/*******************************************************************************
Copyright (c) 2024, The OpenBLAS Project
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.
3. Neither the name of the OpenBLAS project nor the names of
its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OPENBLAS PROJECT OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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*******************************************************************************/

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

int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, BLASLONG posX, BLASLONG posY, FLOAT *b){

  BLASLONG i, js, offset;

  FLOAT data01, data02, data03, data04, data05, data06, data07, data08;
  FLOAT data09, data10, data11, data12, data13, data14, data15, data16;
  FLOAT data17, data18, data19, data20, data21, data22, data23, data24;
  FLOAT data25, data26, data27, data28, data29, data30, data31, data32;

  FLOAT *ao1, *ao2,  *ao3,  *ao4,  *ao5,  *ao6,  *ao7,  *ao8;
  FLOAT *ao9, *ao10, *ao11, *ao12, *ao13, *ao14, *ao15, *ao16;

  lda *= 2;

  js = (n >> 4);
  while (js > 0){

    offset = posX - posY;

    if (offset >  0) ao1 = a + posY * 2 + (posX + 0) * lda; else ao1 = a + (posX + 0) * 2 + posY * lda;
    if (offset > -1) ao2 = a + posY * 2 + (posX + 1) * lda; else ao2 = a + (posX + 1) * 2 + posY * lda;
    if (offset > -2) ao3 = a + posY * 2 + (posX + 2) * lda; else ao3 = a + (posX + 2) * 2 + posY * lda;
    if (offset > -3) ao4 = a + posY * 2 + (posX + 3) * lda; else ao4 = a + (posX + 3) * 2 + posY * lda;
    if (offset > -4) ao5 = a + posY * 2 + (posX + 4) * lda; else ao5 = a + (posX + 4) * 2 + posY * lda;
    if (offset > -5) ao6 = a + posY * 2 + (posX + 5) * lda; else ao6 = a + (posX + 5) * 2 + posY * lda;
    if (offset > -6) ao7 = a + posY * 2 + (posX + 6) * lda; else ao7 = a + (posX + 6) * 2 + posY * lda;
    if (offset > -7) ao8 = a + posY * 2 + (posX + 7) * lda; else ao8 = a + (posX + 7) * 2 + posY * lda;
	if (offset > -8) ao9 = a + posY * 2 + (posX + 8) * lda; else ao9 = a + (posX + 8) * 2 + posY * lda;
    if (offset > -9) ao10 = a + posY * 2 + (posX + 9) * lda; else ao10 = a + (posX + 9) * 2 + posY * lda;
    if (offset > -10) ao11 = a + posY * 2 + (posX + 10) * lda; else ao11 = a + (posX + 10) * 2 + posY * lda;
    if (offset > -11) ao12 = a + posY * 2 + (posX + 11) * lda; else ao12 = a + (posX + 11) * 2 + posY * lda;
    if (offset > -12) ao13 = a + posY * 2 + (posX + 12) * lda; else ao13 = a + (posX + 12) * 2 + posY * lda;
    if (offset > -13) ao14 = a + posY * 2 + (posX + 13) * lda; else ao14 = a + (posX + 13) * 2 + posY * lda;
    if (offset > -14) ao15 = a + posY * 2 + (posX + 14) * lda; else ao15 = a + (posX + 14) * 2 + posY * lda;
    if (offset > -15) ao16 = a + posY * 2 + (posX + 15) * lda; else ao16 = a + (posX + 15) * 2 + posY * lda;

    i     = m;

