aa;

  k = K;

  a = (FLOAT *)A;

  b = (FLOAT *)B;

  c = (FLOAT *)C;

  lda = LDA;

  ldb = LDB;

  ldc = LDC;

  alpha = (FLOAT *)args -> alpha;

  beta  = (FLOAT *)args -> beta;

  m_from = 0;

  m_to   = M;

  if (range_m) {

    m_from = *(((BLASLONG *)range_m) + 0);

    m_to   = *(((BLASLONG *)range_m) + 1);

  }

  n_from = 0;

  n_to   = N;

  if (range_n) {

    n_from = *(((BLASLONG *)range_n) + 0);

    n_to   = *(((BLASLONG *)range_n) + 1);

  }

  if (beta) {

#if !defined(COMPLEX) || defined(HER2K)

    if (beta[0] != ONE)

#else

    if ((beta[0] != ONE) || (beta[1] != ZERO))

#endif

      syrk_beta(m_from, m_to, n_from, n_to, beta, c, ldc);

  }

  if ((k == 0) || (alpha == NULL)) return 0;

  if ((alpha[0] == ZERO)

#ifdef COMPLEX

      && (alpha[1] == ZERO)

#endif

      ) return 0;

  for(js = n_from; js < n_to; js += GEMM_R){

    min_j = n_to - js;

    if (min_j > GEMM_R) min_j = GEMM_R;

#ifndef LOWER

    m_start = m_from;

    m_end   = js + min_j;

    if (m_end > m_to) m_end = m_to;

#else

    m_start = m_from;

    m_end   = m_to;

    if (m_start < js) m_start = js;

#endif

    for(ls = 0; ls < k; ls += min_l){

      min_l = k - ls;

      if (min_l >= GEMM_Q * 2) {

	min_l = GEMM_Q;

      } else 

	if (min_l > GEMM_Q) {

	  min_l = (min_l + 1) / 2;

	}

      min_i = m_end - m_start;

      if (min_i >= GEMM_P * 2) {

	min_i = GEMM_P;

      } else 

	if (min_i > GEMM_P) {

	  min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	}

#ifndef LOWER

      if (m_start >= js) {

	ICOPY_OPERATION(min_l, min_i, a, lda, ls, m_start, sa);

	aa = sb + min_l * (m_start - js)  * COMPSIZE;

	OCOPY_OPERATION(min_l, min_i, b, ldb, ls, m_start, aa);

	KERNEL_OPERATION(min_i, min_i, min_l, alpha, sa, aa, c, ldc, m_start, m_start, 1);

	jjs = m_start + min_i;

      } else {

	ICOPY_OPERATION(min_l, min_i, a, lda, ls, m_start, sa);

	jjs = js;

      }

      for(; jjs < js + min_j; jjs += GEMM_UNROLL_MN){

	min_jj = min_j + js - jjs;

	if (min_jj > GEMM_UNROLL_MN) min_jj = GEMM_UNROLL_MN;

	OCOPY_OPERATION(min_l, min_jj, b, ldb, ls, jjs, sb + min_l * (jjs - js) * COMPSIZE);

	KERNEL_OPERATION(min_i, min_jj, min_l, alpha,

			 sa, sb + min_l * (jjs - js)  * COMPSIZE,

			 c, ldc, m_start, jjs, 1);

      }

      for(is = m_start + min_i; is < m_end; is += min_i){

	min_i = m_end - is;

	if (min_i >= GEMM_P * 2) {

	  min_i = GEMM_P;

	} else 

	  if (min_i > GEMM_P) {

	    min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	  }

	ICOPY_OPERATION(min_l, min_i, a, lda, ls, is, sa);

	KERNEL_OPERATION(min_i, min_j, min_l, alpha, sa, sb, c, ldc, is, js, 1);

      }

      min_i = m_end - m_start;

      if (min_i >= GEMM_P * 2) {

	min_i = GEMM_P;

      } else 

	if (min_i > GEMM_P) {

	  min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	}

      if (m_start >= js) {

	ICOPY_OPERATION(min_l, min_i, b, ldb, ls, m_start, sa);

	aa = sb + min_l * (m_start - js)  * COMPSIZE;

	OCOPY_OPERATION(min_l, min_i, a, lda, ls, m_start, aa);

	KERNEL_OPERATION_C(min_i, min_i, min_l, alpha, sa, aa, c, ldc, m_start, m_start, 0);

	jjs = m_start + min_i;

      } else {

	ICOPY_OPERATION(min_l, min_i, b, ldb, ls, m_start, sa);

	jjs = js;

      }

      for(; jjs < js + min_j; jjs += GEMM_UNROLL_MN){

	min_jj = min_j + js - jjs;

	if (min_jj > GEMM_UNROLL_MN) min_jj = GEMM_UNROLL_MN;

	OCOPY_OPERATION(min_l, min_jj, a, lda, ls, jjs, sb + min_l * (jjs - js) * COMPSIZE);

	KERNEL_OPERATION_C(min_i, min_jj, min_l, alpha,

			 sa, sb + min_l * (jjs - js)  * COMPSIZE,

			 c, ldc, m_start, jjs, 0);

