\(\newcommand{\W}[1]{ \; #1 \; }\) \(\newcommand{\R}[1]{ {\rm #1} }\) \(\newcommand{\B}[1]{ {\bf #1} }\) \(\newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} }\) \(\newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} }\) \(\newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} }\) \(\newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }\)
poly.cpp¶
View page sourcePolynomial Evaluation: Example and Test¶
# include <cppad/cppad.hpp>
# include <cmath>
bool poly(void)
{ bool ok = true;
// degree of the polynomial
size_t deg = 3;
// set the polynomial coefficients
CPPAD_TESTVECTOR(double) a(deg + 1);
size_t i;
for(i = 0; i <= deg; i++)
a[i] = 1.;
// evaluate this polynomial
size_t k = 0;
double z = 2.;
double p = CppAD::Poly(k, a, z);
ok &= (p == 1. + z + z*z + z*z*z);
// evaluate derivative
k = 1;
p = CppAD::Poly(k, a, z);
ok &= (p == 1 + 2.*z + 3.*z*z);
return ok;
}