R12 Release Notes

Upgrading from an Earlier Release

Recompile Your Programs

Existing C/C++ Math Library Version 2.0 hand-written source code is compatible with the Version 2.1 library, but you must recompile your code. Additionally, any M-files which were compiled with Version 2.0 of the MATLAB Compiler must be recompiled with Version 2.1 of the MATLAB Compiler before using them with the Version 2.1 library. If you do not recompile your program, it will produce a run-time error.

Changed Features

Empty Arrays

In Version 2.0 of the C++ Math Library, any empty array could be used as an indexed deletion operator. In Version 2.1, you must use the empty() function for indexed deletion.

mbuild Function Now Returns Accurate Error Status

The mbuild syntax

mbuild myprog.c

now throws an error when it encounters an error condition.

The mex syntax

stat = mbuild('myprog.c')

now returns a nonzero value to stat when it encounters an error condition.

In the past, on Microsoft Windows platforms, mbuild always either successfully exited or returned zero (indicating success), regardless of whether an error had actually occurred.

To ensure code from before Release 12 works properly in Release 12, either use try/catch logic to deal with error conditions, or use a form of mbuild that returns an error status instead of throwing an error. Specifically

try
  mbuild something.c
catch
  disp(`something failed');
end

or

status = mbuild(`something.c');
if status ~= 0
  disp(`something failed');
end

For More Information

For information about upgrading from a release earlier than 2.0.1, see Release 11 New Features.

MATLAB C/C++ Math Library 2.1 Release Notes

MATLAB Compiler 2.1 Release Notes