1 files changed, 126 insertions, 0 deletions
diff --git a/lib/libc/iconv/_strtoul.h b/lib/libc/iconv/_strtoul.h
new file mode 100644
index 0000000..64e0d46
--- /dev/null
+++ b/lib/libc/iconv/_strtoul.h
@@ -0,0 +1,126 @@
+/* $FreeBSD$ */
+/* $NetBSD: _strtoul.h,v 1.1 2008/08/20 12:42:26 joerg Exp $ */
+
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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.
+ *
+ * Original version ID:
+ * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
+ */
+
+/*
+ * function template for strtoul, strtoull and strtoumax.
+ *
+ * parameters:
+ *	_FUNCNAME  : function name
+ *      __UINT     : return type
+ *      __UINT_MAX : upper limit of the return type
+ */
+
+__UINT
+_FUNCNAME(const char *nptr, char **endptr, int base)
+{
+	const char *s;
+	__UINT acc, cutoff;
+	unsigned char c;
+	int any, cutlim, i, neg;
+
+	/* check base value */
+	if (base && (base < 2 || base > 36)) {
+#if !defined(_KERNEL) && !defined(_STANDALONE)
+		errno = EINVAL;
+		return (0);
+#else
+		panic("%s: invalid base %d", __func__, base);
+#endif
+	}
+
+	/*
+	 * Skip white space and pick up leading +/- sign if any.
+	 * If base is 0, allow 0x for hex and 0 for octal, else
+	 * assume decimal; if base is already 16, allow 0x.
+	 */
+	s = nptr;
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else {
+		neg = 0;
+		if (c == '+')
+			c = *s++;
+	}
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = (c == '0' ? 8 : 10);
+
+	/*
+	 * See strtol for comments as to the logic used.
+	 */
+	cutoff = __UINT_MAX / (__UINT)base;
+	cutlim = (int)(__UINT_MAX % (__UINT)base);
+	for (acc = 0, any = 0;; c = *s++) {
+		if (isdigit(c))
+			i = c - '0';
+		else if (isalpha(c))
+			i = c - (isupper(c) ? 'A' - 10 : 'a' - 10);
+		else
+			break;
+		if (i >= base)
+			break;
+		if (any < 0)
+			continue;
+		if (acc > cutoff || (acc == cutoff && i > cutlim)) {
+			acc = __UINT_MAX;
+#if !defined(_KERNEL) && !defined(_STANDALONE)
+			any = -1;
+			errno = ERANGE;
+#else
+			any = 0;
+			break;
+#endif
+		} else {
+			any = 1;
+			acc *= (__UINT)base;
+			acc += i;
+		}
+	}
+	if (neg && any > 0)
+		acc = -acc;
+	if (endptr != NULL)
+		/* LINTED interface specification */
+		*endptr = __DECONST(void *, any ? s - 1 : nptr);
+	return (acc);
+}