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 Search Site Miscellaneous Server Agreement Year 2038 Credits   Math::GSL::Poly(3) User Contributed Perl Documentation Math::GSL::Poly(3)

# NAME

Math::GSL::Poly - Solve and evaluate polynomials

# SYNOPSIS

```    use Math::GSL::Poly qw/:all/;
my (\$a,\$b,\$c) = (1,6,9);
my (\$x0, \$x1) = (0,0);
my \$num_roots = gsl_poly_solve_quadratic( \$a, \$b, \$c, \\$x0, \\$x1);
print "\${a}*x**2 + \${b}*x + \$c contains \$num_roots roots which are \$x0 and \$x1. \n";
```

# DESCRIPTION

Here is a list of all the functions included in this module :
gsl_poly_eval(@values, \$length, \$x)
This function evaluates a polynomial with real coefficients for the real variable \$x. \$length is the number of elements inside @values. The function returns a complex number.
gsl_poly_complex_eval(@values, \$length, \$z)
This function evaluates a polynomial with real coefficients for the complex variable \$z. \$length is the number of elements inside @valuesi. The function returns a complex number.
gsl_complex_poly_complex_eval(@values, \$length, \$z)
This function evaluates a polynomial with real coefficients for the complex variable \$z. \$length is the number of elements inside @values. \$length is the number of elements inside @values. The function returns a complex number.
gsl_poly_dd_init
gsl_poly_dd_eval
gsl_poly_dd_taylor
gsl_poly_solve_quadratic( \$a, \$b, \$c, \\$x0, \\$x1)
Find the real roots of the quadratic equation \$a*x**2+\$b*x+\$c = 0, return the number of real root (either zero, one or two) and the real roots are returned by \$x0, \$x1 and \$x2 which are deferenced.
gsl_poly_solve_cubic(\$a, \$b, \$c, \\$x0, \\$x1, \\$x2)
find the real roots of the cubic equation x**3+\$a*x**2+\$b*x+\$c = 0, return the number of real root (either one or three) and the real roots are returned by \$x0, \$x1 and \$x2 which are deferenced.
gsl_poly_complex_solve_cubic
gsl_poly_complex_workspace_alloc(\$n)
This function allocates space for a gsl_poly_complex_workspace struct and a workspace suitable for solving a polynomial with \$n coefficients using the routine gsl_poly_complex_solve.
gsl_poly_complex_workspace_free(\$w)
This function frees all the memory associated with the workspace \$w.
gsl_poly_complex_solve()
For more informations on the functions, we refer you to the GSL offcial documentation: <http://www.gnu.org/software/gsl/manual/html_node/>

# AUTHORS

Jonathan "Duke" Leto <jonathan@leto.net> and Thierry Moisan <thierry.moisan@gmail.com> Visit the GSP FreeBSD Man Page Interface.