User`s guide

Target Settings

DSP56800E-Specific Target Settings Panels

Targeting MC56F83xx/DSP5685x Controllers

C/C++ Preprocessor

The C/C++ Preprocessor (Figure 4.5) panel controls how the preprocessor interprets

source code. By modifying the settings on this panel, you can control how the

preprocessor translates source code into preprocessed code.

More specifically, the C/C++ Preprocessor panel provides an editable text field that

can be used to #define macros, set #pragmas, or #include prefix files.

Enums Always

Int checkbox

Checked — Restricts all enumerators to the

size of a singed int.

Clear — Compiler converts unsigned int

enumerators to signed int, then chooses an

accommodating data type, char to long int.

To check whether this restriction is in

effect, use the

__option(enumalwasysint) command.

Use Unsigned

Chars checkbox

Checked — Compiler treats a char

declaration as an unsigned chard

declaration.

Clear — Compiler treats char and unsigned

char declarations differently.

Some libraries were compiled without

this option. Selecting this option may

make your code incompatible with

such libraries.

To check whether this option is in

effect, use the

__option(unsigned_char) command.

Reuse Strings

checkbox

Checked — Compiler stores only one copy

of identical string literals, saving memory

space.

Clear — Compiler stores each string literal.

If you select this option, changing one

of the strings affects them all.

Table 4.5 C/C++ Language Panel Elements (continued)

Element Purpose Comments