    while (i > 0) {
      data01 = *(ao1 + 0);
      data02 = *(ao1 + 1);
      data03 = *(ao2 + 0);
      data04 = *(ao2 + 1);
      data05 = *(ao3 + 0);
      data06 = *(ao3 + 1);
      data07 = *(ao4 + 0);
      data08 = *(ao4 + 1);
      data09 = *(ao5 + 0);
      data10 = *(ao5 + 1);
      data11 = *(ao6 + 0);
      data12 = *(ao6 + 1);
      data13 = *(ao7 + 0);
      data14 = *(ao7 + 1);
      data15 = *(ao8 + 0);
      data16 = *(ao8 + 1);
	  data17 = *(ao9 + 0);
      data18 = *(ao9 + 1);
      data19 = *(ao10 + 0);
      data20 = *(ao10 + 1);
      data21 = *(ao11 + 0);
      data22 = *(ao11 + 1);
      data23 = *(ao12 + 0);
      data24 = *(ao12 + 1);
      data25 = *(ao13 + 0);
      data26 = *(ao13 + 1);
      data27 = *(ao14 + 0);
      data28 = *(ao14 + 1);
      data29 = *(ao15 + 0);
      data30 = *(ao15 + 1);
      data31 = *(ao16 + 0);
      data32 = *(ao16 + 1);

      if (offset >   0) ao1 += 2; else ao1 += lda;
      if (offset >  -1) ao2 += 2; else ao2 += lda;
      if (offset >  -2) ao3 += 2; else ao3 += lda;
      if (offset >  -3) ao4 += 2; else ao4 += lda;
      if (offset >  -4) ao5 += 2; else ao5 += lda;
      if (offset >  -5) ao6 += 2; else ao6 += lda;
      if (offset >  -6) ao7 += 2; else ao7 += lda;
      if (offset >  -7) ao8 += 2; else ao8 += lda;
	  if (offset >  -8) ao9 += 2; else ao9 += lda;
      if (offset >  -9) ao10 += 2; else ao10 += lda;
      if (offset >  -10) ao11 += 2; else ao11 += lda;
      if (offset >  -11) ao12 += 2; else ao12 += lda;
      if (offset >  -12) ao13 += 2; else ao13 += lda;
      if (offset >  -13) ao14 += 2; else ao14 += lda;
      if (offset >  -14) ao15 += 2; else ao15 += lda;
      if (offset >  -15) ao16 += 2; else ao16 += lda;

