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BRNSystems merged 95 commits from Mirrorlandia_minetest/minetest:master into master 2024-01-28 00:16:42 +01:00
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lib/gmp/mini-gmp.c
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@ -1,27 +1,39 @@
/* mini-gmp, a minimalistic implementation of a GNU GMP subset. /* mini-gmp, a minimalistic implementation of a GNU GMP subset.
Contributed to the GNU project by Niels Möller Contributed to the GNU project by Niels Möller
Additional functionalities and improvements by Marco Bodrato.
Copyright 1991-1997, 1999-2019 Free Software Foundation, Inc. Copyright 1991-1997, 1999-2022 Free Software Foundation, Inc.
This file is part of the GNU MP Library. This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify The GNU MP 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 it under the terms of either:
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version. * the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any
later version.
or both in parallel, as here.
The GNU MP Library is distributed in the hope that it will be useful, but 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 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
License for more details. for more details.
You should have received a copy of the GNU Lesser General Public License You should have received copies of the GNU General Public License and the
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ GNU Lesser General Public License along with the GNU MP Library. If not,
see https://www.gnu.org/licenses/. */
/* NOTE: All functions in this file which are not declared in /* NOTE: All functions in this file which are not declared in
mini-gmp.h are internal, and are not intended to be compatible mini-gmp.h are internal, and are not intended to be compatible
neither with GMP nor with future versions of mini-gmp. */ with GMP or with future versions of mini-gmp. */
/* Much of the material copied from GMP files, including: gmp-impl.h, /* Much of the material copied from GMP files, including: gmp-impl.h,
longlong.h, mpn/generic/add_n.c, mpn/generic/addmul_1.c, longlong.h, mpn/generic/add_n.c, mpn/generic/addmul_1.c,
@ -43,7 +55,7 @@ along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#include <float.h> #include <float.h>
#endif #endif
/* Macros */ /* Macros */
#define GMP_LIMB_BITS (sizeof(mp_limb_t) * CHAR_BIT) #define GMP_LIMB_BITS (sizeof(mp_limb_t) * CHAR_BIT)
@ -79,6 +91,7 @@ along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#define gmp_assert_nocarry(x) do { \ #define gmp_assert_nocarry(x) do { \
mp_limb_t __cy = (x); \ mp_limb_t __cy = (x); \
assert (__cy == 0); \ assert (__cy == 0); \
(void) (__cy); \
} while (0) } while (0)
#define gmp_clz(count, x) do { \ #define gmp_clz(count, x) do { \
@ -137,6 +150,7 @@ along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
mp_limb_t __x0, __x1, __x2, __x3; \ mp_limb_t __x0, __x1, __x2, __x3; \
unsigned __ul, __vl, __uh, __vh; \ unsigned __ul, __vl, __uh, __vh; \
mp_limb_t __u = (u), __v = (v); \ mp_limb_t __u = (u), __v = (v); \
assert (sizeof (unsigned) * 2 >= sizeof (mp_limb_t)); \
\ \
