--- /dev/null
+/* gen.c -- Generate pseudorandom numbers.
+
+Copyright 1999, 2000, 2002 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 Lesser General Public License as published by
+the Free Software Foundation; either version 3 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 Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
+
+/* Examples:
+
+ $ gen 10
+10 integers 0 <= X < 2^32 generated by mpz_urandomb()
+
+ $ gen -f mpf_urandomb 10
+10 real numbers 0 <= X < 1
+
+ $ gen -z 127 10
+10 integers 0 <= X < 2^127
+
+ $ gen -f mpf_urandomb -x .9,1 10
+10 real numbers 0 <= X < .9
+
+ $ gen -s 1 10
+10 integers, sequence seeded with 1
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+#include <time.h>
+#include <string.h>
+
+#if !HAVE_DECL_OPTARG
+extern char *optarg;
+extern int optind, opterr;
+#endif
+
+#include "gmp.h"
+#include "gmp-impl.h"
+
+int main (argc, argv)
+ int argc;
+ char *argv[];
+{
+ const char usage[] =
+ "usage: gen [-bhpq] [-a n] [-c a,c,m2exp] [-C a,c,m] [-f func] [-g alg] [-m n] [-s n] " \
+ "[-x f,t] [-z n] [n]\n" \
+ " n number of random numbers to generate\n" \
+ " -a n ASCII output in radix n (default, with n=10)\n" \
+ " -b binary output\n" \
+ " -c a,c,m2exp use supplied LC scheme\n" \
+ " -f func random function, one of\n" \
+ " mpz_urandomb (default), mpz_urandomm, mpf_urandomb, rand, random\n" \
+ " -g alg algorithm, one of mt (default), lc\n" \
+ " -h print this text and exit\n" \
+ " -m n maximum size of generated number plus 1 (0<= X < n) for mpz_urandomm\n" \
+ " -p print used seed on stderr\n" \
+ " -q quiet, no output\n" \
+ " -s n initial seed (default: output from time(3))\n" \
+ " -x f,t exclude all numbers f <= x <= t\n" \
+ " -z n size in bits of generated numbers (0<= X <2^n) (default 32)\n" \
+ "";
+
+ unsigned long int f;
+ unsigned long int n = 0;
+ unsigned long int seed;
+ unsigned long int m2exp = 0;
+ unsigned int size = 32;
+ int seed_from_user = 0;
+ int ascout = 1, binout = 0, printseed = 0;
+ int output_radix = 10;
+ int lc_scheme_from_user = 0;
+ int quiet_flag = 0;
+ mpz_t z_seed;
+ mpz_t z1;
+ mpf_t f1;
+ gmp_randstate_t rstate;
+ int c, i;
+ double drand;
+ long lrand;
+ int do_exclude = 0;
+ mpf_t f_xf, f_xt; /* numbers to exclude from sequence */
+ char *str_xf, *str_xt; /* numbers to exclude from sequence */
+ char *str_a, *str_adder, *str_m;
+ mpz_t z_a, z_m, z_mmax;
+ unsigned long int ul_adder;
+
+ enum
+ {
+ RFUNC_mpz_urandomb = 0,
+ RFUNC_mpz_urandomm,
+ RFUNC_mpf_urandomb,
+ RFUNC_rand,
+ RFUNC_random,
+ } rfunc = RFUNC_mpz_urandomb;
+ char *rfunc_str[] = { "mpz_urandomb", "mpz_urandomm", "mpf_urandomb",
+ "rand", "random" };
+ enum
+ {
+ RNG_MT = 0,
+ RNG_LC
+ };
+ gmp_randalg_t ralg = RNG_MT;
+ /* Texts for the algorithms. The index of each must match the
+ corresponding algorithm in the enum above. */
+ char *ralg_str[] = { "mt", "lc" };
+
+ mpf_init (f_xf);
+ mpf_init (f_xt);
+ mpf_init (f1);
+ mpz_init (z1);
+ mpz_init (z_seed);
+ mpz_init_set_ui (z_mmax, 0);
+
+
+ while ((c = getopt (argc, argv, "a:bc:f:g:hm:n:pqs:z:x:")) != -1)
+ switch (c)
+ {
+ case 'a':
+ ascout = 1;
+ binout = 0;
+ output_radix = atoi (optarg);
+ break;
+
+ case 'b':
+ ascout = 0;
+ binout = 1;
+ break;
+