      if (offset > 0) {
	b[ 0] = data01;
	b[ 1] = -data02;
	b[ 2] = data03;
	b[ 3] = -data04;
	b[ 4] = data05;
	b[ 5] = -data06;
	b[ 6] = data07;
	b[ 7] = -data08;
	b[ 8] = data09;
	b[ 9] = -data10;
	b[10] = data11;
	b[11] = -data12;
	b[12] = data13;
	b[13] = -data14;
	b[14] = data15;
	b[15] = -data16;
	b[16] = data17;
	b[17] = -data18;
	b[18] = data19;
	b[19] = -data20;
	b[20] = data21;
	b[21] = -data22;
	b[22] = data23;
	b[23] = -data24;
	b[24] = data25;
	b[25] = -data26;
	b[26] = data27;
	b[27] = -data28;
	b[28] = data29;
	b[29] = -data30;
	b[30] = data31;
	b[31] = -data32;
      } else
	if (offset < -15) {
	  b[ 0] = data01;
	  b[ 1] = data02;
	  b[ 2] = data03;
	  b[ 3] = data04;
	  b[ 4] = data05;
	  b[ 5] = data06;
	  b[ 6] = data07;
	  b[ 7] = data08;
	  b[ 8] = data09;
	  b[ 9] = data10;
	  b[10] = data11;
	  b[11] = data12;
	  b[12] = data13;
	  b[13] = data14;
	  b[14] = data15;
	  b[15] = data16;
	  b[16] = data17;
	b[17] = data18;
	b[18] = data19;
	b[19] = data20;
	b[20] = data21;
	b[21] = data22;
	b[22] = data23;
	b[23] = data24;
	b[24] = data25;
	b[25] = data26;
	b[26] = data27;
	b[27] = data28;
	b[28] = data29;
	b[29] = data30;
	b[30] = data31;
	b[31] = data32;
	} else {
	  switch (offset) {
	  case  0 :
	    b[ 0] = data01;
	    b[ 1] = ZERO;
	    b[ 2] = data03;
	    b[ 3] = -data04;
	    b[ 4] = data05;
	    b[ 5] = -data06;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -1 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = ZERO;
	    b[ 4] = data05;
	    b[ 5] = -data06;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -2 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = ZERO;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -3 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = ZERO;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -4 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = ZERO;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -5 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = ZERO;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -6 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = ZERO;
	    b[14] = data15;
	    b[15] = -data16;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	  case -7 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = ZERO;
		b[16] = data17;
		b[17] = -data18;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -8 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = ZERO;
		b[18] = data19;
		b[19] = -data20;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -9 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = ZERO;
		b[20] = data21;
		b[21] = -data22;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -10 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = data20;
		b[20] = data21;
		b[21] = ZERO;
		b[22] = data23;
		b[23] = -data24;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -11 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = data20;
		b[20] = data21;
		b[21] = data22;
		b[22] = data23;
		b[23] = ZERO;
		b[24] = data25;
		b[25] = -data26;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -12 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = data20;
		b[20] = data21;
		b[21] = data22;
		b[22] = data23;
		b[23] = data24;
		b[24] = data25;
		b[25] = ZERO;
		b[26] = data27;
		b[27] = -data28;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -13 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = data20;
		b[20] = data21;
		b[21] = data22;
		b[22] = data23;
		b[23] = data24;
		b[24] = data25;
		b[25] = data26;
		b[26] = data27;
		b[27] = ZERO;
		b[28] = data29;
		b[29] = -data30;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -14 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = data20;
		b[20] = data21;
		b[21] = data22;
		b[22] = data23;
		b[23] = data24;
		b[24] = data25;
		b[25] = data26;
		b[26] = data27;
		b[27] = data28;
		b[28] = data29;
		b[29] = ZERO;
		b[30] = data31;
		b[31] = -data32;
	    break;
	case -15 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = data16;
		b[16] = data17;
		b[17] = data18;
		b[18] = data19;
		b[19] = data20;
		b[20] = data21;
		b[21] = data22;
		b[22] = data23;
		b[23] = data24;
		b[24] = data25;
		b[25] = data26;
		b[26] = data27;
		b[27] = data28;
		b[28] = data29;
		b[29] = data30;
		b[30] = data31;
		b[31] = ZERO;
	    break;
	  }
	}

      b += 32;

      offset --;
      i --;
    }

    posX += 16;
    js --;
  }

  if (n & 8) {
	offset = posX - posY;

    if (offset >  0) ao1 = a + posY * 2 + (posX + 0) * lda; else ao1 = a + (posX + 0) * 2 + posY * lda;
    if (offset > -1) ao2 = a + posY * 2 + (posX + 1) * lda; else ao2 = a + (posX + 1) * 2 + posY * lda;
    if (offset > -2) ao3 = a + posY * 2 + (posX + 2) * lda; else ao3 = a + (posX + 2) * 2 + posY * lda;
    if (offset > -3) ao4 = a + posY * 2 + (posX + 3) * lda; else ao4 = a + (posX + 3) * 2 + posY * lda;
    if (offset > -4) ao5 = a + posY * 2 + (posX + 4) * lda; else ao5 = a + (posX + 4) * 2 + posY * lda;
    if (offset > -5) ao6 = a + posY * 2 + (posX + 5) * lda; else ao6 = a + (posX + 5) * 2 + posY * lda;
    if (offset > -6) ao7 = a + posY * 2 + (posX + 6) * lda; else ao7 = a + (posX + 6) * 2 + posY * lda;
    if (offset > -7) ao8 = a + posY * 2 + (posX + 7) * lda; else ao8 = a + (posX + 7) * 2 + posY * lda;

    i     = m;

	while (i > 0) {
      data01 = *(ao1 + 0);
      data02 = *(ao1 + 1);
      data03 = *(ao2 + 0);
      data04 = *(ao2 + 1);
      data05 = *(ao3 + 0);
      data06 = *(ao3 + 1);
      data07 = *(ao4 + 0);
      data08 = *(ao4 + 1);
      data09 = *(ao5 + 0);
      data10 = *(ao5 + 1);
      data11 = *(ao6 + 0);
      data12 = *(ao6 + 1);
      data13 = *(ao7 + 0);
      data14 = *(ao7 + 1);
      data15 = *(ao8 + 0);
      data16 = *(ao8 + 1);

