Zilog ZUSBOPTS Uživatelský manuál stáhnout pdf (Strana 423)

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101

UM017105-0511 Standard Header Files

Zilog Developer Studio II – ZNEO™

User Manual

395

Character Testing

Character Case Mapping

Limits <limits.h>

The <limits.h> header defines macros that expand to various limits and parameters.

Macros

int isalnum(int c); Tests for alphanumeric character.

int isalpha(int c); Tests for alphabetic character.

int iscntrl(int c); Tests for control character.

int isdigit(int c); Tests for decimal digit.

int isgraph(int c); Tests for printable character except space.

int islower(int c); Tests for lowercase character.

int isprint(int c); Tests for printable character.

int ispunct(int c); Tests for punctuation character.

int isspace(int c); Tests for white-space character.

int isupper(int c); Tests for uppercase character.

int isxdigit(int c); Tests for hexadecimal digit.

int tolower(int c); Tests character and converts to lowercase if upper-

case.

int toupper(int c); Tests character and converts to uppercase if lower-

case.

CHAR_BIT Maximum number of bits for smallest object that is not a bit-field (byte).

CHAR_MAX Maximum value for an object of type char.

CHAR_MIN Minimum value for an object of type char.

INT_MAX Maximum value for an object of type int.

INT_MIN Minimum value for an object of type int.

LONG_MAX Maximum value for an object of type long int.

LONG_MIN Minimum value for an object of type long int.

SCHAR_MAX Maximum value for an object of type signed char.

SCHAR_MIN Minimum value for an object of type signed char.

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