FNSetParameters

Sets the parameters that define the matematical function.

Synopsis

#include "slepcfn.h" 
PetscErrorCode FNSetParameters(FN fn,PetscInt na,PetscScalar *alpha,PetscInt nb,PetscScalar *beta)
Logically Collective on FN

Input Parameters

fn - the math function context
na - number of parameters in the first group
alpha - first group of parameters (array of scalar values)
nb - number of parameters in the second group
beta - second group of parameters (array of scalar values)

Notes

In a rational function r(x) = p(x)/q(x), where p(x) and q(x) are polynomials, the parameters alpha and beta represent the coefficients of p(x) and q(x), respectively. Hence, p(x) is of degree na-1 and q(x) of degree nb-1. If nb is zero, then the function is assumed to be polynomial, r(x) = p(x).

In other functions the parameters have other meanings.

In polynomials, high order coefficients are stored in the first positions of the array, e.g. to represent x^2-3 use {1,0,-3}.

See Also

FNGetParameters()

Location: src/fn/fnbasic.c
Index of all FN routines
Table of Contents for all manual pages
Index of all manual pages

Examples

src/nep/examples/tutorials/ex22.c.html