+ case 'c': /* User supplied LC scheme: a,c,m2exp */
+ if (NULL == (str_a = strtok (optarg, ","))
+ || NULL == (str_adder = strtok (NULL, ","))
+ || NULL == (str_m = strtok (NULL, ",")))
+ {
+ fprintf (stderr, "gen: bad LC scheme parameters: %s\n", optarg);
+ exit (1);
+ }
+#ifdef HAVE_STRTOUL
+ ul_adder = strtoul (str_adder, NULL, 0);
+#elif HAVE_STRTOL
+ ul_adder = (unsigned long int) strtol (str_adder, NULL, 0);
+#else
+ ul_adder = (unsigned long int) atoi (str_adder);
+#endif
+
+ if (mpz_init_set_str (z_a, str_a, 0))
+ {
+ fprintf (stderr, "gen: bad LC scheme parameter `a': %s\n", str_a);
+ exit (1);
+ }
+ if (ULONG_MAX == ul_adder)
+ {
+ fprintf (stderr, "gen: bad LC scheme parameter `c': %s\n",
+ str_adder);
+ exit (1);
+ }
+ m2exp = atol (str_m);
+
+ lc_scheme_from_user = 1;
+ break;
+
+
+ case 'f':
+ rfunc = -1;
+ for (f = 0; f < sizeof (rfunc_str) / sizeof (*rfunc_str); f++)
+ if (!strcmp (optarg, rfunc_str[f]))
+ {
+ rfunc = f;
+ break;
+ }
+ if (rfunc == -1)
+ {
+ fputs (usage, stderr);
+ exit (1);
+ }
+ break;
+
+ case 'g': /* algorithm */
+ ralg = -1;
+ for (f = 0; f < sizeof (ralg_str) / sizeof (*ralg_str); f++)
+ if (!strcmp (optarg, ralg_str[f]))
+ {
+ ralg = f;
+ break;
+ }
+ if (ralg == -1)
+ {
+ fputs (usage, stderr);
+ exit (1);
+ }
+ break;
+
+ case 'm': /* max for mpz_urandomm() */
+ if (mpz_set_str (z_mmax, optarg, 0))
+ {
+ fprintf (stderr, "gen: bad max value: %s\n", optarg);
+ exit (1);
+ }
+ break;
+
+ case 'p': /* print seed on stderr */
+ printseed = 1;
+ break;
+
+ case 'q': /* quiet */
+ quiet_flag = 1;
+ break;
+
+ case 's': /* user provided seed */
+ if (mpz_set_str (z_seed, optarg, 0))
+ {
+ fprintf (stderr, "gen: bad seed argument %s\n", optarg);
+ exit (1);
+ }
+ seed_from_user = 1;
+ break;
+
+ case 'z':
+ size = atoi (optarg);
+ if (size < 1)
+ {
+ fprintf (stderr, "gen: bad size argument (-z %u)\n", size);
+ exit (1);
+ }
+ break;
+
+ case 'x': /* Exclude. from,to */
+ str_xf = optarg;
+ str_xt = strchr (optarg, ',');
+ if (NULL == str_xt)
+ {
+ fprintf (stderr, "gen: bad exclusion parameters: %s\n", optarg);
+ exit (1);
+ }
+ *str_xt++ = '\0';
+ do_exclude = 1;
+ break;
+
+ case 'h':
+ case '?':
+ default:
+ fputs (usage, stderr);
+ exit (1);
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (! seed_from_user)
+ mpz_set_ui (z_seed, (unsigned long int) time (NULL));
+ seed = mpz_get_ui (z_seed);
+ if (printseed)
+ {
+ fprintf (stderr, "gen: seed used: ");
+ mpz_out_str (stderr, output_radix, z_seed);
+ fprintf (stderr, "\n");
+ }
+
+ mpf_set_prec (f1, size);
+
+ /* init random state and plant seed */
+ switch (rfunc)
+ {
+ case RFUNC_mpf_urandomb:
+#if 0
+ /* Don't init a too small generator. */
+ size = PREC (f1) * BITS_PER_MP_LIMB;
+ /* Fall through. */
+#endif
+ case RFUNC_mpz_urandomb:
+ case RFUNC_mpz_urandomm:
+ switch (ralg)
+ {
+ case RNG_MT:
+ gmp_randinit_mt (rstate);
+ break;
+
+ case RNG_LC:
+ if (! lc_scheme_from_user)
+ gmp_randinit_lc_2exp_size (rstate, MIN (128, size));
+ else
+ gmp_randinit_lc_2exp (rstate, z_a, ul_adder, m2exp);
+ break;
+
+ default:
+ fprintf (stderr, "gen: unsupported algorithm\n");
+ exit (1);
+ }
+
+ gmp_randseed (rstate, z_seed);
+ break;
+
+ case RFUNC_rand:
+ srand (seed);
+ break;
+
+ case RFUNC_random:
