about summary refs log tree commit diff
path: root/sysdeps/generic/_itoa.h
diff options
context:
space:
mode:
authorH.J. Lu <hjl.tools@gmail.com>2012-03-20 16:00:23 -0700
committerH.J. Lu <hjl.tools@gmail.com>2012-03-20 16:00:23 -0700
commiteb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1 (patch)
treeaae4fe72d6bb48e8e0cb0d0b85676895fab29a8e /sysdeps/generic/_itoa.h
parentd1af992d0d8184db0a4d264c00a2720722e1a280 (diff)
downloadglibc-eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1.tar.gz
glibc-eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1.tar.xz
glibc-eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1.zip
Move stdio-common/_itoa.h to sysdeps/generic
Diffstat (limited to 'sysdeps/generic/_itoa.h')
-rw-r--r--sysdeps/generic/_itoa.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/sysdeps/generic/_itoa.h b/sysdeps/generic/_itoa.h
new file mode 100644
index 0000000000..8870ee0286
--- /dev/null
+++ b/sysdeps/generic/_itoa.h
@@ -0,0 +1,92 @@
+/* Internal function for converting integers to ASCII.
+   Copyright (C) 1994-1999,2002,2003,2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _ITOA_H
+#define _ITOA_H
+
+#include <limits.h>
+
+/* Convert VALUE into ASCII in base BASE (2..36).
+   Write backwards starting the character just before BUFLIM.
+   Return the address of the first (left-to-right) character in the number.
+   Use upper case letters iff UPPER_CASE is nonzero.  */
+
+extern char *_itoa (unsigned long long int value, char *buflim,
+		    unsigned int base, int upper_case);
+
+extern const char _itoa_upper_digits[];
+extern const char _itoa_upper_digits_internal[] attribute_hidden;
+extern const char _itoa_lower_digits[];
+extern const char _itoa_lower_digits_internal[] attribute_hidden;
+
+#ifndef NOT_IN_libc
+extern char *_itoa_word (unsigned long value, char *buflim,
+			 unsigned int base, int upper_case);
+#else
+static inline char * __attribute__ ((unused, always_inline))
+_itoa_word (unsigned long value, char *buflim,
+	    unsigned int base, int upper_case)
+{
+  const char *digits = (upper_case
+# if defined IS_IN_rtld
+			? INTUSE(_itoa_upper_digits)
+			: INTUSE(_itoa_lower_digits)
+# else
+			? _itoa_upper_digits
+			: _itoa_lower_digits
+# endif
+		       );
+
+  switch (base)
+    {
+# define SPECIAL(Base)							      \
+    case Base:								      \
+      do								      \
+	*--buflim = digits[value % Base];				      \
+      while ((value /= Base) != 0);					      \
+      break
+
+      SPECIAL (10);
+      SPECIAL (16);
+      SPECIAL (8);
+    default:
+      do
+	*--buflim = digits[value % base];
+      while ((value /= base) != 0);
+    }
+  return buflim;
+}
+# undef SPECIAL
+#endif
+
+/* Similar to the _itoa functions, but output starts at buf and pointer
+   after the last written character is returned.  */
+extern char *_fitoa_word (unsigned long value, char *buf, unsigned int base,
+			  int upper_case) attribute_hidden;
+extern char *_fitoa (unsigned long long value, char *buf, unsigned int base,
+		     int upper_case) attribute_hidden;
+
+#if LONG_MAX == LLONG_MAX
+/* No need for special long long versions.  */
+# define _itoa(value, buf, base, upper_case) \
+  _itoa_word (value, buf, base, upper_case)
+# define _fitoa(value, buf, base, upper_case) \
+  _fitoa_word (value, buf, base, upper_case)
+#endif
+
+#endif	/* itoa.h */