/* -*- buffer-read-only: t -*- vi: set ro: */
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* vsprintf with automatic memory allocation.
- Copyright (C) 1999, 2002-2011 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2002-2013 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ with this program; if not, see <http://www.gnu.org/licenses/>. */
/* This file can be parametrized with the following macros:
VASNPRINTF The name of the function being defined.
{
const char *point;
/* Determine it in a multithread-safe way. We know nl_langinfo is
- multithread-safe on glibc systems and MacOS X systems, but is not required
+ multithread-safe on glibc systems and Mac OS X systems, but is not required
to be multithread-safe by POSIX. sprintf(), however, is multithread-safe.
localeconv() is rarely multithread-safe. */
# if HAVE_NL_LANGINFO && (__GLIBC__ || defined __UCLIBC__ || (defined __APPLE__ && defined __MACH__))
size_t s;
{
mp_limb_t msd = b_ptr[b_len - 1]; /* = b[n-1], > 0 */
- s = 31;
- if (msd >= 0x10000)
- {
- msd = msd >> 16;
- s -= 16;
- }
- if (msd >= 0x100)
- {
- msd = msd >> 8;
- s -= 8;
- }
- if (msd >= 0x10)
- {
- msd = msd >> 4;
- s -= 4;
- }
- if (msd >= 0x4)
+ /* Determine s = GMP_LIMB_BITS - integer_length (msd).
+ Code copied from gnulib's integer_length.c. */
+# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+ s = __builtin_clz (msd);
+# else
+# if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
+ if (GMP_LIMB_BITS <= DBL_MANT_BIT)
{
- msd = msd >> 2;
- s -= 2;
+ /* Use 'double' operations.
+ Assumes an IEEE 754 'double' implementation. */
+# define DBL_EXP_MASK ((DBL_MAX_EXP - DBL_MIN_EXP) | 7)
+# define DBL_EXP_BIAS (DBL_EXP_MASK / 2 - 1)
+# define NWORDS \
+ ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+ union { double value; unsigned int word[NWORDS]; } m;
+
+ /* Use a single integer to floating-point conversion. */
+ m.value = msd;
+
+ s = GMP_LIMB_BITS
+ - (((m.word[DBL_EXPBIT0_WORD] >> DBL_EXPBIT0_BIT) & DBL_EXP_MASK)
+ - DBL_EXP_BIAS);
}
- if (msd >= 0x2)
+ else
+# undef NWORDS
+# endif
{
- msd = msd >> 1;
- s -= 1;
+ s = 31;
+ if (msd >= 0x10000)
+ {
+ msd = msd >> 16;
+ s -= 16;
+ }
+ if (msd >= 0x100)
+ {
+ msd = msd >> 8;
+ s -= 8;
+ }
+ if (msd >= 0x10)
+ {
+ msd = msd >> 4;
+ s -= 4;
+ }
+ if (msd >= 0x4)
+ {
+ msd = msd >> 2;
+ s -= 2;
+ }
+ if (msd >= 0x2)
+ {
+ msd = msd >> 1;
+ s -= 1;
+ }
}
+# endif
}
/* 0 <= s < GMP_LIMB_BITS.
Copy b, shifting it left by s bits. */
y = frexpl (x, &exp);
if (!(y >= 0.0L && y < 1.0L))
abort ();
- /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * LDBL_MANT_BIT), and the
+ /* x = 2^exp * y = 2^(exp - LDBL_MANT_BIT) * (y * 2^LDBL_MANT_BIT), and the
latter is an integer. */
- /* Convert the mantissa (y * LDBL_MANT_BIT) to a sequence of limbs.
+ /* Convert the mantissa (y * 2^LDBL_MANT_BIT) to a sequence of limbs.
I'm not sure whether it's safe to cast a 'long double' value between
2^31 and 2^32 to 'unsigned int', therefore play safe and cast only
'long double' values between 0 and 2^16 (to 'unsigned int' or 'int',
y = frexp (x, &exp);
if (!(y >= 0.0 && y < 1.0))
abort ();
- /* x = 2^exp * y = 2^(exp - DBL_MANT_BIT) * (y * DBL_MANT_BIT), and the
+ /* x = 2^exp * y = 2^(exp - DBL_MANT_BIT) * (y * 2^DBL_MANT_BIT), and the
latter is an integer. */
- /* Convert the mantissa (y * DBL_MANT_BIT) to a sequence of limbs.
+ /* Convert the mantissa (y * 2^DBL_MANT_BIT) to a sequence of limbs.
I'm not sure whether it's safe to cast a 'double' value between
2^31 and 2^32 to 'unsigned int', therefore play safe and cast only
'double' values between 0 and 2^16 (to 'unsigned int' or 'int',
/* Returns the number of TCHAR_T units needed as temporary space for the result
of sprintf or SNPRINTF of a single conversion directive. */
-static inline size_t
+static size_t
MAX_ROOM_NEEDED (const arguments *ap, size_t arg_index, FCHAR_T conversion,
arg_type type, int flags, size_t width, int has_precision,
size_t precision, int pad_ourselves)
if (has_width)
{
# if ENABLE_UNISTDIO
- /* Outside POSIX, it's preferrable to compare the width
+ /* Outside POSIX, it's preferable to compare the width
against the number of _characters_ of the converted
value. */
w = DCHAR_MBSNLEN (result + length, characters);
in format strings in writable memory may crash the program
(if compiled with _FORTIFY_SOURCE=2), so we should avoid it
in this situation. */
- /* On native Win32 systems (such as mingw), we can avoid using
+ /* On native Windows systems (such as mingw), we can avoid using
%n because:
- Although the gl_SNPRINTF_TRUNCATION_C99 test fails,
snprintf does not write more than the specified number
- Although the gl_SNPRINTF_RETVAL_C99 test fails, snprintf
allows us to recognize the case of an insufficient
buffer size: it returns -1 in this case.
- On native Win32 systems (such as mingw) where the OS is
+ On native Windows systems (such as mingw) where the OS is
Windows Vista, the use of %n in format strings by default
crashes the program. See
<http://gcc.gnu.org/ml/gcc/2007-06/msg00122.html> and
size_t tmp_length =
MAX_ROOM_NEEDED (&a, dp->arg_index,
dp->conversion, type, flags,
- width, has_precision,
+ has_width ? width : 0,
+ has_precision,
precision, pad_ourselves);
if (maxlen < tmp_length)
{
size_t w;
# if ENABLE_UNISTDIO
- /* Outside POSIX, it's preferrable to compare the width
+ /* Outside POSIX, it's preferable to compare the width
against the number of _characters_ of the converted
value. */
w = DCHAR_MBSNLEN (result + length, count);
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