1 /* Copyright 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
3 This program is free software; you can redistribute it and/or modify it under
4 the terms of the GNU General Public License as published by the Free Software
5 Foundation; either version 3 of the License, or (at your option) any later
8 This program is distributed in the hope that it will be useful, but WITHOUT ANY
9 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
10 PARTICULAR PURPOSE. See the GNU General Public License for more details.
12 You should have received a copy of the GNU General Public License along with
13 this program. If not, see http://www.gnu.org/licenses/. */
16 #include <stdlib.h> /* for strtol */
17 #include <stdio.h> /* for printf */
22 #include "tests/tests.h"
26 dumpy (mp_srcptr p, mp_size_t n)
31 for (i = n - 1; i >= n - 4; i--)
33 printf ("%0*lx", (int) (2 * sizeof (mp_limb_t)), p[i]);
37 for (i = 3; i >= 0; i--)
39 printf ("%0*lx", (int) (2 * sizeof (mp_limb_t)), p[i]);
40 printf (" " + (i == 0));
45 for (i = n - 1; i >= 0; i--)
47 printf ("%0*lx", (int) (2 * sizeof (mp_limb_t)), p[i]);
48 printf (" " + (i == 0));
54 static unsigned long test;
57 check_one (mp_ptr qp, mp_srcptr rp,
58 mp_srcptr np, mp_size_t nn, mp_srcptr dp, mp_size_t dn,
59 char *fname, mp_limb_t q_allowed_err)
61 mp_size_t qn = nn - dn + 1;
69 tp = TMP_ALLOC_LIMBS (nn + 1);
71 refmpn_mul (tp, dp, dn, qp, qn);
73 refmpn_mul (tp, qp, qn, dp, dn);
75 for (i = 0; i < q_allowed_err && (tp[nn] > 0 || mpn_cmp (tp, np, nn) > 0); i++)
76 ASSERT_NOCARRY (refmpn_sub (tp, tp, nn+1, dp, dn));
78 if (tp[nn] > 0 || mpn_cmp (tp, np, nn) > 0)
83 printf ("\r*******************************************************************************\n");
84 printf ("%s failed test %lu: %s\n", fname, test, msg);
85 printf ("N= "); dumpy (np, nn);
86 printf ("D= "); dumpy (dp, dn);
87 printf ("Q= "); dumpy (qp, qn);
89 { printf ("R= "); dumpy (rp, dn); }
90 printf ("%5s=", tvalue); dumpy (tp, nn+1);
91 printf ("nn = %ld, dn = %ld, qn = %ld\n", nn, dn, qn);
95 ASSERT_NOCARRY (refmpn_sub_n (tp, np, tp, nn));
97 if (!mpn_zero_p (tp + dn, nn - dn) || mpn_cmp (tp, dp, dn) >= 0)
103 if (rp && mpn_cmp (rp, tp, dn) != 0)
113 /* These are *bit* sizes. */
117 #define MAX_DN (1L << SIZE_LOG)
118 #define MAX_NN (1L << (SIZE_LOG + 1))
123 random_word (gmp_randstate_ptr rs)
131 mpz_urandomb (x, rs, 32);
138 main (int argc, char **argv)
140 gmp_randstate_ptr rands;
141 unsigned long maxnbits, maxdbits, nbits, dbits;
142 mpz_t n, d, q, r, tz;
143 mp_size_t maxnn, maxdn, nn, dn, clearn, i;
144 mp_ptr np, dp, qp, rp;
150 mp_size_t alloc, itch;
151 mp_limb_t rran0, rran1, qran0, qran1;
157 count = strtol (argv[1], &end, 0);
158 if (*end || count <= 0)
160 fprintf (stderr, "Invalid test count: %s.\n", argv[1]);
178 maxnn = maxnbits / GMP_NUMB_BITS + 1;
179 maxdn = maxdbits / GMP_NUMB_BITS + 1;
183 qp = TMP_ALLOC_LIMBS (maxnn + 2) + 1;
184 rp = TMP_ALLOC_LIMBS (maxnn + 2) + 1;
187 scratch = __GMP_ALLOCATE_FUNC_LIMBS (alloc);
189 for (test = 0; test < count;)
193 nbits = random_word (rands) % (maxnbits - GMP_NUMB_BITS) + 2 * GMP_NUMB_BITS;
194 if (maxdbits > nbits)
195 dbits = random_word (rands) % nbits + 1;
197 dbits = random_word (rands) % maxdbits + 1;
199 while (nbits < dbits);
202 #define RANDFUNC mpz_urandomb
204 #define RANDFUNC mpz_rrandomb
208 RANDFUNC (d, rands, dbits);
209 while (mpz_sgn (d) == 0);