	  if (offset >   0) ao1 += 2; else ao1 += lda;
      if (offset >  -1) ao2 += 2; else ao2 += lda;
      if (offset >  -2) ao3 += 2; else ao3 += lda;
      if (offset >  -3) ao4 += 2; else ao4 += lda;
      if (offset >  -4) ao5 += 2; else ao5 += lda;
      if (offset >  -5) ao6 += 2; else ao6 += lda;
      if (offset >  -6) ao7 += 2; else ao7 += lda;
      if (offset >  -7) ao8 += 2; else ao8 += lda;

	  if (offset > 0) {
	b[ 0] = data01;
	b[ 1] = -data02;
	b[ 2] = data03;
	b[ 3] = -data04;
	b[ 4] = data05;
	b[ 5] = -data06;
	b[ 6] = data07;
	b[ 7] = -data08;
	b[ 8] = data09;
	b[ 9] = -data10;
	b[10] = data11;
	b[11] = -data12;
	b[12] = data13;
	b[13] = -data14;
	b[14] = data15;
	b[15] = -data16;
      } else
	if (offset < -7) {
	  b[ 0] = data01;
	  b[ 1] = data02;
	  b[ 2] = data03;
	  b[ 3] = data04;
	  b[ 4] = data05;
	  b[ 5] = data06;
	  b[ 6] = data07;
	  b[ 7] = data08;
	  b[ 8] = data09;
	  b[ 9] = data10;
	  b[10] = data11;
	  b[11] = data12;
	  b[12] = data13;
	  b[13] = data14;
	  b[14] = data15;
	  b[15] = data16;
	} else {
	switch (offset) {
	  case  0 :
	    b[ 0] = data01;
	    b[ 1] = ZERO;
	    b[ 2] = data03;
	    b[ 3] = -data04;
	    b[ 4] = data05;
	    b[ 5] = -data06;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -1 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = ZERO;
	    b[ 4] = data05;
	    b[ 5] = -data06;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -2 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = ZERO;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -3 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = ZERO;
	    b[ 8] = data09;
	    b[ 9] = -data10;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -4 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = ZERO;
	    b[10] = data11;
	    b[11] = -data12;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -5 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = ZERO;
	    b[12] = data13;
	    b[13] = -data14;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -6 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = ZERO;
	    b[14] = data15;
	    b[15] = -data16;
	    break;
	case -7 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = data08;
	    b[ 8] = data09;
	    b[ 9] = data10;
	    b[10] = data11;
	    b[11] = data12;
	    b[12] = data13;
	    b[13] = data14;
	    b[14] = data15;
	    b[15] = ZERO;
	    break;
		}
	}

      b += 16;

      offset --;
      i --;
    }

    posX += 8;
  }

  if (n & 4) {
    offset = posX - posY;

    if (offset >  0) ao1 = a + posY * 2 + (posX + 0) * lda; else ao1 = a + (posX + 0) * 2 + posY * lda;
    if (offset > -1) ao2 = a + posY * 2 + (posX + 1) * lda; else ao2 = a + (posX + 1) * 2 + posY * lda;
    if (offset > -2) ao3 = a + posY * 2 + (posX + 2) * lda; else ao3 = a + (posX + 2) * 2 + posY * lda;
    if (offset > -3) ao4 = a + posY * 2 + (posX + 3) * lda; else ao4 = a + (posX + 3) * 2 + posY * lda;

    i     = m;

    while (i > 0) {
      data01 = *(ao1 + 0);
      data02 = *(ao1 + 1);
      data03 = *(ao2 + 0);
      data04 = *(ao2 + 1);
      data05 = *(ao3 + 0);
      data06 = *(ao3 + 1);
      data07 = *(ao4 + 0);
      data08 = *(ao4 + 1);

