Welcome to Adams/Solver Subroutines - Kxcad.net

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Adams/Solver
Input Arguments
iord An integer variable that defines the order of the derivative that POLY is
to return. The order is usually zero, but it can be one or two.
npar An integer variable that indicates the number of coefficients specified.
The primary purpose of npar is to provide POLY with the number of
values stored in the par array.
par A double-precision array of any number of coefficients (a0,...,an).
x A double-precision variable that specifies the independent variable.
x0 A double-precision variable that specifies a shift in the polynomial.
Output Arguments
errflg A logical (true or false) variable that POLY returns to the calling
subroutine. If POLY detects an error in the subroutine call statement, it
sets errflg to true before it returns errflg to the calling subroutine.
value A double-precision value the subroutine returns. If iord equals zero, value
is the function evaluated at x. If iord equals one, value is the first
derivative of F(x) with respect to the independent variable x. If iord
equals two, value is the second derivative of F(x) with respect to the
independent variable x. Value is:
Extended Definition
A POLY general subroutine evaluates a polynomial. The following equation defines POLY:
a
∑
j = 0
PUT_SPLINE
aj( x – x0) j
0
1
2
IORD: Value:
F( x)
∂ F( x)
--------------
∂ x
∂ F 2 ( x)
∂ x 2
----------------
PUT_SPLINE is used in conjunction with SPLINE_READ. SPLINE_READ reads in the data points for
a spline from a file. PUT_SPLINE is used to store this data within Adams/Solver.