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

/* Copyright 2009, 2010 The University of Texas at Austin.           */

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/* Redistribution and use in source and binary forms, with or        */

/* without modification, are permitted provided that the following   */

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/*      copyright notice, this list of conditions and the following  */

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/*   2. Redistributions in binary form must reproduce the above      */

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/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */

/*    AUSTIN  ``AS IS''  AND ANY  EXPRESS OR  IMPLIED WARRANTIES,    */

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

#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, k;

  FLOAT *a1, *a2,  *a3,  *a4,  *a5,  *a6,  *a7,  *a8;

  FLOAT data1, data2;

  lda *= 2;

  jj = offset;

  j = (n >> 3);

  while (j > 0){

    a1  = a +  0 * lda;

    a2  = a +  1 * lda;

    a3  = a +  2 * lda;

    a4  = a +  3 * lda;

    a5  = a +  4 * lda;

    a6  = a +  5 * lda;

    a7  = a +  6 * lda;

    a8  = a +  7 * lda;

    a += 8 * lda;

    ii = 0;

    for (i = 0; i < m; i++) {

      if ((ii >= jj ) && (ii - jj < 8)) {

	data1 = *(a1 + (ii - jj) * lda + 0);

	data2 = *(a1 + (ii - jj) * lda + 1);

	compinv(b +  (ii - jj) * 2, data1, data2);

	for (k = ii - jj + 1; k < 8; k ++) {

	  *(b +  k * 2 + 0) = *(a1 +  k * lda + 0);

	  *(b +  k * 2 + 1) = *(a1 +  k * lda + 1);

	}

      }

      if (ii - jj < 0) {

	*(b +  0) = *(a1  +  0);

	*(b +  1) = *(a1  +  1);

	*(b +  2) = *(a2  +  0);

	*(b +  3) = *(a2  +  1);

	*(b +  4) = *(a3  +  0);

	*(b +  5) = *(a3  +  1);

	*(b +  6) = *(a4  +  0);

	*(b +  7) = *(a4  +  1);

	*(b +  8) = *(a5  +  0);

	*(b +  9) = *(a5  +  1);

	*(b + 10) = *(a6  +  0);

	*(b + 11) = *(a6  +  1);

	*(b + 12) = *(a7  +  0);

	*(b + 13) = *(a7  +  1);

	*(b + 14) = *(a8  +  0);

	*(b + 15) = *(a8  +  1);

      }

      a1  += 2;

      a2  += 2;

      a3  += 2;

      a4  += 2;

      a5  += 2;

      a6  += 2;

      a7  += 2;

      a8  += 2;

      b  += 16;

      ii ++;

    }

    jj += 8;

    j --;

  }

  if (n & 4) {

    a1  = a +  0 * lda;

    a2  = a +  1 * lda;

    a3  = a +  2 * lda;

    a4  = a +  3 * lda;

    a += 4 * lda;

    ii = 0;

    for (i = 0; i < m; i++) {

      if ((ii >= jj ) && (ii - jj < 4)) {

	data1 = *(a1 + (ii - jj) * lda + 0);

	data2 = *(a1 + (ii - jj) * lda + 1);

	compinv(b +  (ii - jj) * 2, data1, data2);

	for (k = ii - jj + 1; k < 4; k ++) {

	  *(b +  k * 2 + 0) = *(a1 +  k * lda + 0);

	  *(b +  k * 2 + 1) = *(a1 +  k * lda + 1);

	}

      }

      if (ii - jj < 0) {

	*(b +  0) = *(a1  +  0);

	*(b +  1) = *(a1  +  1);

	*(b +  2) = *(a2  +  0);

	*(b +  3) = *(a2  +  1);

	*(b +  4) = *(a3  +  0);

	*(b +  5) = *(a3  +  1);

	*(b +  6) = *(a4  +  0);

	*(b +  7) = *(a4  +  1);

      }

      a1  += 2;

      a2  += 2;

      a3  += 2;

      a4  += 2;

      b  += 8;

      ii ++;

    }

    jj += 4;

  }

  if (n & 2) {

    a1  = a +  0 * lda;

    a2  = a +  1 * lda;

    a += 2 * lda;

    ii = 0;

    for (i = 0; i < m; i++) {

      if ((ii >= jj ) && (ii - jj < 2)) {

	data1 = *(a1 + (ii - jj) * lda + 0);

	data2 = *(a1 + (ii - jj) * lda + 1);

	compinv(b +  (ii - jj) * 2, data1, data2);

	for (k = ii - jj + 1; k < 2; k ++) {

	  *(b +  k * 2 + 0) = *(a1 +  k * lda + 0);

	  *(b +  k * 2 + 1) = *(a1 +  k * lda + 1);

	}

      }

      if (ii - jj < 0) {

	*(b +  0) = *(a1  +  0);

	*(b +  1) = *(a1  +  1);

	*(b +  2) = *(a2  +  0);

	*(b +  3) = *(a2  +  1);

      }

      a1  += 2;

      a2  += 2;

      b  += 4;

      ii ++;

    }

    jj += 2;

  }

  if (n & 1) {

    a1  = a +  0 * lda;

    ii = 0;

    for (i = 0; i < m; i++) {

      if ((ii >= jj ) && (ii - jj < 1)) {

	data1 = *(a1 + (ii - jj) * lda + 0);

	data2 = *(a1 + (ii - jj) * lda + 1);

	compinv(b +  (ii - jj) * 2, data1, data2);

	for (k = ii - jj + 1; k < 1; k ++) {

	  *(b +  k * 2 + 0) = *(a1 +  k * lda + 0);

	  *(b +  k * 2 + 1) = *(a1 +  k * lda + 1);

	}

      }

      if (ii - jj < 0) {

	*(b +  0) = *(a1  +  0);

	*(b +  1) = *(a1  +  1);

      }

      a1  += 2;

      b  += 2;

      ii ++;

    }

  }

  return 0;

}