__ul = __u & GMP_LLIMB_MASK; \ __ul = __u & GMP_LLIMB_MASK; \
__uh = __u >> (GMP_LIMB_BITS / 2); \ __uh = __u >> (GMP_LIMB_BITS / 2); \
@ -158,12 +172,19 @@ along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
} \ } \
} while (0) } while (0)
/* If mp_limb_t is of size smaller than int, plain u*v implies
automatic promotion to *signed* int, and then multiply may overflow
and cause undefined behavior. Explicitly cast to unsigned int for
that case. */
#define gmp_umullo_limb(u, v) \
((sizeof(mp_limb_t) >= sizeof(int)) ? (u)*(v) : (unsigned int)(u) * (v))
#define gmp_udiv_qrnnd_preinv(q, r, nh, nl, d, di) \ #define gmp_udiv_qrnnd_preinv(q, r, nh, nl, d, di) \
do { \ do { \
mp_limb_t _qh, _ql, _r, _mask; \ mp_limb_t _qh, _ql, _r, _mask; \
gmp_umul_ppmm (_qh, _ql, (nh), (di)); \ gmp_umul_ppmm (_qh, _ql, (nh), (di)); \
gmp_add_ssaaaa (_qh, _ql, _qh, _ql, (nh) + 1, (nl)); \ gmp_add_ssaaaa (_qh, _ql, _qh, _ql, (nh) + 1, (nl)); \
_r = (nl) - _qh * (d); \ _r = (nl) - gmp_umullo_limb (_qh, (d)); \
_mask = -(mp_limb_t) (_r > _ql); /* both > and >= are OK */ \ _mask = -(mp_limb_t) (_r > _ql); /* both > and >= are OK */ \
_qh += _mask; \ _qh += _mask; \
_r += _mask & (d); \ _r += _mask & (d); \
@ -184,7 +205,7 @@ along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
gmp_add_ssaaaa ((q), _q0, (q), _q0, (n2), (n1)); \ gmp_add_ssaaaa ((q), _q0, (q), _q0, (n2), (n1)); \
\ \
/* Compute the two most significant limbs of n - q'd */ \ /* Compute the two most significant limbs of n - q'd */ \
(r1) = (n1) - (d1) * (q); \ (r1) = (n1) - gmp_umullo_limb ((d1), (q)); \
gmp_sub_ddmmss ((r1), (r0), (r1), (n0), (d1), (d0)); \ gmp_sub_ddmmss ((r1), (r0), (r1), (n0), (d1), (d0)); \
gmp_umul_ppmm (_t1, _t0, (d0), (q)); \ gmp_umul_ppmm (_t1, _t0, (d0), (q)); \
gmp_sub_ddmmss ((r1), (r0), (r1), (r0), _t1, _t0); \ gmp_sub_ddmmss ((r1), (r0), (r1), (r0), _t1, _t0); \
@ -340,20 +361,27 @@ mp_set_memory_functions (void *(*alloc_func) (size_t),
gmp_free_func = free_func; gmp_free_func = free_func;
} }
#define gmp_xalloc(size) ((*gmp_allocate_func)((size))) #define gmp_alloc(size) ((*gmp_allocate_func)((size)))
#define gmp_free(p) ((*gmp_free_func) ((p), 0)) #define gmp_free(p, size) ((*gmp_free_func) ((p), (size)))
#define gmp_realloc(ptr, old_size, size) ((*gmp_reallocate_func)(ptr, old_size, size))
static mp_ptr static mp_ptr
gmp_xalloc_limbs (mp_size_t size) gmp_alloc_limbs (mp_size_t size)
{ {
return (mp_ptr) gmp_xalloc (size * sizeof (mp_limb_t)); return (mp_ptr) gmp_alloc (size * sizeof (mp_limb_t));
} }
static mp_ptr static mp_ptr
gmp_xrealloc_limbs (mp_ptr old, mp_size_t size) gmp_realloc_limbs (mp_ptr old, mp_size_t old_size, mp_size_t size)
{ {
assert (size > 0); assert (size > 0);
return (mp_ptr) (*gmp_reallocate_func) (old, 0, size * sizeof (mp_limb_t)); return (mp_ptr) gmp_realloc (old, old_size * sizeof (mp_limb_t), size * sizeof (mp_limb_t));
}
static void
gmp_free_limbs (mp_ptr old, mp_size_t size)
{
gmp_free (old, size * sizeof (mp_limb_t));
} }
@ -765,6 +793,7 @@ mpn_invert_3by2 (mp_limb_t u1, mp_limb_t u0)
mp_limb_t p, ql; mp_limb_t p, ql;
unsigned ul, uh, qh; unsigned ul, uh, qh;
assert (sizeof (unsigned) * 2 >= sizeof (mp_limb_t));
/* For notation, let b denote the half-limb base, so that B = b^2. /* For notation, let b denote the half-limb base, so that B = b^2.
