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- /* matrix/minmax_source.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman, Brian Gough
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- BASE
- FUNCTION (gsl_matrix, max) (const TYPE (gsl_matrix) * m)
- {
- /* finds the largest element of a matrix */
-
- const size_t M = m->size1;
- const size_t N = m->size2;
- const size_t tda = m->tda;
-
- BASE max = m->data[0 * tda + 0];
- size_t i, j;
-
- for (i = 0; i < M; i++)
- {
- for (j = 0; j < N; j++)
- {
- BASE x = m->data[i * tda + j];
- if (x > max)
- max = x;
- }
- }
-
- return max;
- }
-
- BASE
- FUNCTION (gsl_matrix, min) (const TYPE (gsl_matrix) * m)
- {
- /* finds the smallest element of a matrix */
-
- const size_t M = m->size1;
- const size_t N = m->size2;
- const size_t tda = m->tda;
-
- BASE min = m->data[0 * tda + 0];
- size_t i, j;
-
- for (i = 0; i < M; i++)
- {
- for (j = 0; j < N; j++)
- {
- BASE x = m->data[i * tda + j];
- if (x < min)
- min = x;
- }
- }
-
- return min;
- }
-
-
- void
- FUNCTION (gsl_matrix, minmax) (const TYPE (gsl_matrix) * m,
- BASE * min_out,
- BASE * max_out)
- {
- /* finds the smallest and largest elements of a matrix */
-
- const size_t M = m->size1;
- const size_t N = m->size2;
- const size_t tda = m->tda;
-
- BASE max = m->data[0 * tda + 0];
- BASE min = m->data[0 * tda + 0];
-
- size_t i, j;
-
- for (i = 0; i < M; i++)
- {
- for (j = 0; j < N; j++)
- {
- BASE x = m->data[i * tda + j];
- if (x < min)
- {
- min = x;
- }
- if (x > max)
- {
- max = x;
- }
- }
- }
-
- *min_out = min;
- *max_out = max;
- }
-
- void
- FUNCTION (gsl_matrix, max_index) (const TYPE (gsl_matrix) * m, size_t * imax_out, size_t *jmax_out)
- {
- /* finds the largest element of a matrix */
-
- const size_t M = m->size1;
- const size_t N = m->size2;
- const size_t tda = m->tda;
-
- BASE max = m->data[0 * tda + 0];
- size_t imax = 0, jmax = 0;
- size_t i, j;
-
- for (i = 0; i < M; i++)
- {
- for (j = 0; j < N; j++)
- {
- BASE x = m->data[i * tda + j];
- if (x > max)
- {
- max = x;
- imax = i;
- jmax = j;
- }
- }
- }
-
- *imax_out = imax;
- *jmax_out = jmax;
- }
-
- void
- FUNCTION (gsl_matrix, min_index) (const TYPE (gsl_matrix) * m, size_t * imin_out, size_t *jmin_out)
- {
- /* finds the largest element of a matrix */
-
- const size_t M = m->size1;
- const size_t N = m->size2;
- const size_t tda = m->tda;
-
- BASE min = m->data[0 * tda + 0];
- size_t imin = 0, jmin = 0;
- size_t i, j;
-
- for (i = 0; i < M; i++)
- {
- for (j = 0; j < N; j++)
- {
- BASE x = m->data[i * tda + j];
- if (x < min)
- {
- min = x;
- imin = i;
- jmin = j;
- }
- }
- }
-
- *imin_out = imin;
- *jmin_out = jmin;
- }
-
- void
- FUNCTION (gsl_matrix, minmax_index) (const TYPE (gsl_matrix) * m,
- size_t * imin_out,
- size_t * jmin_out,
- size_t * imax_out,
- size_t * jmax_out)
- {
- /* finds the smallest and largest elements of a matrix */
-
- const size_t M = m->size1;
- const size_t N = m->size2;
- const size_t tda = m->tda;
-
- size_t imin = 0, jmin = 0, imax = 0, jmax = 0;
- BASE max = m->data[0 * tda + 0];
- BASE min = m->data[0 * tda + 0];
-
- size_t i, j;
-
- for (i = 0; i < M; i++)
- {
- for (j = 0; j < N; j++)
- {
- BASE x = m->data[i * tda + j];
- if (x < min)
- {
- min = x;
- imin = i;
- jmin = j;
- }
- if (x > max)
- {
- max = x;
- imax = i;
- jmax = j;
- }
- }
- }
-
- *imin_out = imin;
- *jmin_out = jmin;
- *imax_out = imax;
- *jmax_out = jmax;
- }
-