-/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Geoffrey Keating <Geoff.Keating@anu.edu.au>, 1997.
The GNU C 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.
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <math.h>
-#include <stdlib/gmp.h>
+#include <gmp.h>
#include <string.h>
#include <limits.h>
#include <assert.h>
#define SZ (FRAC / mpbpl + 1)
typedef mp_limb_t mp1[SZ], mp2[SZ * 2];
-/* This string has 101 hex digits. */
-static const char exp1[102] = "2" /* point */
-"b7e151628aed2a6abf7158809cf4f3c762e7160f38b4da56a7"
-"84d9045190cfef324e7738926cfbe5f4bf8d8d8c31d763da07";
-static const char exp_m1[102] = "0" /* point */
-"5e2d58d8b3bcdf1abadec7829054f90dda9805aab56c773330"
-"24b9d0a507daedb16400bf472b4215b8245b669d90d27a5aea";
+#if BITS_PER_MP_LIMB == 64
+# define LIMB64(L, H) 0x ## H ## L
+#elif BITS_PER_MP_LIMB == 32
+# define LIMB64(L, H) 0x ## L, 0x ## H
+#else
+# error
+#endif
+
+/* Once upon a time these constants were generated to 400 bits.
+ We only need FRAC bits (128) at present, but we retain 384 bits
+ in the text Just In Case. */
+#define CONSTSZ(INT, F1, F2, F3, F4, F5, F6, F7, F8, F9, Fa, Fb, Fc) \
+ LIMB64(F4, F3), LIMB64(F2, F1), INT
+
+static const mp1 mp_exp1 = {
+ CONSTSZ (2, b7e15162, 8aed2a6a, bf715880, 9cf4f3c7, 62e7160f, 38b4da56,
+ a784d904, 5190cfef, 324e7738, 926cfbe5, f4bf8d8d, 8c31d763)
+};
-static const char hexdig[] = "0123456789abcdef";
+static const mp1 mp_log2 = {
+ CONSTSZ (0, b17217f7, d1cf79ab, c9e3b398, 03f2f6af, 40f34326, 7298b62d,
+ 8a0d175b, 8baafa2b, e7b87620, 6debac98, 559552fb, 4afa1b10)
+};
-void
+static void
print_mpn_fp (const mp_limb_t *x, unsigned int dp, unsigned int base)
{
+ static const char hexdig[16] = "0123456789abcdef";
unsigned int i;
mp1 tx;
}
}
-void
-read_mpn_hex(mp_limb_t *x, const char *str)
-{
- int i;
-
- memset (x, 0, sizeof (mp1));
- for (i = -1; i < 100 && i < FRAC / 4; ++i)
- x[(FRAC - i * 4 - 4) / mpbpl] |= ((strchr (hexdig, str[i + 1]) - hexdig)
- << (FRAC - i * 4 - 4) % mpbpl);
-}
-
-static mp_limb_t *get_log2(void) __attribute__((const));
-static mp_limb_t *
-get_log2(void)
-{
- static mp1 log2_m;
- static int log2_m_inited = 0;
- static const char log2[102] = "0" /* point */
- "b17217f7d1cf79abc9e3b39803f2f6af40f343267298b62d8a"
- "0d175b8baafa2be7b876206debac98559552fb4afa1b10ed2e";
-
- if (!log2_m_inited)
- {
- read_mpn_hex (log2_m, log2);
- log2_m_inited = 1;
- }
- return log2_m;
-}
-
/* Compute e^x. */
-void
+static void
exp_mpn (mp1 ex, mp1 x)
{
unsigned int n;
mp1 xp;
mp2 tmp;
- mp_limb_t chk, round;
+ mp_limb_t chk __attribute__ ((unused));
mp1 tol;
memset (xp, 0, sizeof (mp1));
mpn_mul_n (tmp, xp, x, SZ);
assert(tmp[SZ * 2 - 1] == 0);
if (n > 0)
- round = mpn_divmod_1 (xp, tmp + FRAC / mpbpl, SZ, n);
+ mpn_divmod_1 (xp, tmp + FRAC / mpbpl, SZ, n);
chk = mpn_add_n (ex, ex, xp, SZ);
assert (chk == 0);
++n;
}
/* Calculate 2^x. */
-void
+static void
exp2_mpn (mp1 ex, mp1 x)
{
mp2 tmp;
- mpn_mul_n (tmp, x, get_log2 (), SZ);
+ mpn_mul_n (tmp, x, mp_log2, SZ);
assert(tmp[SZ * 2 - 1] == 0);
exp_mpn (ex, tmp + FRAC / mpbpl);
}
return i * mpbpl + j;
}
-int
-main (void)
+static int
+do_test (void)
{
mp1 ex, x, xt, e2, e3;
int i;
memset (x, 0, sizeof (mp1));
x[FRAC / mpbpl] = (mp_limb_t)1 << FRAC % mpbpl;
exp_mpn (ex, x);
- read_mpn_hex (e2, exp1);
- if (mpn_cmp (ex, e2, SZ) >= 0)
- mpn_sub_n (e3, ex, e2, SZ);
+ if (mpn_cmp (ex, mp_exp1, SZ) >= 0)
+ mpn_sub_n (e3, ex, mp_exp1, SZ);
else
- mpn_sub_n (e3, e2, ex, SZ);
+ mpn_sub_n (e3, mp_exp1, ex, SZ);
printf ("%d failures; %d errors; error rate %0.2f%%\n", failures, errors,
errors * 100.0 / (double) (1 << N2));
return failures == 0 ? 0 : 1;
}
+
+#define TIMEOUT 300
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
projects / thirdparty / glibc.git / blobdiff