diff options
Diffstat (limited to 'manual/ctype.texi')
| -rw-r--r-- | manual/ctype.texi | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/manual/ctype.texi b/manual/ctype.texi index e7a7946466..2b97dfbf66 100644 --- a/manual/ctype.texi +++ b/manual/ctype.texi @@ -44,7 +44,7 @@ particular class of characters; each has a name starting with @samp{is}. Each of them takes one argument, which is a character to test, and returns an @code{int} which is treated as a boolean value. The character argument is passed as an @code{int}, and it may be the -constant value @code{EOF} instead of a real character. +constant value @code{EOF} instead of a real character. The attributes of any given character can vary between locales. @xref{Locales}, for more information on locales.@refill @@ -54,21 +54,21 @@ These functions are declared in the header file @file{ctype.h}. @cindex lower-case character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int islower (int @var{c}) Returns true if @var{c} is a lower-case letter. @end deftypefun @cindex upper-case character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isupper (int @var{c}) Returns true if @var{c} is an upper-case letter. @end deftypefun @cindex alphabetic character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isalpha (int @var{c}) Returns true if @var{c} is an alphabetic character (a letter). If @code{islower} or @code{isupper} is true of a character, then @@ -83,14 +83,14 @@ additional characters. @cindex digit character @cindex decimal digit character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isdigit (int @var{c}) Returns true if @var{c} is a decimal digit (@samp{0} through @samp{9}). @end deftypefun @cindex alphanumeric character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isalnum (int @var{c}) Returns true if @var{c} is an alphanumeric character (a letter or number); in other words, if either @code{isalpha} or @code{isdigit} is @@ -99,7 +99,7 @@ true of a character, then @code{isalnum} is also true. @cindex hexadecimal digit character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isxdigit (int @var{c}) Returns true if @var{c} is a hexadecimal digit. Hexadecimal digits include the normal decimal digits @samp{0} through @@ -109,7 +109,7 @@ Hexadecimal digits include the normal decimal digits @samp{0} through @cindex punctuation character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int ispunct (int @var{c}) Returns true if @var{c} is a punctuation character. This means any printing character that is not alphanumeric or a space @@ -118,7 +118,7 @@ character. @cindex whitespace character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isspace (int @var{c}) Returns true if @var{c} is a @dfn{whitespace} character. In the standard @code{"C"} locale, @code{isspace} returns true for only the standard @@ -155,7 +155,7 @@ This function is a GNU extension. @cindex graphic character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isgraph (int @var{c}) Returns true if @var{c} is a graphic character; that is, a character that has a glyph associated with it. The whitespace characters are not @@ -164,7 +164,7 @@ considered graphic. @cindex printing character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int isprint (int @var{c}) Returns true if @var{c} is a printing character. Printing characters include all the graphic characters, plus the space (@samp{ }) character. @@ -172,7 +172,7 @@ include all the graphic characters, plus the space (@samp{ }) character. @cindex control character @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int iscntrl (int @var{c}) Returns true if @var{c} is a control character (that is, a character that is not a printing character). @@ -203,7 +203,7 @@ character to convert, and return the converted character as an @code{int}. If the conversion is not applicable to the argument given, the argument is returned unchanged. -@strong{Compatibility Note:} In pre-ANSI C dialects, instead of +@strong{Compatibility Note:} In pre-@w{ISO C} dialects, instead of returning the argument unchanged, these functions may fail when the argument is not suitable for the conversion. Thus for portability, you may need to write @code{islower(c) ? toupper(c) : c} rather than just @@ -213,7 +213,7 @@ These functions are declared in the header file @file{ctype.h}. @pindex ctype.h @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int tolower (int @var{c}) If @var{c} is an upper-case letter, @code{tolower} returns the corresponding lower-case letter. If @var{c} is not an upper-case letter, @@ -221,7 +221,7 @@ lower-case letter. If @var{c} is not an upper-case letter, @end deftypefun @comment ctype.h -@comment ANSI +@comment ISO @deftypefun int toupper (int @var{c}) If @var{c} is a lower-case letter, @code{tolower} returns the corresponding upper-case letter. Otherwise @var{c} is returned unchanged. |