Split u1 = b uh + ul. */ Split u1 = b uh + ul. */
ul = u1 & GMP_LLIMB_MASK; ul = u1 & GMP_LLIMB_MASK;
@ -945,11 +974,17 @@ mpn_div_qr_1_preinv (mp_ptr qp, mp_srcptr np, mp_size_t nn,
mp_limb_t d, di; mp_limb_t d, di;
mp_limb_t r; mp_limb_t r;
mp_ptr tp = NULL; mp_ptr tp = NULL;
mp_size_t tn = 0;
if (inv->shift > 0) if (inv->shift > 0)
{ {
/* Shift, reusing qp area if possible. In-place shift if qp == np. */ /* Shift, reusing qp area if possible. In-place shift if qp == np. */
tp = qp ? qp : gmp_xalloc_limbs (nn); tp = qp;
if (!tp)
{
tn = nn;
tp = gmp_alloc_limbs (tn);
}
r = mpn_lshift (tp, np, nn, inv->shift); r = mpn_lshift (tp, np, nn, inv->shift);
np = tp; np = tp;
} }
@ -966,8 +1001,8 @@ mpn_div_qr_1_preinv (mp_ptr qp, mp_srcptr np, mp_size_t nn,
if (qp) if (qp)
qp[nn] = q; qp[nn] = q;
} }
if ((inv->shift > 0) && (tp != qp)) if (tn)
gmp_free (tp); gmp_free_limbs (tp, tn);
return r >> inv->shift; return r >> inv->shift;
} }
@ -1125,13 +1160,13 @@ mpn_div_qr (mp_ptr qp, mp_ptr np, mp_size_t nn, mp_srcptr dp, mp_size_t dn)
mpn_div_qr_invert (&inv, dp, dn); mpn_div_qr_invert (&inv, dp, dn);
if (dn > 2 && inv.shift > 0) if (dn > 2 && inv.shift > 0)
{ {
tp = gmp_xalloc_limbs (dn); tp = gmp_alloc_limbs (dn);
gmp_assert_nocarry (mpn_lshift (tp, dp, dn, inv.shift)); gmp_assert_nocarry (mpn_lshift (tp, dp, dn, inv.shift));
dp = tp; dp = tp;
} }
mpn_div_qr_preinv (qp, np, nn, dp, dn, &inv); mpn_div_qr_preinv (qp, np, nn, dp, dn, &inv);
if (tp) if (tp)
gmp_free (tp); gmp_free_limbs (tp, dn);
} }
@ -1307,29 +1342,26 @@ mpn_set_str_bits (mp_ptr rp, const unsigned char *sp, size_t sn,
unsigned bits) unsigned bits)
{ {
mp_size_t rn; mp_size_t rn;
size_t j; mp_limb_t limb;
unsigned shift; unsigned shift;
for (j = sn, rn = 0, shift = 0; j-- > 0; ) for (limb = 0, rn = 0, shift = 0; sn-- > 0; )
{ {
if (shift == 0) limb |= (mp_limb_t) sp[sn] << shift;
shift += bits;
if (shift >= GMP_LIMB_BITS)
{ {
rp[rn++] = sp[j]; shift -= GMP_LIMB_BITS;
shift += bits; rp[rn++] = limb;
} /* Next line is correct also if shift == 0,
else bits == 8, and mp_limb_t == unsigned char. */
{ limb = (unsigned int) sp[sn] >> (bits - shift);
rp[rn-1] |= (mp_limb_t) sp[j] << shift;
shift += bits;
if (shift >= GMP_LIMB_BITS)
{
shift -= GMP_LIMB_BITS;
if (shift > 0)
rp[rn++] = (mp_limb_t) sp[j] >> (bits - shift);
}
} }
} }
rn = mpn_normalized_size (rp, rn); if (limb != 0)
rp[rn++] = limb;
else
rn = mpn_normalized_size (rp, rn);
return rn; return rn;
} }
@ -1417,14 +1449,14 @@ mpz_init2 (mpz_t r, mp_bitcnt_t bits)
r->_mp_alloc = rn; r->_mp_alloc = rn;
r->_mp_size = 0; r->_mp_size = 0;
r->_mp_d = gmp_xalloc_limbs (rn); r->_mp_d = gmp_alloc_limbs (rn);
} }
void void
mpz_clear (mpz_t r) mpz_clear (mpz_t r)
{ {
if (r->_mp_alloc) if (r->_mp_alloc)
gmp_free (r->_mp_d); gmp_free_limbs (r->_mp_d, r->_mp_alloc);
} }
static mp_ptr static mp_ptr
@ -1433,9 +1465,9 @@ mpz_realloc (mpz_t r, mp_size_t size)
size = GMP_MAX (size, 1); size = GMP_MAX (size, 1);
if (r->_mp_alloc) if (r->_mp_alloc)
r->_mp_d = gmp_xrealloc_limbs (r->_mp_d, size); r->_mp_d = gmp_realloc_limbs (r->_mp_d, r->_mp_alloc, size);
