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-rw-r--r--lib/libc/locale/iscntrl.313
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/libc/locale/iscntrl.3 b/lib/libc/locale/iscntrl.3
index a67e6a4..21b98a7 100644
--- a/lib/libc/locale/iscntrl.3
+++ b/lib/libc/locale/iscntrl.3
@@ -44,6 +44,8 @@
.In ctype.h
.Ft int
.Fn iscntrl "int c"
+.Ft int
+.Fn iscntrl_l "int c" "locale_t loc"
.Sh DESCRIPTION
The
.Fn iscntrl
@@ -65,6 +67,12 @@ In the ASCII character set, this includes the following characters
.It "\&031\ EM \t032\ SUB \t033\ ESC \t034\ FS \t035\ GS"
.It "\&036\ RS \t037\ US \t177\ DEL"
.El
+.Pp
+The
+.Fn iscntrl_l
+function takes an explicit locale argument, whereas the
+.Fn iscntrl
+function uses the current global or per-thread locale.
.Sh RETURN VALUES
The
.Fn iscntrl
@@ -83,9 +91,14 @@ function should be used instead.
.Sh SEE ALSO
.Xr ctype 3 ,
.Xr iswcntrl 3 ,
+.Xr xlocale 3 ,
.Xr ascii 7
.Sh STANDARDS
The
.Fn iscntrl
function conforms to
.St -isoC .
+The
+.Fn iscntrl_l
+function conforms to
+.St -p1003.1-2008 .
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