+#ifdef __FreeBSD__ /* FIXME */
+ if (seed_from_user)
+ srandom (seed);
+ else
+ srandomdev ();
+#else
+ fprintf (stderr, "gen: unsupported algorithm\n");
+#endif
+ break;
+
+ default:
+ fprintf (stderr, "gen: random function not implemented\n");
+ exit (1);
+ }
+
+ /* set up excludes */
+ if (do_exclude)
+ switch (rfunc)
+ {
+ case RFUNC_mpf_urandomb:
+
+ if (mpf_set_str (f_xf, str_xf, 10) ||
+ mpf_set_str (f_xt, str_xt, 10))
+ {
+ fprintf (stderr, "gen: bad exclusion-from (\"%s\") " \
+ "or exclusion-to (\"%s\") string. no exclusion done.\n",
+ str_xf, str_xt);
+ do_exclude = 0;
+ }
+ break;
+
+ default:
+ fprintf (stderr, "gen: exclusion not implemented for chosen " \
+ "randomization function. all numbers included in sequence.\n");
+ }
+
+ /* generate and print */
+ if (argc > 0)
+ {
+#if HAVE_STRTOUL
+ n = strtoul (argv[0], (char **) NULL, 10);
+#elif HAVE_STRTOL
+ n = (unsigned long int) strtol (argv[0], (char **) NULL, 10);
+#else
+ n = (unsigned long int) atoi (argv[0]);
+#endif
+ }
+
+ for (f = 0; n == 0 || f < n; f++)
+ {
+ switch (rfunc)
+ {
+ case RFUNC_mpz_urandomb:
+ mpz_urandomb (z1, rstate, size);
+ if (quiet_flag)
+ break;
+ if (binout)
+ {
+ /*fwrite ((unsigned int *) z1->_mp_d, 4, 1, stdout);*/
+ fprintf (stderr, "gen: binary output for mpz_urandom* is broken\n");
+ exit (1);
+ }
+ else
+ {
+ mpz_out_str (stdout, output_radix, z1);
+ puts ("");
+ }
+ break;
+
+ case RFUNC_mpz_urandomm:
+ mpz_urandomm (z1, rstate, z_mmax);
+ if (quiet_flag)
+ break;
+ if (binout)
+ {
+ /*fwrite ((unsigned int *) z1->_mp_d, 4, 1, stdout);*/
+ fprintf (stderr, "gen: binary output for mpz_urandom* is broken\n");
+ exit (1);
+ }
+ else
+ {
+ mpz_out_str (stdout, output_radix, z1);
+ puts ("");
+ }
+ break;
+
+ case RFUNC_mpf_urandomb:
+ mpf_urandomb (f1, rstate, size);
+ if (do_exclude)
+ if (mpf_cmp (f1, f_xf) >= 0 && mpf_cmp (f1, f_xt) <= 0)
+ break;
+ if (quiet_flag)
+ break;
+ if (binout)
+ {
+ fprintf (stderr, "gen: binary output for floating point numbers "\
+ "not implemented\n");
+ exit (1);
+ }
+ else
+ {
+ mpf_out_str (stdout, output_radix, 0, f1);
+ puts ("");
+ }
+ break;
+
+ case RFUNC_rand:
+ i = rand ();
+#ifdef FLOAT_OUTPUT
+ if (i)
+ drand = (double) i / (double) RAND_MAX;
+ else
+ drand = 0.0;
+ if (quiet_flag)
+ break;
+ if (binout)
+ fwrite (&drand, sizeof (drand), 1, stdout);
+ else
+ printf ("%e\n", drand);
+#else
+ if (quiet_flag)
+ break;
+ if (binout)
+ fwrite (&i, sizeof (i), 1, stdout);
+ else
+ printf ("%d\n", i);
+#endif
+ break;
+
+ case RFUNC_random:
+ lrand = random ();
+ if (lrand)
+ drand = (double) lrand / (double) 0x7fffffff;
+ else
+ drand = 0;
+ if (quiet_flag)
+ break;
+ if (binout)
+ fwrite (&drand, sizeof (drand), 1, stdout);
+ else
+ printf ("%e\n", drand);
+ break;
+
+ default:
+ fprintf (stderr, "gen: random function not implemented\n");
+ exit (1);
+ }
+
+ }
+
+ /* clean up */
+ switch (rfunc)
+ {
+ case RFUNC_mpz_urandomb:
+ case RFUNC_mpf_urandomb:
+ gmp_randclear (rstate);
+ break;
+ default:
+ break;
+ }
+ mpf_clear (f1);
+ mpf_clear (f_xf);
+ mpf_clear (f_xt);
+ mpz_clear (z1);
+ mpz_clear (z_seed);
+
+ return 0;
+}
+
+static void *debug_dummyz = mpz_dump;
+static void *debug_dummyf = mpf_dump;
projects / msp430-gcc.git / blobdiff