ISALPHARUNE(2) ISALPHARUNE(2)
NAME
isalpharune, islowerrune, isspacerune, istitlerune,
isupperrune, isdigitrune, tolowerrune, totitlerune,
toupperrune - Unicode character classes and cases
SYNOPSIS
#include <u.h>
#include <libc.h>
int isalpharune(Rune c)
int islowerrune(Rune c)
int isspacerune(Rune c)
int istitlerune(Rune c)
int isupperrune(Rune c)
int isdigitrune(Rune c)
Rune tolowerrune(Rune c)
Rune totitlerune(Rune c)
Rune toupperrune(Rune c)
DESCRIPTION
These routines examine and operate on Unicode characters, in
particular a subset of their properties as defined in the
Unicode standard. Unicode defines some characters as alpha-
betic and specifies three cases: upper, lower, and title.
Analogously to ctype(2) for ASCII, these routines test types
and modify cases for Unicode characters. The names are
self-explanatory.
The case-conversion routines return the character unchanged
if it has no case.
SOURCE
/sys/src/libc/port/runetype.c
SEE ALSO
ctype(2), The Unicode Standard.
Page 1 Plan 9 (printed 11/18/24)