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-rw-r--r--lib/libc/locale/isdigit.314
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/libc/locale/isdigit.3 b/lib/libc/locale/isdigit.3
index 5d34e0c..bb7dd72 100644
--- a/lib/libc/locale/isdigit.3
+++ b/lib/libc/locale/isdigit.3
@@ -36,7 +36,7 @@
.\" @(#)isdigit.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
-.Dd June 4, 1993
+.Dd October 6, 2002
.Dt ISDIGIT 3
.Os
.Sh NAME
@@ -76,8 +76,20 @@ The
.Fn isdigit
function returns zero if the character tests false and
returns non-zero if the character tests true.
+.Sh COMPATIBILITY
+Although
+.Fn isdigit
+accepts arguments outside of the range of the
+.Vt "unsigned char"
+type in locales with large character sets,
+this is a
+.Bx 4.4
+extension and the
+.Fn iswdigit
+function should be used instead for maximum portability.
.Sh SEE ALSO
.Xr ctype 3 ,
+.Xr iswdigit 3 ,
.Xr multibyte 3 ,
.Xr ascii 7
.Sh STANDARDS
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