ctype(3) - NetBSD Manual Pages

CTYPE(3)                  NetBSD Programmer's Manual                  CTYPE(3)


NAME
isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct, isprint, isgraph, iscntrl, isblank, isascii, toupper, tolower, toascii - character classification macros
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <ctype.h> int c isalpha(c); isupper(c); islower(c); isdigit(c); isxdigit(c); isalnum(c); isspace(c); ispunct(c); isprint(c); isgraph(c); iscntrl(c); isblank(c); isascii(c); toupper(c); tolower(c); toascii(c);
DESCRIPTION
The above macros perform character tests and conversions on the integer c. See the specific manual pages for more information.
SEE ALSO
isalpha(3), isupper(3), islower(3), isdigit(3), isxdigit(3), isalnum(3), isspace(3), ispunct(3), isprint(3), isgraph(3), iscntrl(3), isblank(3), isascii(3), toupper(3), tolower(3), toascii(3), ascii(7)
STANDARDS
These functions, with the exception of isblank() and toascii(), conform to ANSI X3.159-1989 (``ANSI C''). NetBSD 1.4 April 19, 1991 1

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