WSJT-X/ps.f
Joe Taylor 2c17544f3f initial import
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/WSJT/trunk@1 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2005-12-22 16:40:53 +00:00

24 lines
448 B
Fortran

subroutine ps(dat,nfft,s)
parameter (NMAX=16384+2)
parameter (NHMAX=NMAX/2-1)
real dat(nfft)
real s(NHMAX)
real x(NMAX)
complex c(0:NHMAX)
equivalence (x,c)
nh=nfft/2
do i=1,nfft
x(i)=dat(i)/128.0 !### Why 128 ??
enddo
call xfft(x,nfft)
fac=1.0/nfft
do i=1,nh
s(i)=fac*(real(c(i))**2 + imag(c(i))**2)
enddo
return
end