else else
r->_mp_d = gmp_xalloc_limbs (size); r->_mp_d = gmp_alloc_limbs (size);
r->_mp_alloc = size; r->_mp_alloc = size;
if (GMP_ABS (r->_mp_size) > size) if (GMP_ABS (r->_mp_size) > size)
@ -1530,8 +1562,7 @@ mpz_init_set (mpz_t r, const mpz_t x)
int int
mpz_fits_slong_p (const mpz_t u) mpz_fits_slong_p (const mpz_t u)
{ {
return (LONG_MAX + LONG_MIN == 0 || mpz_cmp_ui (u, LONG_MAX) <= 0) && return mpz_cmp_si (u, LONG_MAX) <= 0 && mpz_cmp_si (u, LONG_MIN) >= 0;
mpz_cmpabs_ui (u, GMP_NEG_CAST (unsigned long int, LONG_MIN)) <= 0;
} }
static int static int
@ -1554,6 +1585,30 @@ mpz_fits_ulong_p (const mpz_t u)
return us >= 0 && mpn_absfits_ulong_p (u->_mp_d, us); return us >= 0 && mpn_absfits_ulong_p (u->_mp_d, us);
} }
int
mpz_fits_sint_p (const mpz_t u)
{
return mpz_cmp_si (u, INT_MAX) <= 0 && mpz_cmp_si (u, INT_MIN) >= 0;
}
int
mpz_fits_uint_p (const mpz_t u)
{
return u->_mp_size >= 0 && mpz_cmpabs_ui (u, UINT_MAX) <= 0;
}
int
mpz_fits_sshort_p (const mpz_t u)
{
return mpz_cmp_si (u, SHRT_MAX) <= 0 && mpz_cmp_si (u, SHRT_MIN) >= 0;
}
int
mpz_fits_ushort_p (const mpz_t u)
{
return u->_mp_size >= 0 && mpz_cmpabs_ui (u, USHRT_MAX) <= 0;
}
long int long int
mpz_get_si (const mpz_t u) mpz_get_si (const mpz_t u)
{ {
@ -1891,9 +1946,8 @@ mpz_neg (mpz_t r, const mpz_t u)
void void
mpz_swap (mpz_t u, mpz_t v) mpz_swap (mpz_t u, mpz_t v)
{ {
MP_SIZE_T_SWAP (u->_mp_size, v->_mp_size);
MP_SIZE_T_SWAP (u->_mp_alloc, v->_mp_alloc); MP_SIZE_T_SWAP (u->_mp_alloc, v->_mp_alloc);
MP_PTR_SWAP (u->_mp_d, v->_mp_d); MPN_PTR_SWAP (u->_mp_d, u->_mp_size, v->_mp_d, v->_mp_size);
} }
@ -2676,7 +2730,7 @@ mpz_make_odd (mpz_t r)
assert (r->_mp_size > 0); assert (r->_mp_size > 0);
/* Count trailing zeros, equivalent to mpn_scan1, because we know that there is a 1 */ /* Count trailing zeros, equivalent to mpn_scan1, because we know that there is a 1 */
shift = mpn_common_scan (r->_mp_d[0], 0, r->_mp_d, 0, 0); shift = mpn_scan1 (r->_mp_d, 0);
mpz_tdiv_q_2exp (r, r, shift); mpz_tdiv_q_2exp (r, r, shift);
return shift; return shift;
@ -2733,9 +2787,13 @@ mpz_gcd (mpz_t g, const mpz_t u, const mpz_t v)
if (tv->_mp_size == 1) if (tv->_mp_size == 1)
{ {
mp_limb_t vl = tv->_mp_d[0]; mp_limb_t *gp;
mp_limb_t ul = mpz_tdiv_ui (tu, vl);
mpz_set_ui (g, mpn_gcd_11 (ul, vl)); mpz_tdiv_r (tu, tu, tv);
gp = MPZ_REALLOC (g, 1); /* gp = mpz_limbs_modify (g, 1); */
*gp = mpn_gcd_11 (tu->_mp_d[0], tv->_mp_d[0]);
g->_mp_size = *gp != 0; /* mpz_limbs_finish (g, 1); */
break; break;
} }
mpz_sub (tu, tu, tv); mpz_sub (tu, tu, tv);
@ -2824,7 +2882,6 @@ mpz_gcdext (mpz_t g, mpz_t s, mpz_t t, const mpz_t u, const mpz_t v)
* s0 = 0, s1 = 2^vz * s0 = 0, s1 = 2^vz
*/ */
mpz_setbit (t0, uz);
mpz_tdiv_qr (t1, tu, tu, tv); mpz_tdiv_qr (t1, tu, tu, tv);
mpz_mul_2exp (t1, t1, uz); mpz_mul_2exp (t1, t1, uz);
@ -2835,8 +2892,7 @@ mpz_gcdext (mpz_t g, mpz_t s, mpz_t t, const mpz_t u, const mpz_t v)
{ {
mp_bitcnt_t shift; mp_bitcnt_t shift;
shift = mpz_make_odd (tu); shift = mpz_make_odd (tu);
mpz_mul_2exp (t0, t0, shift); mpz_setbit (t0, uz + shift);
mpz_mul_2exp (s0, s0, shift);