      }

      for(is = m_start + min_i; is < m_end; is += min_i){

	min_i = m_end - is;

	if (min_i >= GEMM_P * 2) {

	  min_i = GEMM_P;

	} else 

	  if (min_i > GEMM_P) {

	    min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	  }

	ICOPY_OPERATION(min_l, min_i, b, ldb, ls, is, sa);

	KERNEL_OPERATION_C(min_i, min_j, min_l, alpha, sa, sb, c, ldc, is, js, 0);

      }

#else

      aa = sb + min_l * (m_start - js) * COMPSIZE;

      ICOPY_OPERATION(min_l, min_i, a, lda, ls, m_start, sa);

      OCOPY_OPERATION(min_l, min_i, b, ldb, ls, m_start, aa);

      KERNEL_OPERATION(min_i, MIN(min_i, min_j + js - m_start), min_l, alpha,

		       sa, aa, c, ldc, m_start, m_start, 1);

      for(jjs = js; jjs < m_start; jjs += GEMM_UNROLL_MN){

	min_jj = m_start - jjs;

	if (min_jj > GEMM_UNROLL_MN) min_jj = GEMM_UNROLL_MN;

	OCOPY_OPERATION(min_l, min_jj, b, ldb, ls, jjs, sb + min_l * (jjs - js) * COMPSIZE);

	KERNEL_OPERATION(min_i, min_jj, min_l, alpha,

			 sa, sb + min_l * (jjs - js)  * COMPSIZE, c, ldc, m_start, jjs, 1);

      }

      for(is = m_start + min_i; is < m_end; is += min_i){

	min_i = m_end - is;

	if (min_i >= GEMM_P * 2) {

	  min_i = GEMM_P;

	} else 

	  if (min_i > GEMM_P) {

	    min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	  }

	aa = sb + min_l * (is - js) * COMPSIZE;

	if (is  < js + min_j) {

	  ICOPY_OPERATION(min_l, min_i, a, lda, ls, is, sa);

	  OCOPY_OPERATION(min_l, min_i, b, ldb, ls, is, aa);

	  KERNEL_OPERATION(min_i, MIN(min_i, min_j - is + js), min_l, alpha,  sa, aa,  c, ldc, is, is, 1);

	  KERNEL_OPERATION(min_i, is - js, min_l, alpha, sa, sb,  c, ldc, is, js, 1);

	  } else {

	    ICOPY_OPERATION(min_l, min_i, a, lda, ls, is, sa);

	    KERNEL_OPERATION(min_i, min_j, min_l, alpha, sa, sb,  c, ldc, is, js, 1);

	  }

      }

      min_i = m_end - m_start;

      if (min_i >= GEMM_P * 2) {

	min_i = GEMM_P;

      } else 

	if (min_i > GEMM_P) {

	  min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	}

      aa = sb + min_l * (m_start - js) * COMPSIZE;

      ICOPY_OPERATION(min_l, min_i, b, ldb, ls, m_start, sa);

      OCOPY_OPERATION(min_l, min_i, a, lda, ls, m_start, aa);

      KERNEL_OPERATION_C(min_i, MIN(min_i, min_j + js - m_start), min_l, alpha,

		       sa, aa, c, ldc, m_start, m_start, 0);

      for(jjs = js; jjs < m_start; jjs += GEMM_UNROLL_MN){

	min_jj = m_start - jjs;

	if (min_jj > GEMM_UNROLL_MN) min_jj = GEMM_UNROLL_MN;

	OCOPY_OPERATION(min_l, min_jj, a, lda, ls, jjs, sb + min_l * (jjs - js) * COMPSIZE);

	KERNEL_OPERATION_C(min_i, min_jj, min_l, alpha,

			 sa, sb + min_l * (jjs - js)  * COMPSIZE, c, ldc, m_start, jjs, 0);

      }

      for(is = m_start + min_i; is < m_end; is += min_i){

	min_i = m_end - is;

	if (min_i >= GEMM_P * 2) {

	  min_i = GEMM_P;

	} else 

	  if (min_i > GEMM_P) {

	    min_i = (min_i / 2 + GEMM_UNROLL_MN - 1) & ~(GEMM_UNROLL_MN - 1);

	  }

	aa = sb + min_l * (is - js) * COMPSIZE;

	if (is  < js + min_j) {

	  ICOPY_OPERATION(min_l, min_i, b, ldb, ls, is, sa);

	  OCOPY_OPERATION(min_l, min_i, a, lda, ls, is, aa);

	  KERNEL_OPERATION_C(min_i, MIN(min_i, min_j - is + js), min_l, alpha,  sa, aa,  c, ldc, is, is, 0);

	  KERNEL_OPERATION_C(min_i, is - js, min_l, alpha, sa, sb,  c, ldc, is, js, 0);

	  } else {

	    ICOPY_OPERATION(min_l, min_i, b, ldb, ls, is, sa);

	    KERNEL_OPERATION_C(min_i, min_j, min_l, alpha, sa, sb,  c, ldc, is, js, 0);

	  }

      }

#endif

    }

  }

  return 0;

}