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

/* 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,    */

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/*    GOODS  OR  SERVICES; LOSS  OF  USE,  DATA,  OR PROFITS;  OR    */

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/*                                                                   */

/* 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, FLOAT *b){

  BLASLONG i, j;

  FLOAT *aoffset;

  FLOAT *aoffset1, *aoffset2;

  FLOAT *boffset;

  FLOAT ctemp01, ctemp02, ctemp03, ctemp04;

  FLOAT ctemp05, ctemp06, ctemp07, ctemp08;

  FLOAT ctemp09, ctemp10, ctemp11, ctemp12;

  FLOAT ctemp13, ctemp14, ctemp15, ctemp16;

  FLOAT ctemp17, ctemp18, ctemp19, ctemp20;

  FLOAT ctemp21, ctemp22, ctemp23, ctemp24;

  FLOAT ctemp25, ctemp26, ctemp27, ctemp28;

  FLOAT ctemp29, ctemp30, ctemp31, ctemp32;

  aoffset   = a;

  boffset   = b;

#if 0

  fprintf(stderr, "m = %d n = %d\n", m, n);

#endif

  j = (n >> 4);

  if (j > 0){

    do{

      aoffset1  = aoffset;

      aoffset2  = aoffset + lda;

      aoffset += 16;

      i = (m >> 1);

      if (i > 0){

	do{

	  ctemp01 = *(aoffset1 +  0);

	  ctemp02 = *(aoffset1 +  1);

	  ctemp03 = *(aoffset1 +  2);

	  ctemp04 = *(aoffset1 +  3);

	  ctemp05 = *(aoffset1 +  4);

	  ctemp06 = *(aoffset1 +  5);

	  ctemp07 = *(aoffset1 +  6);

	  ctemp08 = *(aoffset1 +  7);

	  ctemp09 = *(aoffset1 +  8);

	  ctemp10 = *(aoffset1 +  9);

	  ctemp11 = *(aoffset1 + 10);

	  ctemp12 = *(aoffset1 + 11);

	  ctemp13 = *(aoffset1 + 12);

	  ctemp14 = *(aoffset1 + 13);

	  ctemp15 = *(aoffset1 + 14);

	  ctemp16 = *(aoffset1 + 15);

	  ctemp17 = *(aoffset2 +  0);

	  ctemp18 = *(aoffset2 +  1);

	  ctemp19 = *(aoffset2 +  2);

	  ctemp20 = *(aoffset2 +  3);

	  ctemp21 = *(aoffset2 +  4);

	  ctemp22 = *(aoffset2 +  5);

	  ctemp23 = *(aoffset2 +  6);

	  ctemp24 = *(aoffset2 +  7);

	  ctemp25 = *(aoffset2 +  8);

	  ctemp26 = *(aoffset2 +  9);

	  ctemp27 = *(aoffset2 + 10);

	  ctemp28 = *(aoffset2 + 11);

	  ctemp29 = *(aoffset2 + 12);

	  ctemp30 = *(aoffset2 + 13);

	  ctemp31 = *(aoffset2 + 14);

	  ctemp32 = *(aoffset2 + 15);

	  *(boffset +  0) = -ctemp01;

	  *(boffset +  1) = -ctemp02;

	  *(boffset +  2) = -ctemp03;

	  *(boffset +  3) = -ctemp04;

	  *(boffset +  4) = -ctemp05;

	  *(boffset +  5) = -ctemp06;

	  *(boffset +  6) = -ctemp07;

	  *(boffset +  7) = -ctemp08;

	  *(boffset +  8) = -ctemp09;

	  *(boffset +  9) = -ctemp10;

	  *(boffset + 10) = -ctemp11;

	  *(boffset + 11) = -ctemp12;

	  *(boffset + 12) = -ctemp13;

	  *(boffset + 13) = -ctemp14;

	  *(boffset + 14) = -ctemp15;

	  *(boffset + 15) = -ctemp16;

	  *(boffset + 16) = -ctemp17;

	  *(boffset + 17) = -ctemp18;

	  *(boffset + 18) = -ctemp19;

	  *(boffset + 19) = -ctemp20;

	  *(boffset + 20) = -ctemp21;

	  *(boffset + 21) = -ctemp22;

	  *(boffset + 22) = -ctemp23;

