1 files changed, 202 insertions, 0 deletions
diff --git a/lib/libc/locale/isctype.c b/lib/libc/locale/isctype.c
new file mode 100644
index 000000000000..c6bea890d154
--- /dev/null
+++ b/lib/libc/locale/isctype.c
@@ -0,0 +1,202 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Paul Borman at Krystal Technologies.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+
+#undef digittoint
+int
+digittoint(int c)
+{
+	return (__sbmaskrune(c, 0xFF));
+}
+
+#undef isalnum
+int
+isalnum(int c)
+{
+	return (__sbistype(c, _CTYPE_A|_CTYPE_N));
+}
+
+#undef isalpha
+int
+isalpha(int c)
+{
+	return (__sbistype(c, _CTYPE_A));
+}
+
+#undef isascii
+int
+isascii(int c)
+{
+	return ((c & ~0x7F) == 0);
+}
+
+#undef isblank
+int
+isblank(int c)
+{
+	return (__sbistype(c, _CTYPE_B));
+}
+
+#undef iscntrl
+int
+iscntrl(int c)
+{
+	return (__sbistype(c, _CTYPE_C));
+}
+
+#undef isdigit
+int
+isdigit(int c)
+{
+	return (__isctype(c, _CTYPE_D));
+}
+
+#undef isgraph
+int
+isgraph(int c)
+{
+	return (__sbistype(c, _CTYPE_G));
+}
+
+#undef ishexnumber 
+int
+ishexnumber(int c)
+{
+	return (__sbistype(c, _CTYPE_X));
+}
+
+#undef isideogram
+int
+isideogram(int c)
+{
+	return (__sbistype(c, _CTYPE_I));
+}
+
+#undef islower
+int
+islower(int c)
+{
+	return (__sbistype(c, _CTYPE_L));
+}
+
+#undef isnumber
+int
+isnumber(int c)
+{
+	return (__sbistype(c, _CTYPE_N));
+}
+
+#undef isphonogram	
+int
+isphonogram(int c)
+{
+	return (__sbistype(c, _CTYPE_Q));
+}
+
+#undef isprint
+int
+isprint(int c)
+{
+	return (__sbistype(c, _CTYPE_R));
+}
+
+#undef ispunct
+int
+ispunct(int c)
+{
+	return (__sbistype(c, _CTYPE_P));
+}
+
+#undef isrune
+int
+isrune(int c)
+{
+	return (__sbistype(c, 0xFFFFFF00L));
+}
+
+#undef isspace
+int
+isspace(int c)
+{
+	return (__sbistype(c, _CTYPE_S));
+}
+
+#undef isspecial
+int
+isspecial(int c)
+{
+	return (__sbistype(c, _CTYPE_T));
+}
+
+#undef isupper
+int
+isupper(int c)
+{
+	return (__sbistype(c, _CTYPE_U));
+}
+
+#undef isxdigit
+int
+isxdigit(int c)
+{
+	return (__isctype(c, _CTYPE_X));
+}
+
+#undef toascii
+int
+toascii(int c)
+{
+	return (c & 0x7F);
+}
+
+#undef tolower
+int
+tolower(int c)
+{
+	return (__sbtolower(c));
+}
+
+#undef toupper
+int
+toupper(int c)
+{
+	return (__sbtoupper(c));
+}
+