ILE C/C++ Compiler Reference
Instructs the compiler to treat all variables of type char as
either signed or unsigned.

DFTCHAR Syntax:
|--+----------------------------+-------------------------------|
| .-*UNSIGNED-. |
'-DFTCHAR(--+-*SIGNED---+--)-'
- *UNSIGNED
- Default setting. Treats all variables declared as type char as type unsigned char.
The _CHAR_UNSIGNED macro is defined.
- *SIGNED
- Treats all variables declared as type char as
type signed char, and defines the _CHAR_SIGNED
macro. This setting is ignored if the TGTRLS option specifies a target
release earlier than V5R1M0.
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