	  *(boffset + 23) = -ctemp24;

	  *(boffset + 24) = -ctemp25;

	  *(boffset + 25) = -ctemp26;

	  *(boffset + 26) = -ctemp27;

	  *(boffset + 27) = -ctemp28;

	  *(boffset + 28) = -ctemp29;

	  *(boffset + 29) = -ctemp30;

	  *(boffset + 30) = -ctemp31;

	  *(boffset + 31) = -ctemp32;

	  aoffset1 +=  2 * lda;

	  aoffset2 +=  2 * lda;

	  boffset   += 32;

	  i --;

	}while(i > 0);

      }

      if (m & 1){

	ctemp01 = *(aoffset1 +  0);

	ctemp02 = *(aoffset1 +  1);

	ctemp03 = *(aoffset1 +  2);

	ctemp04 = *(aoffset1 +  3);

	ctemp05 = *(aoffset1 +  4);

	ctemp06 = *(aoffset1 +  5);

	ctemp07 = *(aoffset1 +  6);

	ctemp08 = *(aoffset1 +  7);

	ctemp09 = *(aoffset1 +  8);

	ctemp10 = *(aoffset1 +  9);

	ctemp11 = *(aoffset1 + 10);

	ctemp12 = *(aoffset1 + 11);

	ctemp13 = *(aoffset1 + 12);

	ctemp14 = *(aoffset1 + 13);

	ctemp15 = *(aoffset1 + 14);

	ctemp16 = *(aoffset1 + 15);

	*(boffset +  0) = -ctemp01;

	*(boffset +  1) = -ctemp02;

	*(boffset +  2) = -ctemp03;

	*(boffset +  3) = -ctemp04;

	*(boffset +  4) = -ctemp05;

	*(boffset +  5) = -ctemp06;

	*(boffset +  6) = -ctemp07;

	*(boffset +  7) = -ctemp08;

	*(boffset +  8) = -ctemp09;

	*(boffset +  9) = -ctemp10;

	*(boffset + 10) = -ctemp11;

	*(boffset + 11) = -ctemp12;

	*(boffset + 12) = -ctemp13;

	*(boffset + 13) = -ctemp14;

	*(boffset + 14) = -ctemp15;

	*(boffset + 15) = -ctemp16;

	boffset   += 16;

      }

      j--;

    }while(j > 0);

  } /* end of if(j > 0) */

  if (n & 8){

    aoffset1  = aoffset;

    aoffset2  = aoffset + lda;

    aoffset += 8;

    i = (m >> 1);

    if (i > 0){

      do{

	ctemp01 = *(aoffset1 +  0);

	ctemp02 = *(aoffset1 +  1);

	ctemp03 = *(aoffset1 +  2);

	ctemp04 = *(aoffset1 +  3);

	ctemp05 = *(aoffset1 +  4);

	ctemp06 = *(aoffset1 +  5);

	ctemp07 = *(aoffset1 +  6);

	ctemp08 = *(aoffset1 +  7);

	ctemp09 = *(aoffset2 +  0);

	ctemp10 = *(aoffset2 +  1);

	ctemp11 = *(aoffset2 +  2);

	ctemp12 = *(aoffset2 +  3);

	ctemp13 = *(aoffset2 +  4);

	ctemp14 = *(aoffset2 +  5);

	ctemp15 = *(aoffset2 +  6);

	ctemp16 = *(aoffset2 +  7);

	*(boffset +  0) = -ctemp01;

	*(boffset +  1) = -ctemp02;

	*(boffset +  2) = -ctemp03;

	*(boffset +  3) = -ctemp04;

	*(boffset +  4) = -ctemp05;

	*(boffset +  5) = -ctemp06;

	*(boffset +  6) = -ctemp07;

	*(boffset +  7) = -ctemp08;

	*(boffset +  8) = -ctemp09;

	*(boffset +  9) = -ctemp10;

	*(boffset + 10) = -ctemp11;

	*(boffset + 11) = -ctemp12;

	*(boffset + 12) = -ctemp13;

	*(boffset + 13) = -ctemp14;

	*(boffset + 14) = -ctemp15;

	*(boffset + 15) = -ctemp16;

	aoffset1 +=  2 * lda;

	aoffset2 +=  2 * lda;

	boffset   += 16;

	i --;

