23char cfrchebi_C[] =
"$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Coef/FFT991/cfrchebi.C,v 1.4 2014/10/15 12:48:20 j_novak Exp $" ;
136#include "proto_f77.h"
140int* facto_ini(
int ) ;
141double* trigo_ini(
int ) ;
142double* cheb_ini(
const int) ;
143double* chebimp_ini(
const int ) ;
147void cfrchebi(
const int* deg,
const int* dimf,
double* ff,
const int* dimc,
167 cout <<
"cfrchebi: nr > n3f : nr = " << nr <<
" , n3f = "
173 cout <<
"cfrchebi: nr > n3c : nr = " << nr <<
" , n3c = "
179 cout <<
"cfrchebi: n1f > n1c : n1f = " << n1f <<
" , n1c = "
185 cout <<
"cfrchebi: n2f > n2c : n2f = " << n2f <<
" , n2c = "
196 int* facto = facto_ini(nm1) ;
197 double* trigo = trigo_ini(nm1) ;
200 double* sinp = cheb_ini(nr);
203 double* x = chebimp_ini(nr);
207 double* g = (
double*)( malloc( (nm1+2)*
sizeof(
double) ) );
208 double* t1 = (
double*)( malloc( (nm1+2)*
sizeof(double) ) ) ;
218 int n2n3f = n2f * n3f ;
219 int n2n3c = n2c * n3c ;
227 int borne_phi = ( n1f > 1 ) ? n1f-1 : 1 ;
229 for (j=0; j< borne_phi; j++) {
233 for (k=0; k<n2f; k++) {
235 int i0 = n2n3f * j + n3f * k ;
236 double* ff0 = ff + i0 ;
238 i0 = n2n3c * j + n3c * k ;
239 double* cf0 = cf + i0 ;
246 for (i=1; i<nr; i++) cf0[i] = x[i] * ff0[i] ;
254 double fmoins0 = 0.5 * ( cf0[nm1] - cf0[0] );
258 for ( i = 1; i < nm1s2 ; i++ ) {
264 int ixsym = nm1 - isym ;
267 double fp = 0.5 * ( cf0[ix] + cf0[ixsym] ) ;
269 double fms = 0.5 * ( cf0[ix] - cf0[ixsym] ) * sinp[i] ;
274 g[0] = 0.5 * ( cf0[nm1] + cf0[0] );
275 g[nm1s2] = cf0[nm1s2];
280 F77_fft991( g, t1, trigo, facto, &inc, &jump, &nm1, &lot, &isign) ;
290 for (i=2; i<nm1; i += 2 ) cf0[i] = 2. * g[i] ;
301 for ( i = 3; i < nr; i += 2 ) {
302 cf0[i] = cf0[i-2] + 4. * g[i] ;
307 double c1 = ( fmoins0 - som ) / nm1s2 ;
311 for ( i = 3; i < nr; i += 2 ) cf0[i] += c1 ;
317 for (i=1; i<nm1; i++) {
318 cf0[i] = 2 * cf0[i] - cf0[i-1] ;