mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-19 10:32:02 -05:00
24 lines
406 B
Fortran
24 lines
406 B
Fortran
real function fchisq0(y,npts,a)
|
|
|
|
real y(npts),a(4)
|
|
|
|
! rewind 51
|
|
chisq = 0.
|
|
do i=1,npts
|
|
x=i
|
|
z=(x-a(3))/(0.5*a(4))
|
|
yfit=a(1)
|
|
if(abs(z).lt.3.0) then
|
|
d=1.0 + z*z
|
|
yfit=a(1) + a(2) * (1.0/d - 0.1)
|
|
endif
|
|
chisq=chisq + (y(i) - yfit)**2
|
|
! write(51,3001) i,y(i),yfit,y(i)-yfit
|
|
!3001 format(i5,3f10.4)
|
|
enddo
|
|
fchisq0=chisq
|
|
|
|
return
|
|
end function fchisq0
|
|
|