io.c
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上传日期:2022-08-06
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- /* Test conversion and I/O using mpz_out_str and mpz_inp_str.
- Copyright 1993, 1994, 1996, 2000, 2001 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/. */
- #include "config.h"
- #include <stdio.h>
- #include <stdlib.h>
- #if HAVE_UNISTD_H
- #include <unistd.h> /* for unlink */
- #endif
- #include "gmp.h"
- #include "gmp-impl.h"
- #include "tests.h"
- #define FILENAME "io.tmp"
- void
- debug_mp (mpz_t x, int base)
- {
- mpz_out_str (stdout, base, x); fputc ('n', stdout);
- }
- int
- main (int argc, char **argv)
- {
- mpz_t op1, op2;
- mp_size_t size;
- int i;
- int reps = 10000;
- FILE *fp;
- int base;
- gmp_randstate_ptr rands;
- mpz_t bs;
- unsigned long bsi, size_range;
- size_t nread;
- tests_start ();
- rands = RANDS;
- mpz_init (bs);
- if (argc == 2)
- reps = atoi (argv[1]);
- mpz_init (op1);
- mpz_init (op2);
- fp = fopen (FILENAME, "w+");
- for (i = 0; i < reps; i++)
- {
- mpz_urandomb (bs, rands, 32);
- size_range = mpz_get_ui (bs) % 10 + 2;
- mpz_urandomb (bs, rands, size_range);
- size = mpz_get_ui (bs);
- mpz_rrandomb (op1, rands, size);
- mpz_urandomb (bs, rands, 1);
- bsi = mpz_get_ui (bs);
- if ((bsi & 1) != 0)
- mpz_neg (op1, op1);
- mpz_urandomb (bs, rands, 16);
- bsi = mpz_get_ui (bs);
- base = bsi % 36 + 1;
- if (base == 1)
- base = 0;
- rewind (fp);
- if (mpz_out_str (fp, base, op1) == 0
- || putc (' ', fp) == EOF
- || fflush (fp) != 0)
- {
- printf ("mpz_out_str write errorn");
- abort ();
- }
- rewind (fp);
- nread = mpz_inp_str (op2, fp, base);
- if (nread == 0)
- {
- if (ferror (fp))
- printf ("mpz_inp_str stream read errorn");
- else
- printf ("mpz_inp_str data conversion errorn");
- abort ();
- }
- if (nread != ftell(fp))
- {
- printf ("mpz_inp_str nread doesn't match ftelln");
- printf (" nread %lun", (unsigned long) nread);
- printf (" ftell %ldn", ftell(fp));
- abort ();
- }
- if (mpz_cmp (op1, op2))
- {
- printf ("ERRORn");
- printf ("op1 = "); debug_mp (op1, -16);
- printf ("op2 = "); debug_mp (op2, -16);
- printf ("base = %dn", base);
- abort ();
- }
- }
- fclose (fp);
- unlink (FILENAME);
- mpz_clear (bs);
- mpz_clear (op1);
- mpz_clear (op2);
- tests_end ();
- exit (0);
- }