pst-func is a package built for use with PSTricks. It provides macros for plotting various mathematical functions. Polynomials and their derivatives $f(x)=an*x^n+an-1*x^(n-1)+...+a0$ defined by the coefficients a0 a1 a2 ... and the derivative order; the Fourier sum f(x) = a0/2+a1cos(omega x)+...+b1sin(omega x)+... defined by the coefficients a0 a1 a2 ... b1 b2 b3 ...; the Bessel function defined by its order; and the Gauss function defined by sigma The author is Herbert Voss.