mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
924b9ff68d
* sysdeps/mach/hurd/getcwd.c: Use __file_name_lookup_under. * sysdeps/mach/hurd/bind.c: Likewise. * sysdeps/mach/hurd/access.c: Use new __hurd_file_name_lookup calling convention. * hurd/hurdexec.c: Undo last change (10 Oct 95).
323 lines
9.6 KiB
C
323 lines
9.6 KiB
C
/* Include file for internal GNU MP types and definitions.
|
|
|
|
Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Library General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The GNU MP 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 Library General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#if ! defined (alloca)
|
|
#if defined (__GNUC__)
|
|
#define alloca __builtin_alloca
|
|
#endif
|
|
#endif
|
|
|
|
#if ! defined (alloca)
|
|
#if defined (__sparc__) || defined (sparc) || defined (__sgi)
|
|
#include <alloca.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef NULL
|
|
#define NULL 0L
|
|
#endif
|
|
|
|
#if ! defined (__GNUC__)
|
|
#define inline /* Empty */
|
|
void *alloca();
|
|
#endif
|
|
|
|
#define ABS(x) (x >= 0 ? x : -x)
|
|
#define MIN(l,o) ((l) < (o) ? (l) : (o))
|
|
#define MAX(h,i) ((h) > (i) ? (h) : (i))
|
|
|
|
#include "gmp-mparam.h"
|
|
/* #include "longlong.h" */
|
|
|
|
#ifdef __STDC__
|
|
void *malloc (size_t);
|
|
void *realloc (void *, size_t);
|
|
void free (void *);
|
|
|
|
extern void * (*_mp_allocate_func) (size_t);
|
|
extern void * (*_mp_reallocate_func) (void *, size_t, size_t);
|
|
extern void (*_mp_free_func) (void *, size_t);
|
|
|
|
void *_mp_default_allocate (size_t);
|
|
void *_mp_default_reallocate (void *, size_t, size_t);
|
|
void _mp_default_free (void *, size_t);
|
|
|
|
#else
|
|
|
|
#define const /* Empty */
|
|
#define signed /* Empty */
|
|
|
|
void *malloc ();
|
|
void *realloc ();
|
|
void free ();
|
|
|
|
extern void * (*_mp_allocate_func) ();
|
|
extern void * (*_mp_reallocate_func) ();
|
|
extern void (*_mp_free_func) ();
|
|
|
|
void *_mp_default_allocate ();
|
|
void *_mp_default_reallocate ();
|
|
void _mp_default_free ();
|
|
#endif
|
|
|
|
/* Copy NLIMBS *limbs* from SRC to DST. */
|
|
#define MPN_COPY_INCR(DST, SRC, NLIMBS) \
|
|
do { \
|
|
mp_size_t __i; \
|
|
for (__i = 0; __i < (NLIMBS); __i++) \
|
|
(DST)[__i] = (SRC)[__i]; \
|
|
} while (0)
|
|
#define MPN_COPY_DECR(DST, SRC, NLIMBS) \
|
|
do { \
|
|
mp_size_t __i; \
|
|
for (__i = (NLIMBS) - 1; __i >= 0; __i--) \
|
|
(DST)[__i] = (SRC)[__i]; \
|
|
} while (0)
|
|
#define MPN_COPY MPN_COPY_INCR
|
|
|
|
/* Zero NLIMBS *limbs* AT DST. */
|
|
#define MPN_ZERO(DST, NLIMBS) \
|
|
do { \
|
|
mp_size_t __i; \
|
|
for (__i = 0; __i < (NLIMBS); __i++) \
|
|
(DST)[__i] = 0; \
|
|
} while (0)
|
|
|
|
#define MPN_NORMALIZE(DST, NLIMBS) \
|
|
do { \
|
|
while (NLIMBS > 0) \
|
|
{ \
|
|
if ((DST)[(NLIMBS) - 1] != 0) \
|
|
break; \
|
|
NLIMBS--; \
|
|
} \
|
|
} while (0)
|
|
#define MPN_NORMALIZE_NOT_ZERO(DST, NLIMBS) \
|
|
do { \
|
|
while (1) \
|
|
{ \
|
|
if ((DST)[(NLIMBS) - 1] != 0) \
|
|
break; \
|
|
NLIMBS--; \
|
|
} \
|
|
} while (0)
|
|
|
|
/* Swap (mp_ptr, mp_size_t) (U, UL) with (V, VL) */
|
|
#define MPN_SWAP(u, l, v, m) \
|
|
do { \
|
|
{ mp_ptr _; _ = (u), (u) = (v), (v) = _;} \
|
|
{ mp_size_t _; _ = (l), (l) = (m), (m) = _;} \
|
|
} while (0)
|
|
|
|
/* Return true iff the limb X has less bits than the limb Y. */
|
|
#define MPN_LESS_BITS_LIMB(x,y) ((x) < (y) && (x) < ((x) ^ (y)))
|
|
|
|
/* Return true iff (mp_ptr, mp_size_t) (U, UL) has less bits than (V, VL). */
|
|
#define MPN_LESS_BITS(u, l, v, m) \
|
|
((l) < (m) \
|
|
|| ((l) == (m) && (l) != 0 && MPN_LESS_BITS_LIMB ((u)[(l - 1)], (v)[(l) - 1])))
|
|
|
|
/* Return true iff (mp_ptr, mp_size_t) (U, UL) has more bits than (V, VL). */
|
|
#define MPN_MORE_BITS(u, l, v, m) MPN_LESS_BITS (v, m, u, l)
|
|
|
|
/* Perform twos complement on (mp_ptr, mp_size_t) (U, UL),
|
|
putting result at (v, VL). Precondition: U[0] != 0. */
|
|
#define MPN_COMPL_INCR(u, v, l) \
|
|
do { \
|
|
mp_size_t _ = 0; \
|
|
(u)[0] = -(v)[_]; \
|
|
while (_++ < (l)) \
|
|
(u)[_] = ~(v)[_]; \
|
|
} while (0)
|
|
#define MPN_COMPL MPN_COMPL_INCR
|
|
|
|
/* Initialize the MP_INT X with space for NLIMBS limbs.
