Here is a list of all related documentation pages:

Introduction
Comments on vectors and matrices
Comments on basis splines
Comments on chebyshev approximation
Comments on complex numbers
Comments on numerical derivatives
Comments on Hankel transforms
Comments on eigensystems
Comments on error handling
Comments on fast Fourier transforms
Comments on digital filtering
Comments on fitting of functions
Comments on histograms
Comments on IEEE support
Comments on numerical integration routines
Comments on interpolation routines
Comments on auxiliary I/O routines
Comments on linear algebra routines
Comments on elementary mathematical functions
Comments on minimization routines
Comments on miscellaneous support routines
Comments on monte carlo routines
Comments on moving window statistics
Comments on nonlinear least squares fitting
Comments on large linear least square systems
Comments on multidimensional minimization
Comments on multidimensional root finding
Comments on ntuples
Comments on ordinary differential equations
Comments on permutations, combinations and multisets
Comments on polynomials
Comments on random numbers
Comments on root finding
Comments on running statistics
Comments on simulated annealing
Comments on sorting
Comments on special functions
on sparse matrix linear algebra
Comments on sparse matrix routines
Comments on statistical functions
Comments on series acceleration
Comments on wavelet transforms