Name: POLYN
Purpose: POLYN computes the value of an N-component polynomial
DPOLYN computes the partial derivatives of that polynomial
Files: polyn.dc2,polyn.shl
Author: Peter Roelfsema
Call:
PX=POLYN(X,PAR,NPAR)
Input parameters:
X -R -running coordinate.
PAR -R -array defined as follows: PAR(0:NPAR) that
contains the parameters for the polynomial:
PAR(n)-polynomial coefficient for X**n.
NPAR -I -degree of the polynomial.
Use:
POLYN gives the value of a multi-component polynomial.
Note that the polynomial is defined as the following
summation:
PX = 0 FOR N=0 TO NPAR ( PX = PX + PAR(N) * X**N )
POLYN does not check for floating overflows in X**N, you
will have to worry about that yourself.
Update History:
8- 7-85-PRR.-original document
16- 6-86-PRR.-converted for VAX8600.
10- 9-92-PRR.-converted to new GIPSY