      }while(i > 0);

    }

    if (m & 1){

      ctemp01 = *(aoffset1 +  0);

      ctemp02 = *(aoffset1 +  1);

      ctemp03 = *(aoffset1 +  2);

      ctemp04 = *(aoffset1 +  3);

      ctemp05 = *(aoffset1 +  4);

      ctemp06 = *(aoffset1 +  5);

      ctemp07 = *(aoffset1 +  6);

      ctemp08 = *(aoffset1 +  7);

      *(boffset +  0) = -ctemp01;

      *(boffset +  1) = -ctemp02;

      *(boffset +  2) = -ctemp03;

      *(boffset +  3) = -ctemp04;

      *(boffset +  4) = -ctemp05;

      *(boffset +  5) = -ctemp06;

      *(boffset +  6) = -ctemp07;

      *(boffset +  7) = -ctemp08;

      boffset   += 8;

    }

  }

  if (n & 4){

    aoffset1  = aoffset;

    aoffset2  = aoffset + lda;

    aoffset += 4;

    i = (m >> 1);

    if (i > 0){

      do{

	ctemp01 = *(aoffset1 +  0);

	ctemp02 = *(aoffset1 +  1);

	ctemp03 = *(aoffset1 +  2);

	ctemp04 = *(aoffset1 +  3);

	ctemp05 = *(aoffset2 +  0);

	ctemp06 = *(aoffset2 +  1);

	ctemp07 = *(aoffset2 +  2);

	ctemp08 = *(aoffset2 +  3);

	*(boffset +  0) = -ctemp01;

	*(boffset +  1) = -ctemp02;

	*(boffset +  2) = -ctemp03;

	*(boffset +  3) = -ctemp04;

	*(boffset +  4) = -ctemp05;

	*(boffset +  5) = -ctemp06;

	*(boffset +  6) = -ctemp07;

	*(boffset +  7) = -ctemp08;

	aoffset1 +=  2 * lda;

	aoffset2 +=  2 * lda;

	boffset   += 8;

	i --;

      }while(i > 0);

    }

    if (m & 1){

      ctemp01 = *(aoffset1 +  0);

      ctemp02 = *(aoffset1 +  1);

      ctemp03 = *(aoffset1 +  2);

      ctemp04 = *(aoffset1 +  3);

      *(boffset +  0) = -ctemp01;

      *(boffset +  1) = -ctemp02;

      *(boffset +  2) = -ctemp03;

      *(boffset +  3) = -ctemp04;

      boffset   += 4;

    }

  }

  if (n & 2){

    aoffset1  = aoffset;

    aoffset2  = aoffset + lda;

    aoffset += 2;

    i = (m >> 1);

    if (i > 0){

      do{

	ctemp01 = *(aoffset1 +  0);

	ctemp02 = *(aoffset1 +  1);

	ctemp03 = *(aoffset2 +  0);

	ctemp04 = *(aoffset2 +  1);

	*(boffset +  0) = -ctemp01;

	*(boffset +  1) = -ctemp02;

	*(boffset +  2) = -ctemp03;

	*(boffset +  3) = -ctemp04;

	aoffset1 +=  2 * lda;

	aoffset2 +=  2 * lda;

	boffset   += 4;

	i --;

      }while(i > 0);

    }

    if (m & 1){

      ctemp01 = *(aoffset1 +  0);

      ctemp02 = *(aoffset1 +  1);

      *(boffset +  0) = -ctemp01;

      *(boffset +  1) = -ctemp02;

      boffset   += 2;

    }

  }

  if (n & 1){

    aoffset1  = aoffset;

    aoffset2  = aoffset + lda;

    i = (m >> 1);

    if (i > 0){

      do{

	ctemp01 = *(aoffset1 +  0);

	ctemp02 = *(aoffset2 +  0);

	*(boffset +  0) = -ctemp01;

	*(boffset +  1) = -ctemp02;

	aoffset1 +=  2 * lda;

	aoffset2 +=  2 * lda;

	boffset   += 2;

	i --;

      }while(i > 0);

    }

    if (m & 1){

      ctemp01 = *(aoffset1 +  0);

      *(boffset +  0) = -ctemp01;

      boffset   += 1;

    }

  }

  return 0;

}