23char cfrchebpimp_C[] =
"$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Coef/FFT991/cfrchebpimp.C,v 1.4 2014/10/15 12:48:20 j_novak Exp $" ;
143#include "proto_f77.h"
147int* facto_ini(
int ) ;
148double* trigo_ini(
int ) ;
149double* cheb_ini(
const int) ;
150double* chebimp_ini(
const int ) ;
154void cfrchebpimp(
const int* deg,
const int* dimf,
double* ff,
const int* dimc,
174 cout <<
"cfrchebpimp: nr > n3f : nr = " << nr <<
" , n3f = "
180 cout <<
"cfrchebpimp: nr > n3c : nr = " << nr <<
" , n3c = "
186 cout <<
"cfrchebpimp: n1f > n1c : n1f = " << n1f <<
" , n1c = "
192 cout <<
"cfrchebpimp: n2f > n2c : n2f = " << n2f <<
" , n2c = "
203 int* facto = facto_ini(nm1) ;
204 double* trigo = trigo_ini(nm1) ;
207 double* sinp = cheb_ini(nr);
210 double* x = chebimp_ini(nr);
213 double* g = (
double*)( malloc( (nm1+2)*
sizeof(
double) ) );
214 double* t1 = (
double*)( malloc( (nm1+2)*
sizeof(double) ) ) ;
224 int n2n3f = n2f * n3f ;
225 int n2n3c = n2c * n3c ;
240 for (k=0; k<n2f; k++) {
242 int i0 = n2n3f * j + n3f * k ;
243 double* ff0 = ff + i0 ;
245 i0 = n2n3c * j + n3c * k ;
246 double* cf0 = cf + i0 ;
254 double fmoins0 = 0.5 * ( ff0[nm1] - ff0[0] );
258 for ( i = 1; i < nm1s2 ; i++ ) {
264 int ixsym = nm1 - isym ;
267 double fp = 0.5 * ( ff0[ix] + ff0[ixsym] ) ;
269 double fms = 0.5 * ( ff0[ix] - ff0[ixsym] ) * sinp[i] ;
274 g[0] = 0.5 * ( ff0[nm1] + ff0[0] );
275 g[nm1s2] = ff0[nm1s2];
280 F77_fft991( g, t1, trigo, facto, &inc, &jump, &nm1, &lot, &isign) ;
289 for (i=2; i<nm1; i += 2 ) cf0[i] = 2. * g[i] ;
300 for ( i = 3; i < nr; i += 2 ) {
301 cf0[i] = cf0[i-2] + 4. * g[i] ;
306 double c1 = ( fmoins0 - som ) / nm1s2 ;
310 for ( i = 3; i < nr; i += 2 ) cf0[i] += c1 ;
320 if ( (j != 1) && (j != n1f-1) ) {
324 for (k=0; k<n2f; k++) {
326 int i0 = n2n3f * j + n3f * k ;
327 double* ff0 = ff + i0 ;
329 i0 = n2n3c * j + n3c * k ;
330 double* cf0 = cf + i0 ;
338 double fmoins0 = 0.5 * ( ff0[nm1] - ff0[0] );
342 for ( i = 1; i < nm1s2 ; i++ ) {
348 int ixsym = nm1 - isym ;
351 double fp = 0.5 * ( ff0[ix] + ff0[ixsym] ) ;
353 double fms = 0.5 * ( ff0[ix] - ff0[ixsym] ) * sinp[i] ;
358 g[0] = 0.5 * ( ff0[nm1] + ff0[0] );
359 g[nm1s2] = ff0[nm1s2];
364 F77_fft991( g, t1, trigo, facto, &inc, &jump, &nm1, &lot, &isign) ;
373 for (i=2; i<nm1; i += 2 ) cf0[i] = 2. * g[i] ;
384 for ( i = 3; i < nr; i += 2 ) {
385 cf0[i] = cf0[i-2] + 4. * g[i] ;
390 double c1 = ( fmoins0 - som ) / nm1s2 ;
394 for ( i = 3; i < nr; i += 2 ) cf0[i] += c1 ;
425 for (k=0; k<n2f; k++) {
427 int i0 = n2n3f * j + n3f * k ;
428 double* ff0 = ff + i0 ;
430 i0 = n2n3c * j + n3c * k ;
431 double* cf0 = cf + i0 ;
438 for (i=1; i<nr; i++) cf0[i] = x[i] * ff0[i] ;
446 double fmoins0 = 0.5 * ( cf0[nm1] - cf0[0] );
450 for ( i = 1; i < nm1s2 ; i++ ) {
456 int ixsym = nm1 - isym ;
459 double fp = 0.5 * ( cf0[ix] + cf0[ixsym] ) ;
461 double fms = 0.5 * ( cf0[ix] - cf0[ixsym] ) * sinp[i] ;
466 g[0] = 0.5 * ( cf0[nm1] + cf0[0] );
467 g[nm1s2] = cf0[nm1s2];
472 F77_fft991( g, t1, trigo, facto, &inc, &jump, &nm1, &lot, &isign) ;
482 for (i=2; i<nm1; i += 2 ) cf0[i] = 2. * g[i] ;
493 for ( i = 3; i < nr; i += 2 ) {
494 cf0[i] = cf0[i-2] + 4. * g[i] ;
499 double c1 = ( fmoins0 - som ) / nm1s2 ;
503 for ( i = 3; i < nr; i += 2 ) cf0[i] += c1 ;
509 for (i=1; i<nm1; i++) {
510 cf0[i] = 2 * cf0[i] - cf0[i-1] ;
527 for (k=0; k<n2f; k++) {
529 int i0 = n2n3f * j + n3f * k ;
530 double* ff0 = ff + i0 ;
532 i0 = n2n3c * j + n3c * k ;
533 double* cf0 = cf + i0 ;
540 for (i=1; i<nr; i++) cf0[i] = x[i] * ff0[i] ;
548 double fmoins0 = 0.5 * ( cf0[nm1] - cf0[0] );
552 for ( i = 1; i < nm1s2 ; i++ ) {
558 int ixsym = nm1 - isym ;
561 double fp = 0.5 * ( cf0[ix] + cf0[ixsym] ) ;
563 double fms = 0.5 * ( cf0[ix] - cf0[ixsym] ) * sinp[i] ;
568 g[0] = 0.5 * ( cf0[nm1] + cf0[0] );
569 g[nm1s2] = cf0[nm1s2];
574 F77_fft991( g, t1, trigo, facto, &inc, &jump, &nm1, &lot, &isign) ;
584 for (i=2; i<nm1; i += 2 ) cf0[i] = 2. * g[i] ;
595 for ( i = 3; i < nr; i += 2 ) {
596 cf0[i] = cf0[i-2] + 4. * g[i] ;
601 double c1 = ( fmoins0 - som ) / nm1s2 ;
605 for ( i = 3; i < nr; i += 2 ) cf0[i] += c1 ;
611 for (i=1; i<nm1; i++) {
612 cf0[i] = 2 * cf0[i] - cf0[i-1] ;