locale/isupper.3

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  36 .\"     @(#)isupper.3   8.1 (Berkeley) 6/4/93
  37 .\" $FreeBSD: src/lib/libc/locale/isupper.3,v 1.8.2.5 2001/12/14 18:33:54 ru Exp $
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  39 .Dd June 4, 1993
  40 .Dt ISUPPER 3
  41 .Os
  42 .Sh NAME
  43 .Nm isupper
  44 .Nd upper-case character test
  45 .Sh LIBRARY
  46 .Lb libc
  47 .Sh SYNOPSIS
  48 .In ctype.h
  49 .Ft int
  50 .Fn isupper "int c"
  51 .Sh DESCRIPTION
  52 The
  53 .Fn isupper
  54 function tests for any upper-case letter.
  55 For single C
  56 .Va char Ns s
  57 locales (see
  58 .Xr multibyte 3 )
  59 the value of the argument is
  60 representable as an
  61 .Li unsigned char
  62 or the value of
  63 .Dv EOF .
  64 In the ASCII character set, this includes the following characters
  65 (with their numeric values shown in octal):
  66 .Pp
  67 .Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
  68 .It "\&101\ ``A'' \t102\ ``B'' \t103\ ``C'' \t104\ ``D'' \t105\ ``E''"
  69 .It "\&106\ ``F'' \t107\ ``G'' \t110\ ``H'' \t111\ ``I'' \t112\ ``J''"
  70 .It "\&113\ ``K'' \t114\ ``L'' \t115\ ``M'' \t116\ ``N'' \t117\ ``O''"
  71 .It "\&120\ ``P'' \t121\ ``Q'' \t122\ ``R'' \t123\ ``S'' \t124\ ``T''"
  72 .It "\&125\ ``U'' \t126\ ``V'' \t127\ ``W'' \t130\ ``X'' \t131\ ``Y''"
  73 .It "\&132\ ``Z''"
  74 .El
  75 .Sh RETURN VALUES
  76 The
  77 .Fn isupper
  78 function returns zero if the character tests false and
  79 returns non-zero if the character tests true.
  80 .Sh SEE ALSO
  81 .Xr ctype 3 ,
  82 .Xr multibyte 3 ,
  83 .Xr toupper 3 ,
  84 .Xr ascii 7
  85 .Sh STANDARDS
  86 The
  87 .Fn isupper
  88 function conforms to
  89 .St -isoC .