power += shift; power += shift;
for (;;) for (;;)
@ -2874,6 +2930,8 @@ mpz_gcdext (mpz_t g, mpz_t s, mpz_t t, const mpz_t u, const mpz_t v)
power += shift; power += shift;
} }
} }
else
mpz_setbit (t0, uz);
/* Now tv = odd part of gcd, and -s0 and t0 are corresponding /* Now tv = odd part of gcd, and -s0 and t0 are corresponding
cofactors. */ cofactors. */
@ -3048,7 +3106,7 @@ mpz_powm (mpz_t r, const mpz_t b, const mpz_t e, const mpz_t m)
if (en == 0) if (en == 0)
{ {
mpz_set_ui (r, 1); mpz_set_ui (r, mpz_cmpabs_ui (m, 1));
return; return;
} }
@ -3062,7 +3120,7 @@ mpz_powm (mpz_t r, const mpz_t b, const mpz_t e, const mpz_t m)
one, using a *normalized* m. */ one, using a *normalized* m. */
minv.shift = 0; minv.shift = 0;
tp = gmp_xalloc_limbs (mn); tp = gmp_alloc_limbs (mn);
gmp_assert_nocarry (mpn_lshift (tp, mp, mn, shift)); gmp_assert_nocarry (mpn_lshift (tp, mp, mn, shift));
mp = tp; mp = tp;
} }
@ -3128,7 +3186,7 @@ mpz_powm (mpz_t r, const mpz_t b, const mpz_t e, const mpz_t m)
tr->_mp_size = mpn_normalized_size (tr->_mp_d, mn); tr->_mp_size = mpn_normalized_size (tr->_mp_d, mn);
} }
if (tp) if (tp)
gmp_free (tp); gmp_free_limbs (tp, mn);
mpz_swap (r, tr); mpz_swap (r, tr);
mpz_clear (tr); mpz_clear (tr);
@ -3150,6 +3208,7 @@ void
mpz_rootrem (mpz_t x, mpz_t r, const mpz_t y, unsigned long z) mpz_rootrem (mpz_t x, mpz_t r, const mpz_t y, unsigned long z)
{ {
int sgn; int sgn;
mp_bitcnt_t bc;
mpz_t t, u; mpz_t t, u;
sgn = y->_mp_size < 0; sgn = y->_mp_size < 0;
@ -3168,7 +3227,8 @@ mpz_rootrem (mpz_t x, mpz_t r, const mpz_t y, unsigned long z)
mpz_init (u); mpz_init (u);
mpz_init (t); mpz_init (t);
mpz_setbit (t, mpz_sizeinbase (y, 2) / z + 1); bc = (mpz_sizeinbase (y, 2) - 1) / z + 1;
mpz_setbit (t, bc);
if (z == 2) /* simplify sqrt loop: z-1 == 1 */ if (z == 2) /* simplify sqrt loop: z-1 == 1 */
do { do {
@ -3339,13 +3399,15 @@ gmp_jacobi_coprime (mp_limb_t a, mp_limb_t b)
gmp_ctz(c, a); gmp_ctz(c, a);
a >>= 1; a >>= 1;
do for (;;)
{ {
a >>= c; a >>= c;
/* (2/b) = -1 if b = 3 or 5 mod 8 */ /* (2/b) = -1 if b = 3 or 5 mod 8 */
bit ^= c & (b ^ (b >> 1)); bit ^= c & (b ^ (b >> 1));
if (a < b) if (a < b)
{ {
if (a == 0)
return bit & 1 ? -1 : 1;
bit ^= a & b; bit ^= a & b;
a = b - a; a = b - a;
b -= a; b -= a;
@ -3359,9 +3421,6 @@ gmp_jacobi_coprime (mp_limb_t a, mp_limb_t b)
gmp_ctz(c, a); gmp_ctz(c, a);
++c; ++c;
} }
while (b > 0);
return bit & 1 ? -1 : 1;
} }
static void static void
@ -3407,7 +3466,7 @@ gmp_lucas_mod (mpz_t V, mpz_t Qk, long Q,
gmp_lucas_step_k_2k (V, Qk, n); gmp_lucas_step_k_2k (V, Qk, n);
/* A step k->k+1 is performed if the bit in $n$ is 1 */ /* A step k->k+1 is performed if the bit in $n$ is 1 */
/* mpz_tstbit(n,bs) or the the bit is 0 in $n$ but */ /* mpz_tstbit(n,bs) or the bit is 0 in $n$ but */
/* should be 1 in $n+1$ (bs == b0) */ /* should be 1 in $n+1$ (bs == b0) */
if (b0 == bs || mpz_tstbit (n, bs)) if (b0 == bs || mpz_tstbit (n, bs))
{ {
@ -3476,7 +3535,8 @@ gmp_stronglucas (const mpz_t x, mpz_t Qk)
mpz_init (V); mpz_init (V);
/* n-(D/n) = n+1 = d*2^{b0}, with d = (n>>b0) | 1 */ /* n-(D/n) = n+1 = d*2^{b0}, with d = (n>>b0) | 1 */
