12 files changed, 120 insertions, 0 deletions

diff --git a/lib/libc/locale/isalnum.3 b/lib/libc/locale/isalnum.3
index 157bfcfd4f46..08a7e1b89736 100644
--- a/lib/libc/locale/isalnum.3
+++ b/lib/libc/locale/isalnum.3
@@ -56,6 +56,15 @@ function tests for any character for which
 or
 .Xr isdigit 3
 is true.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -83,6 +92,7 @@ returns non-zero if the character tests true.
 .Xr ctype 3 ,
 .Xr isalpha 3 ,
 .Xr isdigit 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/isalpha.3 b/lib/libc/locale/isalpha.3
index 3549bb33225b..0d0cd2d0b326 100644
--- a/lib/libc/locale/isalpha.3
+++ b/lib/libc/locale/isalpha.3
@@ -56,6 +56,15 @@ function tests for any character for which
 or
 .Xr islower 3
 is true.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -81,6 +90,7 @@ returns non-zero if the character tests true.
 .Xr ctype 3 ,
 .Xr islower 3 ,
 .Xr isupper 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/isblank.3 b/lib/libc/locale/isblank.3
index 9312db56aa1c..e40a48dffee9 100644
--- a/lib/libc/locale/isblank.3
+++ b/lib/libc/locale/isblank.3
@@ -48,6 +48,15 @@
 The
 .Fn isblank
 function tests for a space or tab character.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 .Sh RETURN VALUES
 The
 .Fn isblank
@@ -55,4 +64,5 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
diff --git a/lib/libc/locale/iscntrl.3 b/lib/libc/locale/iscntrl.3
index 66522e1a4ff9..cd7d17e95056 100644
--- a/lib/libc/locale/iscntrl.3
+++ b/lib/libc/locale/iscntrl.3
@@ -52,6 +52,15 @@
 The
 .Fn iscntrl
 function tests for any control character.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -71,6 +80,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/isdigit.3 b/lib/libc/locale/isdigit.3
index f91a35d716ab..03cb69b7004e 100644
--- a/lib/libc/locale/isdigit.3
+++ b/lib/libc/locale/isdigit.3
@@ -52,6 +52,15 @@
 The
 .Fn isdigit
 function tests for any decimal-digit character.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -66,6 +75,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/isgraph.3 b/lib/libc/locale/isgraph.3
index 3d3ded666161..b557a0f5af7f 100644
--- a/lib/libc/locale/isgraph.3
+++ b/lib/libc/locale/isgraph.3
@@ -52,6 +52,15 @@
 The
 .Fn isgraph
 function tests for any printing character except space.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -83,6 +92,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/islower.3 b/lib/libc/locale/islower.3
index a3d57d3bee31..a93a1e8a7abf 100644
--- a/lib/libc/locale/islower.3
+++ b/lib/libc/locale/islower.3
@@ -52,6 +52,15 @@
 The
 .Fn islower
 function tests for any lower-case letters.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -70,6 +79,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr tolower 3 ,
 .Xr ascii 7
 .Sh STANDARDS
diff --git a/lib/libc/locale/isprint.3 b/lib/libc/locale/isprint.3
index 877932c885d1..4505b42703cb 100644
--- a/lib/libc/locale/isprint.3
+++ b/lib/libc/locale/isprint.3
@@ -52,6 +52,15 @@
 The
 .Fn isprint
 function tests for any printing character including space (' ').
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -83,6 +92,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/ispunct.3 b/lib/libc/locale/ispunct.3
index f4537a2a2a5c..866a1305bfa9 100644
--- a/lib/libc/locale/ispunct.3
+++ b/lib/libc/locale/ispunct.3
@@ -55,6 +55,15 @@ function tests for any printing character except for space (' ') or a
 character for which
 .Xr isalnum 3
 is true.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -74,6 +83,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/isspace.3 b/lib/libc/locale/isspace.3
index f55dc305948b..6a1a73e964d1 100644
--- a/lib/libc/locale/isspace.3
+++ b/lib/libc/locale/isspace.3
@@ -52,6 +52,15 @@
 The
 .Fn isspace
 function tests for the standard white-space characters.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -66,6 +75,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The
diff --git a/lib/libc/locale/isupper.3 b/lib/libc/locale/isupper.3
index 472cb7843104..ad3f36b407ab 100644
--- a/lib/libc/locale/isupper.3
+++ b/lib/libc/locale/isupper.3
@@ -52,6 +52,15 @@
 The
 .Fn isupper
 function tests for any upper-case letter.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -70,6 +79,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr toupper 3 ,
 .Xr ascii 7
 .Sh STANDARDS
diff --git a/lib/libc/locale/isxdigit.3 b/lib/libc/locale/isxdigit.3
index 8901c2cb7523..a33b48cb398a 100644
--- a/lib/libc/locale/isxdigit.3
+++ b/lib/libc/locale/isxdigit.3
@@ -52,6 +52,15 @@
 The
 .Fn isxdigit
 function tests for any hexadecimal-digit character.
+For single C
+.Va char Ns s
+locales (see
+.Xr multibyte 3 )
+the value of the argument is
+representable as an
+.Li unsigned char
+or the value of
+.Dv EOF .
 In the ASCII character set, this includes the following characters
 (with their numeric values shown in octal):
 .Pp
@@ -69,6 +78,7 @@ function returns zero if the character tests false and
 returns non-zero if the character tests true.
 .Sh SEE ALSO
 .Xr ctype 3 ,
+.Xr multibyte 3 ,
 .Xr ascii 7
 .Sh STANDARDS
 The