Laguerre polynomial, the generalized Laguerre polynomials, and the Laguerre function. Hermite polynomial, the probabilist’s Hermite polynomial, the Hermite function, and related functions. Lobatto polynomials, similar to Legendre polynomials except that they are zero at both endpoints. I4_MIN returns the minimum of two I4’s. IMTQLX diagonalizes a symmetric tridiagonal matrix. R8_ABS returns the absolute value of an R8.