|
|
X should be a temporary variable, and it will be automatically
|
|
cleared out when the running function returns.
|
|
We use __x here to make it possible to accept both mpz_ptr and mpz_t
|
|
arguments. */
|
|
#define MPZ_TMP_INIT(X, NLIMBS) \
|
|
do { \
|
|
mpz_ptr __x = (X); \
|
|
__x->alloc = (NLIMBS); \
|
|
__x->d = (mp_ptr) alloca ((NLIMBS) * BYTES_PER_MP_LIMB); \
|
|
} while (0)
|
|
|
|
#define MPN_MUL_N_RECURSE(prodp, up, vp, size, tspace) \
|
|
do { \
|
|
if ((size) < KARATSUBA_THRESHOLD) \
|
|
____mpn_mul_n_basecase (prodp, up, vp, size); \
|
|
else \
|
|
____mpn_mul_n (prodp, up, vp, size, tspace); \
|
|
} while (0);
|
|
#define MPN_SQR_N_RECURSE(prodp, up, size, tspace) \
|
|
do { \
|
|
if ((size) < KARATSUBA_THRESHOLD) \
|
|
____mpn_sqr_n_basecase (prodp, up, size); \
|
|
else \
|
|
____mpn_sqr_n (prodp, up, size, tspace); \
|
|
} while (0);
|
|
|
|
/* Structure for conversion between internal binary format and
|
|
strings in base 2..36. */
|
|
struct bases
|
|
{
|
|
/* Number of digits in the conversion base that always fits in
|
|
an mp_limb. For example, for base 10 this is 10, since
|
|
2**32 = 4294967296 has ten digits. */
|
|
int chars_per_limb;
|
|
|
|
/* log(2)/log(conversion_base) */
|
|
float chars_per_bit_exactly;
|
|
|
|
/* big_base is conversion_base**chars_per_limb, i.e. the biggest
|
|
number that fits a word, built by factors of conversion_base.
|
|
Exception: For 2, 4, 8, etc, big_base is log2(base), i.e. the
|
|
number of bits used to represent each digit in the base. */
|
|
mp_limb big_base;
|
|
|
|
/* big_base_inverted is a BITS_PER_MP_LIMB bit approximation to
|
|
1/big_base, represented as a fixed-point number. Instead of
|
|
dividing by big_base an application can choose to multiply
|
|
by big_base_inverted. */
|
|
mp_limb big_base_inverted;
|
|
};
|
|
|
|
extern const struct bases __mp_bases[];
|
|
extern mp_size_t __gmp_default_fp_limb_precision;
|
|
|
|
/* Divide the two-limb number in (NH,,NL) by D, with DI being the largest
|
|
limb not larger than (2**(2*BITS_PER_MP_LIMB))/D - (2**BITS_PER_MP_LIMB).
