/* Test mpz_inp_raw and mpz_out_raw. Copyright 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 2.1 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; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #include #include #if HAVE_UNISTD_H #include #endif #include "mpir.h" #include "gmp-impl.h" #include "tests.h" #define FILENAME "t-io_raw.tmp" /* In the fopen, "b" selects binary mode on DOS systems, meaning no conversion of '\n' to and from CRLF. It's believed systems without such nonsense will simply ignore the "b", but in case that's not so a plain "w+" is attempted if "w+b" fails. */ FILE * fopen_wplusb_or_die (const char *filename) { FILE *fp; fp = fopen (filename, "w+b"); if (fp == NULL) fp = fopen (filename, "w+"); if (fp == NULL) { printf ("Cannot create file %s\n", filename); abort (); } return fp; } /* use 0x80 to check nothing bad happens with sign extension etc */ #define BYTEVAL(i) (((i) + 1) | 0x80) void check_in (void) { int i, j, zeros, neg, error = 0; mpz_t want, got; size_t want_ret, got_ret; mp_size_t size; FILE *fp; mpz_init (want); mpz_init (got); for (i = 0; i < 32; i++) { for (zeros = 0; zeros < 8; zeros++) { for (neg = 0; neg <= 1; neg++) { want_ret = i + zeros + 4; /* need this to get the twos complement right */ ASSERT_ALWAYS (sizeof (size) >= 4); size = i + zeros; if (neg) size = -size; fp = fopen_wplusb_or_die (FILENAME); for (j = 3; j >= 0; j--) ASSERT_ALWAYS (putc ((size >> (j*8)) & 0xFF, fp) != EOF); for (j = 0; j < zeros; j++) ASSERT_ALWAYS (putc ('\0', fp) != EOF); for (j = 0; j < i; j++) ASSERT_ALWAYS (putc (BYTEVAL (j), fp) != EOF); /* and some trailing garbage */ ASSERT_ALWAYS (putc ('x', fp) != EOF); ASSERT_ALWAYS (putc ('y', fp) != EOF); ASSERT_ALWAYS (putc ('z', fp) != EOF); ASSERT_ALWAYS (fflush (fp) == 0); rewind (fp); got_ret = mpz_inp_raw (got, fp); ASSERT_ALWAYS (! ferror(fp)); ASSERT_ALWAYS (fclose (fp) == 0); MPZ_CHECK_FORMAT (got); if (got_ret != want_ret) { printf ("check_in: return value wrong\n"); error = 1; } if (mpz_cmp (got, want) != 0) { printf ("check_in: result wrong\n"); error = 1; } if (error) { printf (" i=%d zeros=%d neg=%d\n", i, zeros, neg); printf (" got_ret %u\n", got_ret); printf (" want_ret %u\n", want_ret); mpz_trace (" got ", got); mpz_trace (" want ", want); abort (); } mpz_neg (want, want); } } mpz_mul_2exp (want, want, 8); mpz_add_ui (want, want, (unsigned long) BYTEVAL (i)); } mpz_clear (want); mpz_clear (got); } void check_out (void) { int i, j, neg, error = 0; mpz_t z; char want[256], got[256], *p; size_t want_len, got_ret, got_read; mp_size_t size; FILE *fp; mpz_init (z); for (i = 0; i < 32; i++) { for (neg = 0; neg <= 1; neg++) { want_len = i + 4; /* need this to get the twos complement right */ ASSERT_ALWAYS (sizeof (size) >= 4); size = i; if (neg) size = -size; p = want; for (j = 3; j >= 0; j--) *p++ = size >> (j*8); for (j = 0; j < i; j++) *p++ = BYTEVAL (j); ASSERT_ALWAYS (p <= want + sizeof (want)); fp = fopen_wplusb_or_die (FILENAME); got_ret = mpz_out_raw (fp, z); ASSERT_ALWAYS (fflush (fp) == 0); rewind (fp); got_read = fread (got, 1, sizeof(got), fp); ASSERT_ALWAYS (! ferror(fp)); ASSERT_ALWAYS (fclose (fp) == 0); if (got_ret != want_len) { printf ("check_out: wrong return value\n"); error = 1; } if (got_read != want_len) { printf ("check_out: wrong number of bytes read back\n"); error = 1; } if (memcmp (want, got, want_len) != 0) { printf ("check_out: wrong data\n"); error = 1; } if (error) { printf (" i=%d neg=%d\n", i, neg); mpz_trace (" z", z); printf (" got_ret %u\n", got_ret); printf (" got_read %u\n", got_read); printf (" want_len %u\n", want_len); printf (" want"); for (j = 0; j < want_len; j++) printf (" %02X", (unsigned) (unsigned char) want[j]); printf ("\n"); printf (" got "); for (j = 0; j < want_len; j++) printf (" %02X", (unsigned) (unsigned char) got[j]); printf ("\n"); abort (); } mpz_neg (z, z); } mpz_mul_2exp (z, z, 8); mpz_add_ui (z, z, (unsigned long) BYTEVAL (i)); } mpz_clear (z); } void check_rand (void) { gmp_randstate_t rands; int i, error = 0; mpz_t got, want; size_t inp_ret, out_ret; FILE *fp; mpz_init (want); mpz_init (got); gmp_randinit_default(rands); for (i = 0; i < 500; i++) { mpz_erandomb (want, rands, 10*BITS_PER_MP_LIMB); mpz_negrandom (want, rands); fp = fopen_wplusb_or_die (FILENAME); out_ret = mpz_out_raw (fp, want); ASSERT_ALWAYS (fflush (fp) == 0); rewind (fp); inp_ret = mpz_inp_raw (got, fp); ASSERT_ALWAYS (fclose (fp) == 0); MPZ_CHECK_FORMAT (got); if (inp_ret != out_ret) { printf ("check_rand: different inp/out return values\n"); error = 1; } if (mpz_cmp (got, want) != 0) { printf ("check_rand: wrong result\n"); error = 1; } if (error) { printf (" out_ret %u\n", out_ret); printf (" inp_ret %u\n", inp_ret); mpz_trace (" want", want); mpz_trace (" got ", got); abort (); } } mpz_clear (got); mpz_clear (want); gmp_randclear(rands); } int main (void) { tests_start (); mp_trace_base = -16; check_in (); check_out (); check_rand (); unlink (FILENAME); tests_end (); exit (0); }