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

/* 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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/*    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.                 */

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

#include <stdio.h></stdio.h>

#include "common.h"

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

  BLASLONG i, ii, j, jj;

  FLOAT data01, data02, data03, data04;

  FLOAT data05, data06, data07, data08;

  FLOAT data09, data10, data11, data12;

  FLOAT data13, data14, data15, data16;

  FLOAT data17, data18, data19, data20;

  FLOAT data21, data22, data23, data24;

  FLOAT data25, data26, data27, data28;

  FLOAT data29, data30, data31, data32;

  FLOAT *a1, *a2, *a3, *a4;

  lda *= 2;

  jj = offset;

  j = (n >> 2);

  while (j > 0){

    a1 = a + 0 * lda;

    a2 = a + 1 * lda;

    a3 = a + 2 * lda;

    a4 = a + 3 * lda;

    ii = 0;

    i = (m >> 2);

    while (i > 0) {

      if (ii == jj) {

#ifndef UNIT

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

#endif

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

#ifndef UNIT

	data11 = *(a2 + 2);

	data12 = *(a2 + 3);

#endif

	data17 = *(a3 + 0);

	data18 = *(a3 + 1);

	data19 = *(a3 + 2);

	data20 = *(a3 + 3);

#ifndef UNIT

	data21 = *(a3 + 4);

	data22 = *(a3 + 5);

#endif

	data25 = *(a4 + 0);

	data26 = *(a4 + 1);

	data27 = *(a4 + 2);

	data28 = *(a4 + 3);

	data29 = *(a4 + 4);

	data30 = *(a4 + 5);

#ifndef UNIT

	data31 = *(a4 + 6);

	data32 = *(a4 + 7);

#endif

	compinv(b +  0, data01, data02);

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data17;

	*(b +  5) = data18;

	*(b +  6) = data25;

	*(b +  7) = data26;

	compinv(b + 10, data11, data12);

	*(b + 12) = data19;

	*(b + 13) = data20;

	*(b + 14) = data27;

	*(b + 15) = data28;

	compinv(b + 20, data21, data22);

	*(b + 22) = data29;

	*(b + 23) = data30;

	compinv(b + 30, data31, data32);

      }

      if (ii < jj) {

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

	data03 = *(a1 + 2);

	data04 = *(a1 + 3);

	data05 = *(a1 + 4);

	data06 = *(a1 + 5);

	data07 = *(a1 + 6);

	data08 = *(a1 + 7);

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	data11 = *(a2 + 2);

	data12 = *(a2 + 3);

	data13 = *(a2 + 4);

	data14 = *(a2 + 5);

	data15 = *(a2 + 6);

	data16 = *(a2 + 7);

	data17 = *(a3 + 0);

	data18 = *(a3 + 1);

	data19 = *(a3 + 2);

	data20 = *(a3 + 3);

	data21 = *(a3 + 4);

	data22 = *(a3 + 5);

	data23 = *(a3 + 6);

	data24 = *(a3 + 7);

	data25 = *(a4 + 0);

	data26 = *(a4 + 1);

	data27 = *(a4 + 2);

	data28 = *(a4 + 3);

	data29 = *(a4 + 4);

	data30 = *(a4 + 5);

	data31 = *(a4 + 6);

	data32 = *(a4 + 7);

	*(b +  0) = data01;

	*(b +  1) = data02;

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data17;

	*(b +  5) = data18;

	*(b +  6) = data25;

	*(b +  7) = data26;

	*(b +  8) = data03;

	*(b +  9) = data04;

	*(b + 10) = data11;

	*(b + 11) = data12;

	*(b + 12) = data19;

	*(b + 13) = data20;

	*(b + 14) = data27;

	*(b + 15) = data28;

	*(b + 16) = data05;

	*(b + 17) = data06;

	*(b + 18) = data13;

	*(b + 19) = data14;

	*(b + 20) = data21;

	*(b + 21) = data22;

	*(b + 22) = data29;

	*(b + 23) = data30;

	*(b + 24) = data07;

	*(b + 25) = data08;

	*(b + 26) = data15;

	*(b + 27) = data16;

	*(b + 28) = data23;

	*(b + 29) = data24;

	*(b + 30) = data31;

	*(b + 31) = data32;

      }

      a1 += 8;

      a2 += 8;

      a3 += 8;

      a4 += 8;

      b += 32;

      i  --;

      ii += 4;

    }

    if (m & 2) {

      if (ii == jj) {

#ifndef UNIT

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

#endif

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

#ifndef UNIT

	data11 = *(a2 + 2);

	data12 = *(a2 + 3);

