https://github.com/cran/fields
Tip revision: 32c60b2ec8167f7d2b26f55147b4e380a8ad77b3 authored by Doug Nychka on 25 September 2011, 00:00:00 UTC
version 6.6.1
version 6.6.1
Tip revision: 32c60b2
evlpoly.f
subroutine evlpoly(x,n,coef,j,result)
c evaluates a polynomial: coef(1) + sum_i= 2,j coef(i)x**i
integer j,n, i
double precision x(n), result(n), coef(j)
double precision temp, tempx, temp2
do 10 i = 1,n
temp= coef(1)
tempx= x(i)
temp2= tempx
c temp is set to constant now loop over powers
do 20 kk= 2, j
temp= temp + coef(kk)* temp2
temp2= temp2*tempx
20 continue
result(i)= temp
10 continue
return
end