User`s guide

R2006a
22-14
Mathematics
New Library CHOLMOD for Sparse Cholesky Factorization
For sparse matrices, MATLAB now uses CHOLMOD version 1.0 to compute the Cholesky
factor. CHOLMOD is a set of routines offering improved performance in factorizing
sparse symmetric positive definite matrices. See the function reference pages for chol,
spparms, and mldivide for more information on how CHOLMOD is used by MATLAB.
New Solver for State-Dependent DDEs
In this release, MATLAB provides a second solver function, ddesd, in addition to the
existing dde23 function, for delay differential equations (DDEs). This new solver is for
use on equations that have general delays. You supply a function in the input argument
list that returns the vector of delays to be used by the solver. See the function reference
page for ddesd, and Delay Differential Equations in the MATLAB Mathematics
documentation for more information.
Upgrade to BLAS Libraries
MATLAB now uses new versions of the Basic Linear Algebra Subroutine (BLAS)
libraries. For Intel processors on Windows and Linux platforms, MATLAB supports
the Math Kernel Library (MKL) version 8.0.1. For AMD processors on Linux platforms,
MATLAB uses the AMD Core Math Library (ACML) version 2.7.
New Function for Integer Division
The new idivide function provides division similar to A./B on integers except that
fractional quotients are rounded to integers according to a specified rounding mode.
New Input to gallery Function
The gallery function has a new, optional input argument called classname. The
classname input is a quoted string that must be either 'single' or 'double'. When
you specify a classname argument in the call to gallery, MATLAB produces a matrix
of that class.