#endif

	data17 = *(a3 + 0);

	data18 = *(a3 + 1);

	data19 = *(a3 + 2);

	data20 = *(a3 + 3);

	data25 = *(a4 + 0);

	data26 = *(a4 + 1);

	data27 = *(a4 + 2);

	data28 = *(a4 + 3);

	compinv(b +  0, data01, data02);

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data17;

	*(b +  5) = data18;

	*(b +  6) = data25;

	*(b +  7) = data26;

	compinv(b + 10, data11, data12);

	*(b + 12) = data19;

	*(b + 13) = data20;

	*(b + 14) = data27;

	*(b + 15) = data28;

      }

      if (ii < jj) {

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

	data03 = *(a1 + 2);

	data04 = *(a1 + 3);

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	data11 = *(a2 + 2);

	data12 = *(a2 + 3);

	data17 = *(a3 + 0);

	data18 = *(a3 + 1);

	data19 = *(a3 + 2);

	data20 = *(a3 + 3);

	data25 = *(a4 + 0);

	data26 = *(a4 + 1);

	data27 = *(a4 + 2);

	data28 = *(a4 + 3);

	*(b +  0) = data01;

	*(b +  1) = data02;

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data17;

	*(b +  5) = data18;

	*(b +  6) = data25;

	*(b +  7) = data26;

	*(b +  8) = data03;

	*(b +  9) = data04;

	*(b + 10) = data11;

	*(b + 11) = data12;

	*(b + 12) = data19;

	*(b + 13) = data20;

	*(b + 14) = data27;

	*(b + 15) = data28;

      }

      a1 += 4;

      a2 += 4;

      a3 += 4;

      a4 += 4;

      b += 16;

      ii += 2;

    }

    if (m & 1) {

      if (ii == jj) {

#ifndef UNIT

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

#endif

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	data17 = *(a3 + 0);

	data18 = *(a3 + 1);

	data25 = *(a4 + 0);

	data26 = *(a4 + 1);

	compinv(b +  0, data01, data02);

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data17;

	*(b +  5) = data18;

	*(b +  6) = data25;

	*(b +  7) = data26;

      }

      if (ii < jj) {

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	data17 = *(a3 + 0);

	data18 = *(a3 + 1);

	data25 = *(a4 + 0);

	data26 = *(a4 + 1);

	*(b +  0) = data01;

	*(b +  1) = data02;

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data17;

	*(b +  5) = data18;

	*(b +  6) = data25;

	*(b +  7) = data26;

      }

      a1 += 2;

      a2 += 2;

      a3 += 2;

      a4 += 2;

      b +=  8;

      ii += 1;

    }

    a += 4 * lda;

    jj += 4;

    j  --;

  }

  if (n & 2) {

    a1 = a + 0 * lda;

    a2 = a + 1 * lda;

    ii = 0;

    i = (m >> 1);

    while (i > 0) {

      if (ii == jj) {

#ifndef UNIT

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

#endif

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

#ifndef UNIT

	data11 = *(a2 + 2);

	data12 = *(a2 + 3);

#endif

	compinv(b +  0, data01, data02);

	*(b +  2) = data09;

	*(b +  3) = data10;

	compinv(b + 6, data11, data12);

      }

      if (ii < jj) {

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

	data03 = *(a1 + 2);

	data04 = *(a1 + 3);

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	data11 = *(a2 + 2);

	data12 = *(a2 + 3);

	*(b +  0) = data01;

	*(b +  1) = data02;

	*(b +  2) = data09;

	*(b +  3) = data10;

	*(b +  4) = data03;

	*(b +  5) = data04;

	*(b +  6) = data11;

	*(b +  7) = data12;

      }

      a1 += 4;

      a2 += 4;

      b +=  8;

      i  --;

      ii += 2;

    }

    if (m & 1) {

      if (ii == jj) {

#ifndef UNIT

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

#endif

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	compinv(b +  0, data01, data02);

	*(b +  2) = data09;

	*(b +  3) = data10;

      }

      if (ii < jj) {

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

	data09 = *(a2 + 0);

	data10 = *(a2 + 1);

	*(b +  0) = data01;

	*(b +  1) = data02;

	*(b +  2) = data09;

	*(b +  3) = data10;

      }

      a1 += 2;

      a2 += 2;

      b +=  4;

      ii += 1;

    }

    a += 2 *lda;

    jj += 2;

  }

  if (n & 1) {

    a1 = a + 0 * lda;

    ii = 0;

    i = m;

    while (i > 0) {

      if (ii == jj) {

#ifndef UNIT

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

#endif

	compinv(b +  0, data01, data02);

      }

      if (ii < jj) {

	data01 = *(a1 + 0);

	data02 = *(a1 + 1);

	*(b +  0) = data01;

	*(b +  1) = data02;

      }

      a1 += 2;

      b += 2;

      i  --;

      ii += 1;

    }

    a += lda;

    jj += 1;

  }

  return 0;

}