b0 = mpz_scan0 (n, 0); b0 = mpn_common_scan (~ n->_mp_d[0], 0, n->_mp_d, n->_mp_size, GMP_LIMB_MAX);
/* b0 = mpz_scan0 (n, 0); */
/* D= P^2 - 4Q; P = 1; Q = (1-D)/4 */ /* D= P^2 - 4Q; P = 1; Q = (1-D)/4 */
Q = (D & 2) ? (long) (D >> 2) + 1 : -(long) (D >> 2); Q = (D & 2) ? (long) (D >> 2) + 1 : -(long) (D >> 2);
@ -3508,11 +3568,6 @@ gmp_millerrabin (const mpz_t n, const mpz_t nm1, mpz_t y,
mpz_powm_ui (y, y, 2, n); mpz_powm_ui (y, y, 2, n);
if (mpz_cmp (y, nm1) == 0) if (mpz_cmp (y, nm1) == 0)
return 1; return 1;
/* y == 1 means that the previous y was a non-trivial square root
of 1 (mod n). y == 0 means that n is a power of the base.
In either case, n is not prime. */
if (mpz_cmp_ui (y, 1) <= 0)
return 0;
} }
return 0; return 0;
} }
@ -3558,7 +3613,8 @@ mpz_probab_prime_p (const mpz_t n, int reps)
/* Find q and k, where q is odd and n = 1 + 2**k * q. */ /* Find q and k, where q is odd and n = 1 + 2**k * q. */
mpz_abs (nm1, n); mpz_abs (nm1, n);
nm1->_mp_d[0] -= 1; nm1->_mp_d[0] -= 1;
k = mpz_scan1 (nm1, 0); /* Count trailing zeros, equivalent to mpn_scan1, because we know that there is a 1 */
k = mpn_scan1 (nm1->_mp_d, 0);
mpz_tdiv_q_2exp (q, nm1, k); mpz_tdiv_q_2exp (q, nm1, k);
/* BPSW test */ /* BPSW test */
@ -4133,7 +4189,7 @@ mpz_scan0 (const mpz_t u, mp_bitcnt_t starting_bit)
size_t size_t
mpz_sizeinbase (const mpz_t u, int base) mpz_sizeinbase (const mpz_t u, int base)
{ {
mp_size_t un; mp_size_t un, tn;
mp_srcptr up; mp_srcptr up;
mp_ptr tp; mp_ptr tp;
mp_bitcnt_t bits; mp_bitcnt_t bits;
@ -4166,20 +4222,21 @@ mpz_sizeinbase (const mpz_t u, int base)
10. */ 10. */
} }
tp = gmp_xalloc_limbs (un); tp = gmp_alloc_limbs (un);
mpn_copyi (tp, up, un); mpn_copyi (tp, up, un);
mpn_div_qr_1_invert (&bi, base); mpn_div_qr_1_invert (&bi, base);
tn = un;
ndigits = 0; ndigits = 0;
do do
{ {
ndigits++; ndigits++;
mpn_div_qr_1_preinv (tp, tp, un, &bi); mpn_div_qr_1_preinv (tp, tp, tn, &bi);
un -= (tp[un-1] == 0); tn -= (tp[tn-1] == 0);
} }
while (un > 0); while (tn > 0);
gmp_free (tp); gmp_free_limbs (tp, un);
return ndigits; return ndigits;
} }
@ -4189,7 +4246,7 @@ mpz_get_str (char *sp, int base, const mpz_t u)
unsigned bits; unsigned bits;
const char *digits; const char *digits;
mp_size_t un; mp_size_t un;
size_t i, sn; size_t i, sn, osn;
digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
if (base > 1) if (base > 1)
@ -4210,15 +4267,19 @@ mpz_get_str (char *sp, int base, const mpz_t u)
sn = 1 + mpz_sizeinbase (u, base); sn = 1 + mpz_sizeinbase (u, base);
if (!sp) if (!sp)
sp = (char *) gmp_xalloc (1 + sn); {
osn = 1 + sn;
sp = (char *) gmp_alloc (osn);
}
else
osn = 0;
un = GMP_ABS (u->_mp_size); un = GMP_ABS (u->_mp_size);
if (un == 0) if (un == 0)
{ {
sp[0] = '0'; sp[0] = '0';
sp[1] = '\0'; sn = 1;
return sp; goto ret;
} }
i = 0; i = 0;
@ -4237,17 +4298,20 @@ mpz_get_str (char *sp, int base, const mpz_t u)
mp_ptr tp; mp_ptr tp;
mpn_get_base_info (&info, base); mpn_get_base_info (&info, base);
tp = gmp_xalloc_limbs (un); tp = gmp_alloc_limbs (un);
