plan9port

fork of plan9port with libvec, libstr and libsdb
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isalpharune.3 (1061B)

      1 .TH ISALPHARUNE 3
      2 .SH NAME
      3 isalpharune, islowerrune, isspacerune, istitlerune, isupperrune, tolowerrune, totitlerune, toupperrune \- Unicode character classes and cases
      4 .SH SYNOPSIS
      5 .B #include <u.h>
      6 .br
      7 .B #include <libc.h>
      8 .PP
      9 .B
     10 int isalpharune(Rune c)
     11 .PP
     12 .B
     13 int islowerrune(Rune c)
     14 .PP
     15 .B
     16 int isspacerune(Rune c)
     17 .PP
     18 .B
     19 int istitlerune(Rune c)
     20 .PP
     21 .B
     22 int isupperrune(Rune c)
     23 .PP
     24 .B
     25 Rune tolowerrune(Rune c)
     26 .PP
     27 .B
     28 Rune totitlerune(Rune c)
     29 .PP
     30 .B
     31 Rune toupperrune(Rune c)
     32 .SH DESCRIPTION
     33 These routines examine and operate on Unicode characters,
     34 in particular a subset of their properties as defined in the Unicode standard.
     35 Unicode defines some characters as alphabetic and specifies three cases:
     36 upper, lower, and title.
     37 Analogously to
     38 .MR isalpha (3)
     39 for
     40 .SM ASCII\c
     41 ,
     42 these routines
     43 test types and modify cases for Unicode characters.
     44 The names are self-explanatory.
     45 .PP
     46 The case-conversion routines return the character unchanged if it has no case.
     47 .SH SOURCE
     48 .B \*9/src/lib9/utf/runetype.c
     49 .SH "SEE ALSO
     50 .IR isalpha (3) ,
     51 .IR "The Unicode Standard" .