Zilog EZ80F916 - Manual (Page 340)

UM014423-0607 C Standard Library
ZiLOG Developer Studio II
eZ80Acclaim! ® User Manual
320
Errors
The < errno.h > header defines macros relating to the reporting of error conditions.
Macros
Additional macro definitions, beginning with E and an uppercase letter, can also be speci-
fied by the implementation.
Standard Definitions
The following types and macros are defined in several headers referred to in the descrip-
tions of the functions declared in that header, as well as the common <
stddef.h > stan-
dard header.
Macros
Types
Diagnostics
The < assert.h > header defines the
assert()
macro. It refers to the NDEBUG macro,
which is not defined in the header. If NDEBUG is defined as a macro name before the
inclusion of this header, the
assert()
macro is defined simply as:
#define assert(ignore)((void) 0)
EDOM Expands to a distinct nonzero integral constant expression.
ERANGE Expands to a distinct nonzero integral constant expression.
errno A modifiable value that has type int. Several libraries set errno to a positive value to
indicate an error. errno is initialized to zero at program startup, but it is never set to
zero by any library function. The value of errno can be set to nonzero by a library
function even if there is no error, depending on the behavior specified for the library
function in the ANSI Standard.
NULL Expands to a null pointer constant.
offsetof (type, identifier) Expands to an integral constant expression that has type size_t and
provides the offset in bytes, from the beginning of a structure
designated by type to the member designated by identifier.
ptrdiff_t Signed integral type of the result of subtracting two pointers.
size_t Unsigned integral type of the result of the sizeof operator.
wchar_t Integral type whose range of values can represent distinct codes for all members of
the largest extended character set specified among the supported locales.