diff options
Diffstat (limited to 'sys/vops/apol.gx')
-rw-r--r-- | sys/vops/apol.gx | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sys/vops/apol.gx b/sys/vops/apol.gx new file mode 100644 index 00000000..04d162c5 --- /dev/null +++ b/sys/vops/apol.gx @@ -0,0 +1,25 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +# APOL -- Evaluate a polynomial at X, given the coefficients of the polynomial +# in COEFF and returning the computed value as the function value. + +PIXEL procedure apol$t (x, coeff, ncoeff) + +PIXEL x # point at which the polynomial is to be evaluated +PIXEL coeff[ncoeff] # coefficients of the polynomial, lower orders first +int ncoeff + +int i +PIXEL pow, sum + +begin + sum = coeff[1] + pow = x + + do i = 2, ncoeff { + sum = sum + pow * coeff[i] + pow = pow * x + } + + return (sum) +end |