From 238455adfab4f8070ac65400aac22bb8a9e502fc Mon Sep 17 00:00:00 2001
From: Corinna Vinschen <corinna@vinschen.de>
Date: Wed, 10 Aug 2016 16:30:46 +0200
Subject: Implement strto[dflu]_l/wcsto[dflu]_l

Implement GNU extensions strtod_l, strtof_l, strtol_l, strtold_l, strtoll_l,
strtoul_l, strtoull_l, wcstod_l, wcstof_l, wcstol_l, wcstold_l, wcstoll_l,
wcstoul_l, wcstoull_l.

Export from Cygwin, fix posix.xml.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
---
 newlib/libc/stdlib/strtoull.c | 117 +++++++++++++++++++++++++++++++++++++-----
 1 file changed, 105 insertions(+), 12 deletions(-)

(limited to 'newlib/libc/stdlib/strtoull.c')

diff --git a/newlib/libc/stdlib/strtoull.c b/newlib/libc/stdlib/strtoull.c
index 13a54dbb4..ba6452e62 100644
--- a/newlib/libc/stdlib/strtoull.c
+++ b/newlib/libc/stdlib/strtoull.c
@@ -1,19 +1,26 @@
 /*
 FUNCTION
-	<<strtoull>>---string to unsigned long long
+	<<strtoull>>, <<strtoull_l>>---string to unsigned long long
 
 INDEX
 	strtoull
+
 INDEX
-	_strtoull_r
+	strtoull_l
 
 ANSI_SYNOPSIS
 	#include <stdlib.h>
-        unsigned long long strtoull(const char *restrict <[s]>, char **restrict <[ptr]>,
-                              int <[base]>);
+        unsigned long long strtoull(const char *restrict <[s]>,
+				    char **restrict <[ptr]>, int <[base]>);
+
+	#include <stdlib.h>
+        unsigned long long strtoull_l(const char *restrict <[s]>,
+				      char **restrict <[ptr]>, int <[base]>,
+				      locale_t <[locale]>);
 
-        unsigned long long _strtoull_r(void *<[reent]>, const char *restrict <[s]>,
-                              char **restrict <[ptr]>, int <[base]>);
+        unsigned long long _strtoull_r(void *<[reent]>,
+				       const char *restrict <[s]>,
+				       char **restrict <[ptr]>, int <[base]>);
 
 TRAD_SYNOPSIS
 	#include <stdlib.h>
@@ -68,19 +75,23 @@ with a substring in acceptable form), no conversion
 is performed and the value of <[s]> is stored in <[ptr]> (if <[ptr]> is
 not <<NULL>>).
 
+<<strtoull_l>> is like <<strtoull>> but performs the conversion based on the
+locale specified by the locale object locale.  If <[locale]> is
+LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
+
 The alternate function <<_strtoull_r>> is a reentrant version.  The
 extra argument <[reent]> is a pointer to a reentrancy structure.
 
-
 RETURNS
-<<strtoull>> returns the converted value, if any. If no conversion was
-made, <<0>> is returned.
+<<strtoull>>, <<strtoull_l>> return the converted value, if any. If no
+conversion was made, <<0>> is returned.
 
-<<strtoull>> returns <<ULONG_LONG_MAX>> if the magnitude of the converted
-value is too large, and sets <<errno>> to <<ERANGE>>.
+<<strtoull>>, <<strtoull_l>> return <<ULONG_LONG_MAX>> if the magnitude
+of the converted value is too large, and sets <<errno>> to <<ERANGE>>.
 
 PORTABILITY
 <<strtoull>> is ANSI.
+<<strtoull_l>> is a GNU extension.
 
 <<strtoull>> requires no supporting OS subroutines.
 */
@@ -118,22 +129,104 @@ PORTABILITY
  * SUCH DAMAGE.
  */
 
+#define _GNU_SOURCE
 #include <_ansi.h>
 #include <limits.h>
 #include <ctype.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <reent.h>
+#include "../locale/setlocale.h"
+
+/*
+ * Convert a string to an unsigned long long integer.
+ */
+static unsigned long long
+_strtoull_l (struct _reent *rptr, const char *__restrict nptr,
+	     char **__restrict endptr, int base, locale_t loc)
+{
+	register const unsigned char *s = (const unsigned char *)nptr;
+	register unsigned long long acc;
+	register int c;
+	register unsigned long long cutoff;
+	register int neg = 0, any, cutlim;
+
+	/*
+	 * See strtol for comments as to the logic used.
+	 */
+	do {
+		c = *s++;
+	} while (isspace_l(c, loc));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else 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;
+	cutoff = (unsigned long long)ULONG_LONG_MAX / (unsigned long long)base;
+	cutlim = (unsigned long long)ULONG_LONG_MAX % (unsigned long long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (c >= '0' && c <= '9')
+			c -= '0';
+		else if (c >= 'A' && c <= 'Z')
+			c -= 'A' - 10;
+		else if (c >= 'a' && c <= 'z')
+			c -= 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+               if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
+			any = -1;
+		else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = ULONG_LONG_MAX;
+		rptr->_errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *) (any ? (char *)s - 1 : nptr);
+	return (acc);
+}
+
+unsigned long long
+_DEFUN (_strtoull_r, (rptr, nptr, endptr, base),
+	struct _reent *rptr _AND
+	_CONST char *__restrict nptr _AND
+	char **__restrict endptr _AND
+	int base)
+{
+	return _strtoull_l (rptr, nptr, endptr, base, __get_current_locale ());
+}
 
 #ifndef _REENT_ONLY
 
+unsigned long long
+strtoull_l (const char *__restrict s, char **__restrict ptr, int base,
+	    locale_t loc)
+{
+	return _strtoull_l (_REENT, s, ptr, base, loc);
+}
+
 unsigned long long
 _DEFUN (strtoull, (s, ptr, base),
 	_CONST char *__restrict s _AND
 	char **__restrict ptr _AND
 	int base)
 {
-	return _strtoull_r (_REENT, s, ptr, base);
+	return _strtoull_l (_REENT, s, ptr, base, __get_current_locale ());
 }
 
 #endif
-- 
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