mpn_copyi (tp, u->_mp_d, un); mpn_copyi (tp, u->_mp_d, un);
sn = i + mpn_get_str_other ((unsigned char *) sp + i, base, &info, tp, un); sn = i + mpn_get_str_other ((unsigned char *) sp + i, base, &info, tp, un);
gmp_free (tp); gmp_free_limbs (tp, un);
} }
for (; i < sn; i++) for (; i < sn; i++)
sp[i] = digits[(unsigned char) sp[i]]; sp[i] = digits[(unsigned char) sp[i]];
ret:
sp[sn] = '\0'; sp[sn] = '\0';
if (osn && osn != sn + 1)
sp = (char*) gmp_realloc (sp, osn, sn + 1);
return sp; return sp;
} }
@ -4257,7 +4321,7 @@ mpz_set_str (mpz_t r, const char *sp, int base)
unsigned bits, value_of_a; unsigned bits, value_of_a;
mp_size_t rn, alloc; mp_size_t rn, alloc;
mp_ptr rp; mp_ptr rp;
size_t dn; size_t dn, sn;
int sign; int sign;
unsigned char *dp; unsigned char *dp;
@ -4295,7 +4359,8 @@ mpz_set_str (mpz_t r, const char *sp, int base)
r->_mp_size = 0; r->_mp_size = 0;
return -1; return -1;
} }
dp = (unsigned char *) gmp_xalloc (strlen (sp)); sn = strlen(sp);
dp = (unsigned char *) gmp_alloc (sn);
value_of_a = (base > 36) ? 36 : 10; value_of_a = (base > 36) ? 36 : 10;
for (dn = 0; *sp; sp++) for (dn = 0; *sp; sp++)
@ -4315,7 +4380,7 @@ mpz_set_str (mpz_t r, const char *sp, int base)
if (digit >= (unsigned) base) if (digit >= (unsigned) base)
{ {
gmp_free (dp); gmp_free (dp, sn);
r->_mp_size = 0; r->_mp_size = 0;
return -1; return -1;
} }
@ -4325,7 +4390,7 @@ mpz_set_str (mpz_t r, const char *sp, int base)
if (!dn) if (!dn)
{ {
gmp_free (dp); gmp_free (dp, sn);
r->_mp_size = 0; r->_mp_size = 0;
return -1; return -1;
} }
@ -4349,7 +4414,7 @@ mpz_set_str (mpz_t r, const char *sp, int base)
rn -= rp[rn-1] == 0; rn -= rp[rn-1] == 0;
} }
assert (rn <= alloc); assert (rn <= alloc);
gmp_free (dp); gmp_free (dp, sn);
r->_mp_size = sign ? - rn : rn; r->_mp_size = sign ? - rn : rn;
@ -4367,13 +4432,15 @@ size_t
mpz_out_str (FILE *stream, int base, const mpz_t x) mpz_out_str (FILE *stream, int base, const mpz_t x)
{ {
char *str; char *str;
size_t len; size_t len, n;
str = mpz_get_str (NULL, base, x); str = mpz_get_str (NULL, base, x);
if (!str)
return 0;
len = strlen (str); len = strlen (str);
len = fwrite (str, 1, len, stream); n = fwrite (str, 1, len, stream);
gmp_free (str); gmp_free (str, len + 1);
return len; return n;
} }
@ -4462,7 +4529,7 @@ mpz_export (void *r, size_t *countp, int order, size_t size, int endian,
mp_size_t un; mp_size_t un;
if (nails != 0) if (nails != 0)
gmp_die ("mpz_import: Nails not supported."); gmp_die ("mpz_export: Nails not supported.");
assert (order == 1 || order == -1); assert (order == 1 || order == -1);
assert (endian >= -1 && endian <= 1); assert (endian >= -1 && endian <= 1);
@ -4477,7 +4544,7 @@ mpz_export (void *r, size_t *countp, int order, size_t size, int endian,
ptrdiff_t word_step; ptrdiff_t word_step;
/* The current (partial) limb. */ /* The current (partial) limb. */
mp_limb_t limb; mp_limb_t limb;
/* The number of bytes left to to in this limb. */ /* The number of bytes left to do in this limb. */
size_t bytes; size_t bytes;
/* The index where the limb was read. */ /* The index where the limb was read. */
