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Diffstat (limited to 'lib/libc/locale/islower.3')
-rw-r--r-- | lib/libc/locale/islower.3 | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/libc/locale/islower.3 b/lib/libc/locale/islower.3 new file mode 100644 index 0000000..d72e7cf --- /dev/null +++ b/lib/libc/locale/islower.3 @@ -0,0 +1,91 @@ +.\" Copyright (c) 1991, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the American National Standards Committee X3, on Information +.\" Processing Systems. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)islower.3 8.1 (Berkeley) 6/4/93 +.\" $FreeBSD$ +.\" +.Dd July 17, 2005 +.Dt ISLOWER 3 +.Os +.Sh NAME +.Nm islower +.Nd lower-case character test +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In ctype.h +.Ft int +.Fn islower "int c" +.Sh DESCRIPTION +The +.Fn islower +function tests for any lower-case letters. +The value of the argument must be representable as an +.Vt "unsigned char" +or the value of +.Dv EOF . +.Pp +In the ASCII character set, this includes the following characters +(with their numeric values shown in octal): +.Pp +.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ +.It "\&141\ ``a'' \t142\ ``b'' \t143\ ``c'' \t144\ ``d'' \t145\ ``e''" +.It "\&146\ ``f'' \t147\ ``g'' \t150\ ``h'' \t151\ ``i'' \t152\ ``j''" +.It "\&153\ ``k'' \t154\ ``l'' \t155\ ``m'' \t156\ ``n'' \t157\ ``o''" +.It "\&160\ ``p'' \t161\ ``q'' \t162\ ``r'' \t163\ ``s'' \t164\ ``t''" +.It "\&165\ ``u'' \t166\ ``v'' \t167\ ``w'' \t170\ ``x'' \t171\ ``y''" +.It "\&172\ ``z''" +.El +.Sh RETURN VALUES +The +.Fn islower +function returns zero if the character tests false and +returns non-zero if the character tests true. +.Sh COMPATIBILITY +The +.Bx 4.4 +extension of accepting arguments outside of the range of the +.Vt "unsigned char" +type in locales with large character sets is considered obsolete +and may not be supported in future releases. +The +.Fn iswlower +function should be used instead. +.Sh SEE ALSO +.Xr ctype 3 , +.Xr iswlower 3 , +.Xr tolower 3 , +.Xr ascii 7 +.Sh STANDARDS +The +.Fn islower +function conforms to +.St -isoC . |