23char citcossinc_C[] =
"$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Coef/FFTW3/citcossinc.C,v 1.3 2014/10/13 08:53:20 j_novak Exp $" ;
114fftw_plan back_fft(
int, Tbl*&) ;
115double* cheb_ini(
const int) ;
118void citcossinc(
const int* deg,
const int* dimc,
double* cf,
const int* dimf,
137 cout <<
"citcossinc: nt > n2f : nt = " << nt <<
" , n2f = "
143 cout <<
"citcossinc: nt > n2c : nt = " << nt <<
" , n2c = "
149 cout <<
"citcossinc: n1c > n1f : n1c = " << n1c <<
" , n1f = "
155 cout <<
"citcossinc: n3c > n3f : n3c = " << n3c <<
" , n3f = "
167 fftw_plan p = back_fft(nm1, pg) ;
171 double* sinp = cheb_ini(nt);
176 int n2n3f = n2f * n3f ;
177 int n2n3c = n2c * n3c ;
192 for (k=0; k<n3c; k++) {
194 int i0 = n2n3c * j + k ;
195 double* cf0 = cf + i0 ;
198 double* ff0 = ff + i0 ;
204 double c1 = cf0[n3c] ;
208 for ( i = 3; i < nt; i += 2 ) {
209 ff0[ n3f*i ] = cf0[ n3c*i ] - c1 ;
210 som += ff0[ n3f*i ] ;
214 double fmoins0 = nm1s2 * c1 + som ;
219 for ( i = 3; i < nt; i += 2 ) {
220 g.set(nm1-i/2) = 0.25 * ( ff0[ n3f*i ] - ff0[ n3f*(i-2) ] ) ;
232 for (i=1; i<nm1s2; i++ ) g.set(i) = 0.5 * cf0[ n3c*2*i ] ;
233 g.set(nm1s2) = cf0[ n3c*nm1 ] ;
244 for ( i = 1; i < nm1s2 ; i++ ) {
248 double fp = 0.5 * ( g(i) + g(isym) ) ;
249 double fm = 0.5 * ( g(i) - g(isym) ) / sinp[i] ;
250 ff0[ n3f*i ] = fp + fm ;
251 ff0[ n3f*isym ] = fp - fm ;
255 ff0[0] = g(0) + fmoins0 ;
256 ff0[ n3f*nm1 ] = g(0) - fmoins0 ;
257 ff0[ n3f*nm1s2 ] = g(nm1s2) ;
266 if ( (j != 1) && (j != n1f-1 ) ) {
270 for (k=0; k<n3c; k++) {
272 int i0 = n2n3c * j + k ;
273 double* cf0 = cf + i0 ;
276 double* ff0 = ff + i0 ;
281 double c1 = cf0[n3c] ;
285 for ( i = 3; i < nt; i += 2 ) {
286 ff0[ n3f*i ] = cf0[ n3c*i ] - c1 ;
287 som += ff0[ n3f*i ] ;
291 double fmoins0 = nm1s2 * c1 + som ;
296 for ( i = 3; i < nt; i += 2 ) {
297 g.set(nm1-i/2) = 0.25 * ( ff0[ n3f*i ] - ff0[ n3f*(i-2) ] ) ;
309 for (i=1; i<nm1s2; i++ ) g.set(i) = 0.5 * cf0[ n3c*2*i ] ;
310 g.set(nm1s2) = cf0[ n3c*nm1 ] ;
321 for ( i = 1; i < nm1s2 ; i++ ) {
325 double fp = 0.5 * ( g(i) + g(isym) ) ;
326 double fm = 0.5 * ( g(i) - g(isym) ) / sinp[i] ;
327 ff0[ n3f*i ] = fp + fm ;
328 ff0[ n3f*isym ] = fp - fm ;
332 ff0[0] = g(0) + fmoins0 ;
333 ff0[ n3f*nm1 ] = g(0) - fmoins0 ;
334 ff0[ n3f*nm1s2 ] = g(nm1s2) ;
362 for (k=0; k<n3c; k++) {
364 int i0 = n2n3c * j + k ;
365 double* cf0 = cf + i0 ;
368 double* ff0 = ff + i0 ;
373 for (i=2; i<nm1; i += 2 ) g.set(nm1-i/2) = -0.5 * cf0[ n3c*i ] ;
378 g.set(0) = .5 * cf0[n3c] ;
379 for ( i = 3; i < nt; i += 2 ) {
380 g.set(i/2) = .25 * ( cf0[ n3c*i ] - cf0[ n3c*(i-2) ] ) ;
382 g.set(nm1s2) = - .5 * cf0[ n3c*(nt-2) ] ;
393 for ( i = 1; i < nm1s2 ; i++ ) {
397 double fp = 0.5 * ( g(i) + g(isym) ) / sinp[i] ;
398 double fm = 0.5 * ( g(i) - g(isym) ) ;
399 ff0[ n3f*i ] = fp + fm ;
400 ff0[ n3f*isym ] = fp - fm ;
405 ff0[ n3f*nm1 ] = -2*g(0) ;
406 ff0[ n3f*nm1s2 ] = g(nm1s2) ;
419 for (k=0; k<n3c; k++) {
421 int i0 = n2n3c * j + k ;
422 double* cf0 = cf + i0 ;
425 double* ff0 = ff + i0 ;
430 for (i=2; i<nm1; i += 2 ) g.set(nm1-i/2) = -0.5 * cf0[ n3c*i ] ;
435 g.set(0) = .5 * cf0[n3c] ;
436 for ( i = 3; i < nt; i += 2 ) {
437 g.set(i/2) = .25 * ( cf0[ n3c*i ] - cf0[ n3c*(i-2) ] ) ;
439 g.set(nm1s2) = - .5 * cf0[ n3c*(nt-2) ] ;
450 for ( i = 1; i < nm1s2 ; i++ ) {
454 double fp = 0.5 * ( g(i) + g(isym) ) / sinp[i] ;
455 double fm = 0.5 * ( g(i) - g(isym) ) ;
456 ff0[ n3f*i ] = fp + fm ;
457 ff0[ n3f*isym ] = fp - fm ;
462 ff0[ n3f*nm1 ] = -2*g(0) ;
463 ff0[ n3f*nm1s2 ] = g(nm1s2) ;