The Standard Types Settings dialog box (Standard Types Settings Dialog Box) enables you to define the size you want to associate to each ANSI-C standard type. You can also use the -T: Flexible Type Management compiler option to configure ANSI-C standard type sizes.
The following rules apply when you modify the size associated with an ANSI-C standard type:
sizeof(char) <= sizeof(short) sizeof(short) <= sizeof(int) sizeof(int) <= sizeof(long) sizeof(long) <= sizeof(long long) sizeof(float) <= sizeof(double) sizeof(double)<= sizeof(long double)
Enumerations must be smaller than or equal to int.
The signed check box enables you to specify whether the char type must be considered as signed or unsigned for your application.
The Default button resets the size of the ANSI C standard types to their default values. The ANSI C standard type default values depend on the target processor.