      if (offset >   0) ao1 += 2; else ao1 += lda;
      if (offset >  -1) ao2 += 2; else ao2 += lda;
      if (offset >  -2) ao3 += 2; else ao3 += lda;
      if (offset >  -3) ao4 += 2; else ao4 += lda;

      if (offset > 0) {
	b[ 0] = data01;
	b[ 1] = -data02;
	b[ 2] = data03;
	b[ 3] = -data04;
	b[ 4] = data05;
	b[ 5] = -data06;
	b[ 6] = data07;
	b[ 7] = -data08;
      } else
	if (offset < -3) {
	  b[ 0] = data01;
	  b[ 1] = data02;
	  b[ 2] = data03;
	  b[ 3] = data04;
	  b[ 4] = data05;
	  b[ 5] = data06;
	  b[ 6] = data07;
	  b[ 7] = data08;
	} else {
	  switch (offset) {
	  case  0 :
	    b[ 0] = data01;
	    b[ 1] = ZERO;
	    b[ 2] = data03;
	    b[ 3] = -data04;
	    b[ 4] = data05;
	    b[ 5] = -data06;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    break;
	  case -1 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = ZERO;
	    b[ 4] = data05;
	    b[ 5] = -data06;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    break;
	  case -2 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = ZERO;
	    b[ 6] = data07;
	    b[ 7] = -data08;
	    break;
	  case -3 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = data04;
	    b[ 4] = data05;
	    b[ 5] = data06;
	    b[ 6] = data07;
	    b[ 7] = ZERO;
	    break;
	  }
	}

      b += 8;

      offset --;
      i --;
    }

    posX += 4;
  }

  if (n & 2) {

    offset = posX - posY;

    if (offset >  0) ao1 = a + posY * 2 + (posX + 0) * lda; else ao1 = a + (posX + 0) * 2 + posY * lda;
    if (offset > -1) ao2 = a + posY * 2 + (posX + 1) * lda; else ao2 = a + (posX + 1) * 2 + posY * lda;

    i     = m;

    while (i > 0) {
      data01 = *(ao1 + 0);
      data02 = *(ao1 + 1);
      data03 = *(ao2 + 0);
      data04 = *(ao2 + 1);

      if (offset >   0) ao1 += 2; else ao1 += lda;
      if (offset >  -1) ao2 += 2; else ao2 += lda;

      if (offset > 0) {
	b[ 0] = data01;
	b[ 1] = -data02;
	b[ 2] = data03;
	b[ 3] = -data04;
      } else
	if (offset < -1) {
	  b[ 0] = data01;
	  b[ 1] = data02;
	  b[ 2] = data03;
	  b[ 3] = data04;
	} else {
	  switch (offset) {
	  case  0 :
	    b[ 0] = data01;
	    b[ 1] = ZERO;
	    b[ 2] = data03;
	    b[ 3] = -data04;
	    break;
	  case -1 :
	    b[ 0] = data01;
	    b[ 1] = data02;
	    b[ 2] = data03;
	    b[ 3] = ZERO;
	    break;
	  }
	}

      b += 4;

      offset --;
      i --;
    }

    posX += 2;
  }

  if (n & 1) {

    offset = posX - posY;

    if (offset >  0) ao1 = a + posY * 2 + (posX + 0) * lda; else ao1 = a + (posX + 0) * 2 + posY * lda;

    i     = m;

    while (i > 0) {
      data01 = *(ao1 + 0);
      data02 = *(ao1 + 1);

      if (offset >   0) ao1 += 2; else ao1 += lda;

      if (offset > 0) {
	b[ 0] = data01;
	b[ 1] = -data02;
      } else
	if (offset < 0) {
	  b[ 0] = data01;
	  b[ 1] = data02;
	} else {
	    b[ 0] = data01;
	    b[ 1] = ZERO;
	}

      b += 2;

      offset --;
      i --;
    }

  }

  return 0;
}