Version 2.3 (R2008b) Fixed-Point Toolbox™ Software Release Notes

Version 2.3 (R2008b) Fixed-Point Toolbox Software

This table summarizes what's new in Version 2.3 (R2008b):

New features and changes introduced in this version are:

• The Default fimath Object is Now User-Configurable

• Embedded MATLAB Subset Support for Data up to 128 Bits

• round and convergent Rounding Mode Support Added to the Embedded MATLAB Subset

• New reinterpretcast Function

• New sort Function for Fixed-Point Inputs

The Default fimath Object is Now User-Configurable

When you create a fi object in MATLAB code or the Embedded MATLAB™ Function block without providing any fimath attributes in the constructor call, a default fimath object is assigned to the fi object you create. Previously, this default fimath object could not be user-configured, and the only way to assign a different fimath to your fi objects was to specify the desired fimath object in every constructor call.

In R2008b, the default fimath object used in the fi and fimath constructors can be user-configured. For more information, see Configuring the MATLAB Default fimath Object in the Fixed-Point Toolbox™ User's Guide.

Embedded MATLAB Subset Support for Data up to 128 Bits

The Embedded MATLAB subset now supports fixed-point word lengths up to 128 bits. This includes:

• Acceleration of fixed-point algorithm execution with the emlmex function.

• C code production with the emlc function.

• Model simulation and C code production with the Embedded MATLAB Function block.

round and convergent Rounding Mode Support Added to the Embedded MATLAB Subset

The Embedded MATLAB subset now supports two additional rounding modes:

• round — Round toward nearest integer with ties rounding to nearest integer with greater absolute value

• convergent — Round toward nearest integer with ties rounding to nearest even integer

New reinterpretcast Function

Fixed-Point Toolbox software now provides a reinterpretcast function to convert fixed-point data types without changing the underlying data.

New sort Function for Fixed-Point Inputs

Fixed-Point Toolbox software now provides support for the MATLAB sort function.

Fixed-Point Toolbox Release Notes

Version 2.2 (R2008a) Fixed-Point Toolbox Software