mp_size_t i; mp_size_t i;
@ -4501,7 +4568,7 @@ mpz_export (void *r, size_t *countp, int order, size_t size, int endian,
count = (k + (un-1) * sizeof (mp_limb_t) + size - 1) / size; count = (k + (un-1) * sizeof (mp_limb_t) + size - 1) / size;
if (!r) if (!r)
r = gmp_xalloc (count * size); r = gmp_alloc (count * size);
if (endian == 0) if (endian == 0)
endian = gmp_detect_endian (); endian = gmp_detect_endian ();

35
lib/gmp/mini-gmp.h
View File

@ -1,21 +1,32 @@
/* mini-gmp, a minimalistic implementation of a GNU GMP subset. /* mini-gmp, a minimalistic implementation of a GNU GMP subset.
Copyright 2011-2015, 2017, 2019 Free Software Foundation, Inc. Copyright 2011-2015, 2017, 2019-2021 Free Software Foundation, Inc.
This file is part of the GNU MP Library. This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify The GNU MP 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 it under the terms of either:
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version. * the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any
later version.
or both in parallel, as here.
The GNU MP Library is distributed in the hope that it will be useful, but 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 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
License for more details. for more details.
You should have received a copy of the GNU Lesser General Public License You should have received copies of the GNU General Public License and the
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ GNU Lesser General Public License along with the GNU MP Library. If not,
see https://www.gnu.org/licenses/. */
/* About mini-gmp: This is a minimal implementation of a subset of the /* About mini-gmp: This is a minimal implementation of a subset of the
GMP interface. It is intended for inclusion into applications which GMP interface. It is intended for inclusion into applications which
@ -233,6 +244,10 @@ mp_bitcnt_t mpz_scan1 (const mpz_t, mp_bitcnt_t);
int mpz_fits_slong_p (const mpz_t); int mpz_fits_slong_p (const mpz_t);
int mpz_fits_ulong_p (const mpz_t); int mpz_fits_ulong_p (const mpz_t);
int mpz_fits_sint_p (const mpz_t);
int mpz_fits_uint_p (const mpz_t);
int mpz_fits_sshort_p (const mpz_t);
int mpz_fits_ushort_p (const mpz_t);
long int mpz_get_si (const mpz_t); long int mpz_get_si (const mpz_t);
unsigned long int mpz_get_ui (const mpz_t); unsigned long int mpz_get_ui (const mpz_t);
double mpz_get_d (const mpz_t); double mpz_get_d (const mpz_t);
@ -280,7 +295,9 @@ int mpz_init_set_str (mpz_t, const char *, int);
|| defined (_MSL_STDIO_H) /* Metrowerks */ \ || defined (_MSL_STDIO_H) /* Metrowerks */ \
|| defined (_STDIO_H_INCLUDED) /* QNX4 */ \ || defined (_STDIO_H_INCLUDED) /* QNX4 */ \
|| defined (_ISO_STDIO_ISO_H) /* Sun C++ */ \ || defined (_ISO_STDIO_ISO_H) /* Sun C++ */ \
|| defined (__STDIO_LOADED) /* VMS */ || defined (__STDIO_LOADED) /* VMS */ \
|| defined (_STDIO) /* HPE NonStop */ \
|| defined (__DEFINED_FILE) /* musl */
size_t mpz_out_str (FILE *, int, const mpz_t); size_t mpz_out_str (FILE *, int, const mpz_t);
#endif #endif