Zilog ZUSBOPTS Manual de usuario descargar pdf (Pagina 198)

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Predefined Macros UM017105-0511

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Zilog Developer Studio II – ZNEO™

User Manual

All data are aligned on a byte boundary.

Alignment of 16- or 32-bit objects on even boundaries is a possible future en-

hancement. Avoid writing code that depends on how data are aligned.

Predefined Macros

The ZNEO C-Compiler comes with the following standard predefined macro names:

None of these macro names can be the subject of a

#define or a #undef preprocessing

directive. The values of these predefined macros (except for

__LINE__ and __FILE__)

remain constant throughout the translation unit.

The following additional macros are predefined by the ZNEO C-Compiler:

_Near pointer 16 bits

_Far pointer 32 bits

_Rom pointer 16 bits

_Erom pointer 32 bits

__DATE__ This macro expands to the current date in the format “Mmm dd yyyy” (a

character string literal), where the names of the months are the same

as those generated by the asctime function and the first character of

dd is a space character if the value is less than 10.

__FILE__ This macro expands to the current source file name (a string literal).

__LINE__ This macro expands to the current line number (a decimal constant).

__STDC__ This macro is defined as the decimal constant 1 and indicates confor-

mance with ANSI C.

__TIME__ This macro expands to the compilation time in the format “hh:mm:ss” (a

string literal).

Caution:

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