void NR::sort3(Vec_IO_DP &ra, Vec_IO_DP &rb, Vec_IO_DP &rc)
{
int j;
int n=ra.size();
Vec_INT iwksp(n);
Vec_DP wksp(n);
indexx(ra,iwksp);
for (j=0;j<n;j++) wksp[j]=ra[j];
for (j=0;j<n;j++) ra[j]=wksp[iwksp[j]];
for (j=0;j<n;j++) wksp[j]=rb[j];
for (j=0;j<n;j++) rb[j]=wksp[iwksp[j]];
for (j=0;j<n;j++) wksp[j]=rc[j];
for (j=0;j<n;j++) rc[j]=wksp[iwksp[j]];
}
void NR::pwt(Vec_IO_DP &a, const int n, const int isign)
{
DP ai,ai1;
int i,ii,j,jf,jr,k,n1,ni,nj,nh,nmod;
if (n < 4) return;
wavefilt &wfilt=*wfilt_p;
Vec_DP wksp(n);
nmod=wfilt.ncof*n;
n1=n-1;
nh=n >> 1;
for (j=0;j<n;j++) wksp[j]=0.0;
if (isign >= 0) {
for (ii=0,i=0;i<n;i+=2,ii++) {
ni=i+1+nmod+wfilt.ioff;
nj=i+1+nmod+wfilt.joff;
for (k=0;k<wfilt.ncof;k++) {
jf=n1 & (ni+k+1);
jr=n1 & (nj+k+1);
wksp[ii] += wfilt.cc[k]*a[jf];
wksp[ii+nh] += wfilt.cr[k]*a[jr];
}
}
} else {
for (ii=0,i=0;i<n;i+=2,ii++) {
ai=a[ii];
ai1=a[ii+nh];
ni=i+1+nmod+wfilt.ioff;
nj=i+1+nmod+wfilt.joff;
for (k=0;k<wfilt.ncof;k++) {
jf=n1 & (ni+k+1);
jr=n1 & (nj+k+1);
wksp[jf] += wfilt.cc[k]*ai;
wksp[jr] += wfilt.cr[k]*ai1;
}
}
}
for (j=0;j<n;j++) a[j]=wksp[j];
}
