- Added strtoll() and strtoull(), with further changes to <limits.h>

and <stdlib.h>. git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14729 87f5fb63-7c3d-0410-a384-fd976d0f7a62
2025-12-08 14:59:05 +00:00 · 2004-09-20 17:16:07 +00:00
parent 7d21a272cc
commit a4b138e406
8 changed files with 431 additions and 5 deletions
--- a/library/stdlib_strtoull.c
+++ b/library/stdlib_strtoull.c
@@ -0,0 +1,201 @@
+/*
+ * $Id: stdlib_strtoull.c,v 1.1 2004-09-20 17:16:06 obarthel Exp $
+ *
+ * :ts=4
+ *
+ * Portable ISO 'C' (1994) runtime library for the Amiga computer
+ * Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Neither the name of Olaf Barthel nor the names of contributors
+ *     may be used to endorse or promote products derived from this
+ *     software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+
+#ifndef _STDLIB_NULL_POINTER_CHECK_H
+#include "stdlib_null_pointer_check.h"
+#endif /* _STDLIB_NULL_POINTER_CHECK_H */
+
+/****************************************************************************/
+
+#ifndef _STDLIB_HEADERS_H
+#include "stdlib_headers.h"
+#endif /* _STDLIB_HEADERS_H */
+
+/****************************************************************************/
+
+#if defined(USE_64_BIT_INTS)
+
+/****************************************************************************/
+
+unsigned long long
+strtoull(const char *str, char **ptr, int base)
+{
+	BOOL is_negative;
+	unsigned long long result = 0;
+	unsigned long long new_sum;
+	unsigned long long sum;
+	char c;
+
+	ENTER();
+
+	SHOWSTRING(str);
+	SHOWPOINTER(ptr);
+	SHOWVALUE(base);
+
+	assert(str != NULL && base >= 0);
+
+	#if defined(CHECK_FOR_NULL_POINTERS)
+	{
+		if(str == NULL)
+		{
+			SHOWMSG("invalid str parameter");
+
+			errno = EFAULT;
+			goto out;
+		}
+	}
+	#endif /* CHECK_FOR_NULL_POINTERS */
+
+	if(base < 0)
+	{
+		SHOWMSG("invalid base parameter");
+
+		errno = ERANGE;
+		goto out;
+	}
+
+	/* Skip all leading blanks. */
+	while((c = (*str)) != '\0')
+	{
+		if(NOT isspace(c))
+			break;
+
+		str++;
+	}
+
+	/* The first character may be a sign. */
+	if(c == '-')
+	{
+		/* It's a negative number. */
+		is_negative = TRUE;
+
+		str++;
+	}
+	else
+	{
+		/* It's not going to be negative. */
+		is_negative = FALSE;
+
+		/* But there may be a sign we will choose to
+		 * ignore.
+		 */
+		if(c == '+')
+			str++;
+	}
+
+	c = (*str);
+
+	/* There may be a leading '0x' to indicate that what
+	 * follows is a hexadecimal number.
+	 */
+	if(base == 0 || base == 16)
+	{
+		if((c == '0') && (str[1] == 'x' || str[1] == 'X'))
+		{
+			base = 16;
+
+			str += 2;
+
+			c = (*str);
+		}
+	}
+
+	/* If we still don't know what base to use and the
+	 * next letter to follow is a zero then this is
+	 * probably a number in octal notation.
+	 */
+	if(base == 0)
+	{
+		if(c == '0')
+			base = 8;
+		else
+			base = 10;
+	}
+
+	sum = 0;
+
+	if(1 <= base && base <= 36)
+	{
+		while(c != '\0')
+		{
+			if('0' <= c && c <= '9')
+				c -= '0';
+			else if ('a' <= c)
+				c -= 'a' - 10;
+			else if ('A' <= c)
+				c -= 'A' - 10;
+			else
+				break;
+
+			/* Ignore invalid numbers. */
+			if(c >= base)
+				break;
+
+			new_sum = base * sum + c;
+			if(new_sum < sum) /* overflow? */
+			{
+				errno = ERANGE;
+
+				result = ULONG_MAX;
+
+				goto out;
+			}
+
+			sum = new_sum;
+
+			str++;
+
+			c = (*str);
+		}
+	}
+
+	if(is_negative)
+		result = (-sum);
+	else
+		result = sum;
+
+ out:
+
+	/* If desired, remember where we stopped reading the
+	 * number from the buffer.
+	 */
+	if(ptr != NULL)
+		(*ptr) = (char *)str;
+
+	RETURN(result);
+	return(result);
+}
+
+/****************************************************************************/
+
+#endif /* USE_64_BIT_INTS */