|
|
If this would yield overflow, DI should be the largest possible number
|
|
(i.e., only ones). For correct operation, the most significant bit of D
|
|
has to be set. Put the quotient in Q and the remainder in R. */
|
|
#define udiv_qrnnd_preinv(q, r, nh, nl, d, di) \
|
|
do { \
|
|
mp_limb _q, _ql, _r; \
|
|
mp_limb _xh, _xl; \
|
|
umul_ppmm (_q, _ql, (nh), (di)); \
|
|
_q += (nh); /* DI is 2**BITS_PER_MP_LIMB too small */\
|
|
umul_ppmm (_xh, _xl, _q, (d)); \
|
|
sub_ddmmss (_xh, _r, (nh), (nl), _xh, _xl); \
|
|
if (_xh != 0) \
|
|
{ \
|
|
sub_ddmmss (_xh, _r, _xh, _r, 0, (d)); \
|
|
_q += 1; \
|
|
if (_xh != 0) \
|
|
{ \
|
|
sub_ddmmss (_xh, _r, _xh, _r, 0, (d)); \
|
|
_q += 1; \
|
|
} \
|
|
} \
|
|
if (_r >= (d)) \
|
|
{ \
|
|
_r -= (d); \
|
|
_q += 1; \
|
|
} \
|
|
(r) = _r; \
|
|
(q) = _q; \
|
|
} while (0)
|
|
/* Like udiv_qrnnd_preinv, but for for any value D. DNORM is D shifted left
|
|
so that its most significant bit is set. LGUP is ceil(log2(D)). */
|
|
#define udiv_qrnnd_preinv2gen(q, r, nh, nl, d, di, dnorm, lgup) \
|
|
do { \
|
|
mp_limb n2, n10, n1, nadj, q1; \
|
|
mp_limb _xh, _xl; \
|
|
n2 = ((nh) << (BITS_PER_MP_LIMB - (lgup))) + ((nl) >> 1 >> (l - 1));\
|
|
n10 = (nl) << (BITS_PER_MP_LIMB - (lgup)); \
|
|
n1 = ((mp_limb_signed) n10 >> (BITS_PER_MP_LIMB - 1)); \
|
|
nadj = n10 + (n1 & (dnorm)); \
|
|
umul_ppmm (_xh, _xl, di, n2 - n1); \
|
|
add_ssaaaa (_xh, _xl, _xh, _xl, 0, nadj); \
|
|
q1 = ~(n2 + _xh); \
|
|
umul_ppmm (_xh, _xl, q1, d); \
|
|
add_ssaaaa (_xh, _xl, _xh, _xl, nh, nl); \
|
|
_xh -= (d); \
|
|
(r) = _xl + ((d) & _xh); \
|
|
(q) = _xh - q1; \
|
|
} while (0)
|
|
/* Exactly like udiv_qrnnd_preinv, but branch-free. It is not clear which
|
|
version to use. */
|
|
#define udiv_qrnnd_preinv2norm(q, r, nh, nl, d, di) \
|
|
do { \
|
|
mp_limb n2, n10, n1, nadj, q1; \
|
|
mp_limb _xh, _xl; \
|
|
n2 = (nh); \
|
|
n10 = (nl); \
|
|
n1 = ((mp_limb_signed) n10 >> (BITS_PER_MP_LIMB - 1)); \
|
|
nadj = n10 + (n1 & (d)); \
|
|
umul_ppmm (_xh, _xl, di, n2 - n1); \
|
|
add_ssaaaa (_xh, _xl, _xh, _xl, 0, nadj); \
|
|
q1 = ~(n2 + _xh); \
|
|
umul_ppmm (_xh, _xl, q1, d); \
|
|
add_ssaaaa (_xh, _xl, _xh, _xl, nh, nl); \
|
|
_xh -= (d); \
|
|
(r) = _xl + ((d) & _xh); \
|
|
(q) = _xh - q1; \
|
|
} while (0)
|
|
|
|
#if defined (__GNUC__)
|
|
/* Define stuff for longlong.h. */
|
|
typedef unsigned int UQItype __attribute__ ((mode (QI)));
|
|
typedef int SItype __attribute__ ((mode (SI)));
|
|
typedef unsigned int USItype __attribute__ ((mode (SI)));
|
|
typedef int DItype __attribute__ ((mode (DI)));
|
|
typedef unsigned int UDItype __attribute__ ((mode (DI)));
|
|
#else
|
|
typedef unsigned char UQItype;
|
|
typedef long SItype;
|
|
typedef unsigned long USItype;
|
|
#endif
|
|
|
|
typedef mp_limb UWtype;
|
|
typedef unsigned int UHWtype;
|
|
#define W_TYPE_SIZE BITS_PER_MP_LIMB
|
|
|
|
|
|
#ifndef IEEE_DOUBLE_BIG_ENDIAN
|
|
#define IEEE_DOUBLE_BIG_ENDIAN 1
|
|
#endif
|
|
|
|
#if IEEE_DOUBLE_BIG_ENDIAN
|
|
union ieee_double_extract
|
|
{
|
|
struct
|
|
{
|
|
unsigned long sig:1;
|
|
unsigned long exp:11;
|
|
unsigned long manh:20;
|
|
unsigned long manl:32;
|
|
} s;
|
|
double d;
|
|
};
|
|
#else
|
|
union ieee_double_extract
|
|
{
|
|
struct
|
|
{
|
|
unsigned long manl:32;
|
|
unsigned long manh:20;
|
|
unsigned long exp:11;
|
|
unsigned long sig:1;
|
|
} s;
|
|
double d;
|
|
};
|
|
#endif
|