| /* vector/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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| */ |
| |
| BASE |
| FUNCTION(gsl_vector,max) (const TYPE(gsl_vector) * v) |
| { |
| /* finds the largest element of a vector */ |
| |
| const size_t N = v->size ; |
| const size_t stride = v->stride ; |
| |
| BASE max = v->data[0 * stride]; |
| size_t i; |
| |
| for (i = 0; i < N; i++) |
| { |
| BASE x = v->data[i*stride]; |
| if (x > max) |
| max = x; |
| #ifdef FP |
| if (isnan (x)) |
| return x; |
| #endif |
| } |
| |
| return max; |
| } |
| |
| BASE |
| FUNCTION(gsl_vector,min) (const TYPE(gsl_vector) * v) |
| { |
| /* finds the smallest element of a vector */ |
| |
| const size_t N = v->size ; |
| const size_t stride = v->stride ; |
| |
| BASE min = v->data[0 * stride]; |
| size_t i; |
| |
| for (i = 0; i < N; i++) |
| { |
| BASE x = v->data[i*stride]; |
| if (x < min) |
| min = x; |
| #ifdef FP |
| if (isnan (x)) |
| return x; |
| #endif |
| } |
| |
| return min; |
| } |
| |
| void |
| FUNCTION(gsl_vector,minmax) (const TYPE(gsl_vector) * v, |
| BASE * min_out, |
| BASE * max_out) |
| { |
| /* finds the smallest and largest elements of a vector */ |
| |
| const size_t N = v->size ; |
| const size_t stride = v->stride ; |
| |
| BASE max = v->data[0 * stride]; |
| BASE min = v->data[0 * stride]; |
| |
| size_t i; |
| |
| for (i = 0; i < N; i++) |
| { |
| BASE x = v->data[i*stride]; |
| if (x < min) |
| { |
| min = x; |
| } |
| if (x > max) |
| { |
| max = x; |
| } |
| #ifdef FP |
| if (isnan (x)) |
| { |
| min = x; |
| max = x; |
| break; |
| } |
| #endif |
| } |
| |
| *min_out = min; |
| *max_out = max; |
| } |
| |
| |
| size_t |
| FUNCTION(gsl_vector,max_index) (const TYPE(gsl_vector) * v) |
| { |
| /* finds the largest element of a vector */ |
| |
| const size_t N = v->size ; |
| const size_t stride = v->stride ; |
| |
| BASE max = v->data[0 * stride]; |
| size_t imax = 0; |
| size_t i; |
| |
| for (i = 0; i < N; i++) |
| { |
| BASE x = v->data[i*stride]; |
| if (x > max) |
| { |
| max = x; |
| imax = i; |
| } |
| #ifdef FP |
| if (isnan (x)) |
| { |
| return i; |
| } |
| #endif |
| } |
| |
| return imax; |
| } |
| |
| size_t |
| FUNCTION(gsl_vector,min_index) (const TYPE(gsl_vector) * v) |
| { |
| /* finds the smallest element of a vector */ |
| |
| const size_t N = v->size ; |
| const size_t stride = v->stride ; |
| |
| BASE min = v->data[0 * stride]; |
| size_t imin = 0; |
| size_t i; |
| |
| for (i = 0; i < N; i++) |
| { |
| BASE x = v->data[i*stride]; |
| if (x < min) |
| { |
| min = x; |
| imin = i; |
| } |
| #ifdef FP |
| if (isnan (x)) |
| { |
| return i; |
| } |
| #endif |
| } |
| |
| return imin; |
| } |
| |
| |
| void |
| FUNCTION(gsl_vector,minmax_index) (const TYPE(gsl_vector) * v, |
| size_t * imin_out, |
| size_t * imax_out) |
| { |
| /* finds the smallest and largest elements of a vector */ |
| |
| const size_t N = v->size ; |
| const size_t stride = v->stride ; |
| |
| size_t imin = 0, imax = 0; |
| BASE max = v->data[0 * stride]; |
| BASE min = v->data[0 * stride]; |
| |
| size_t i; |
| |
| for (i = 0; i < N; i++) |
| { |
| BASE x = v->data[i*stride]; |
| if (x < min) |
| { |
| min = x; |
| imin = i; |
| } |
| if (x > max) |
| { |
| max = x; |
| imax = i; |
| } |
| #ifdef FP |
| if (isnan (x)) |
| { |
| imin = i; |
| imax = i; |
| break; |
| } |
| #endif |
| } |
| |
| *imin_out = imin; |
| *imax_out = imax; |
| } |
| |
| |