NAME¶
ctype.h -
SYNOPSIS¶
Functions¶
Character classification routines
These functions perform character classification. They return true or false
status depending whether the character passed to the function falls into the
function's classification (i.e.
isdigit() returns true if its argument
is any value '0' though '9', inclusive). If the input is not an unsigned char
value, all of this function return false.
int
isalnum (int __c)
int
isalpha (int __c)
int
isascii (int __c)
int
isblank (int __c)
int
iscntrl (int __c)
int
isdigit (int __c)
int
isgraph (int __c)
int
islower (int __c)
int
isprint (int __c)
int
ispunct (int __c)
int
isspace (int __c)
int
isupper (int __c)
int
isxdigit (int __c)
Character convertion routines
This realization permits all possible values of integer argument. The
toascii() function clears all highest bits. The
tolower() and
toupper() functions return an input argument as is, if it is not an
unsigned char value.
int
toascii (int __c)
int
tolower (int __c)
int
toupper (int __c)
Author¶
Generated automatically by Doxygen for avr-libc from the source code.