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/* vector/minmax_source.c
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*
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* Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Gerard Jungman, Brian Gough
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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BASE
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FUNCTION(gsl_vector,max) (const TYPE(gsl_vector) * v)
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{
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/* finds the largest element of a vector */
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const size_t N = v->size ;
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const size_t stride = v->stride ;
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BASE max = v->data[0 * stride];
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size_t i;
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for (i = 0; i < N; i++)
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{
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BASE x = v->data[i*stride];
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if (x > max)
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max = x;
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#ifdef FP
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if (isnan (x))
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return x;
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#endif
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}
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return max;
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}
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BASE
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FUNCTION(gsl_vector,min) (const TYPE(gsl_vector) * v)
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{
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/* finds the smallest element of a vector */
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const size_t N = v->size ;
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const size_t stride = v->stride ;
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BASE min = v->data[0 * stride];
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size_t i;
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for (i = 0; i < N; i++)
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{
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BASE x = v->data[i*stride];
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if (x < min)
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min = x;
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#ifdef FP
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if (isnan (x))
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return x;
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#endif
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}
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return min;
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}
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void
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FUNCTION(gsl_vector,minmax) (const TYPE(gsl_vector) * v,
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BASE * min_out,
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BASE * max_out)
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{
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/* finds the smallest and largest elements of a vector */
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const size_t N = v->size ;
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const size_t stride = v->stride ;
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BASE max = v->data[0 * stride];
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BASE min = v->data[0 * stride];
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size_t i;
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for (i = 0; i < N; i++)
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{
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BASE x = v->data[i*stride];
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if (x < min)
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{
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min = x;
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}
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if (x > max)
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{
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max = x;
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}
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#ifdef FP
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if (isnan (x))
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{
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min = x;
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max = x;
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break;
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}
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#endif
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}
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*min_out = min;
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*max_out = max;
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}
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size_t
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FUNCTION(gsl_vector,max_index) (const TYPE(gsl_vector) * v)
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{
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/* finds the largest element of a vector */
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const size_t N = v->size ;
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const size_t stride = v->stride ;
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BASE max = v->data[0 * stride];
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size_t imax = 0;
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size_t i;
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for (i = 0; i < N; i++)
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{
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BASE x = v->data[i*stride];
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if (x > max)
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{
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max = x;
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imax = i;
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}
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#ifdef FP
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if (isnan (x))
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{
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return i;
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}
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#endif
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}
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return imax;
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}
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size_t
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FUNCTION(gsl_vector,min_index) (const TYPE(gsl_vector) * v)
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{
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/* finds the smallest element of a vector */
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const size_t N = v->size ;
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const size_t stride = v->stride ;
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BASE min = v->data[0 * stride];
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size_t imin = 0;
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size_t i;
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for (i = 0; i < N; i++)
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{
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BASE x = v->data[i*stride];
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if (x < min)
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{
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min = x;
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imin = i;
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}
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#ifdef FP
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if (isnan (x))
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{
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return i;
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}
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#endif
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}
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return imin;
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}
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void
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FUNCTION(gsl_vector,minmax_index) (const TYPE(gsl_vector) * v,
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size_t * imin_out,
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size_t * imax_out)
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{
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/* finds the smallest and largest elements of a vector */
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const size_t N = v->size ;
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const size_t stride = v->stride ;
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size_t imin = 0, imax = 0;
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BASE max = v->data[0 * stride];
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BASE min = v->data[0 * stride];
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size_t i;
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for (i = 0; i < N; i++)
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{
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BASE x = v->data[i*stride];
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if (x < min)
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{
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min = x;
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imin = i;
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}
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if (x > max)
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{
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max = x;
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imax = i;
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}
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#ifdef FP
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if (isnan (x))
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{
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imin = i;
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imax = i;
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break;
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}
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#endif
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}
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*imin_out = imin;
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*imax_out = imax;
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}
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