212 dp[dn - 1] |= GMP_NUMB_HIGHBIT;
216 RANDFUNC (n, rands, nbits);
218 ASSERT_ALWAYS (nn >= dn);
224 RANDFUNC (q, rands, random_word (rands) % (nbits - dbits + 1));
225 RANDFUNC (r, rands, random_word (rands) % mpz_sizeinbase (d, 2));
230 while (nn > maxnn || nn < dn);
233 ASSERT_ALWAYS (nn <= maxnn);
234 ASSERT_ALWAYS (dn <= maxdn);
238 mpz_urandomb (tz, rands, 32);
242 dp[dn - 1] = GMP_NUMB_MAX;
247 clearn = random_word (rands) % nn;
248 for (i = clearn; i < nn; i++)
252 mpn_sub_1 (np + nn - dn, dp, dn, random_word (rands));
255 mpn_add_1 (np + nn - dn, dp, dn, random_word (rands));
261 invert_pi1 (dinv, dp[dn - 1], dp[dn - 2]);
263 rran0 = random_word (rands);
264 rran1 = random_word (rands);
265 qran0 = random_word (rands);
266 qran1 = random_word (rands);
269 qp[nn - dn + 1] = qran1;
272 ran = random_word (rands);
274 if ((double) (nn - dn) * dn < 1e5)
276 /* Test mpn_sbpi1_div_qr */
279 MPN_COPY (rp, np, nn);
281 MPN_ZERO (qp, nn - dn);
282 qp[nn - dn] = mpn_sbpi1_div_qr (qp, rp, nn, dp, dn, dinv.inv32);
283 check_one (qp, rp, np, nn, dp, dn, "mpn_sbpi1_div_qr", 0);
286 /* Test mpn_sbpi1_divappr_q */
289 MPN_COPY (rp, np, nn);
291 MPN_ZERO (qp, nn - dn);
292 qp[nn - dn] = mpn_sbpi1_divappr_q (qp, rp, nn, dp, dn, dinv.inv32);
293 check_one (qp, NULL, np, nn, dp, dn, "mpn_sbpi1_divappr_q", 1);
296 /* Test mpn_sbpi1_div_q */
299 MPN_COPY (rp, np, nn);
301 MPN_ZERO (qp, nn - dn);
302 qp[nn - dn] = mpn_sbpi1_div_q (qp, rp, nn, dp, dn, dinv.inv32);
303 check_one (qp, NULL, np, nn, dp, dn, "mpn_sbpi1_div_q", 0);
307 /* Test mpn_dcpi1_div_qr */
308 if (dn >= 6 && nn - dn >= 3)
310 MPN_COPY (rp, np, nn);
312 MPN_ZERO (qp, nn - dn);
313 qp[nn - dn] = mpn_dcpi1_div_qr (qp, rp, nn, dp, dn, &dinv);
314 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
315 ASSERT_ALWAYS (rp[-1] == rran0);
316 check_one (qp, rp, np, nn, dp, dn, "mpn_dcpi1_div_qr", 0);
319 /* Test mpn_dcpi1_divappr_q */
320 if (dn >= 6 && nn - dn >= 3)
322 MPN_COPY (rp, np, nn);
324 MPN_ZERO (qp, nn - dn);
325 qp[nn - dn] = mpn_dcpi1_divappr_q (qp, rp, nn, dp, dn, &dinv);
326 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
327 ASSERT_ALWAYS (rp[-1] == rran0);
328 check_one (qp, NULL, np, nn, dp, dn, "mpn_dcpi1_divappr_q", 1);
331 /* Test mpn_dcpi1_div_q */
332 if (dn >= 6 && nn - dn >= 3)
334 MPN_COPY (rp, np, nn);
336 MPN_ZERO (qp, nn - dn);
337 qp[nn - dn] = mpn_dcpi1_div_q (qp, rp, nn, dp, dn, &dinv);
338 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
339 ASSERT_ALWAYS (rp[-1] == rran0);
340 check_one (qp, NULL, np, nn, dp, dn, "mpn_dcpi1_div_q", 0);
343 /* Test mpn_mu_div_qr */
344 if (nn - dn > 2 && dn >= 2)
346 itch = mpn_mu_div_qr_itch (nn, dn, 0);
347 if (itch + 1 > alloc)
349 scratch = __GMP_REALLOCATE_FUNC_LIMBS (scratch, alloc, itch + 1);
353 MPN_ZERO (qp, nn - dn);
356 qp[nn - dn] = mpn_mu_div_qr (qp, rp, np, nn, dp, dn, scratch);
357 ASSERT_ALWAYS (ran == scratch[itch]);
358 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
359 ASSERT_ALWAYS (rp[-1] == rran0); ASSERT_ALWAYS (rp[dn] == rran1);
360 check_one (qp, rp, np, nn, dp, dn, "mpn_mu_div_qr", 0);
363 /* Test mpn_mu_divappr_q */
364 if (nn - dn > 2 && dn >= 2)
366 itch = mpn_mu_divappr_q_itch (nn, dn, 0);
367 if (itch + 1 > alloc)
369 scratch = __GMP_REALLOCATE_FUNC_LIMBS (scratch, alloc, itch + 1);
373 MPN_ZERO (qp, nn - dn);
374 qp[nn - dn] = mpn_mu_divappr_q (qp, np, nn, dp, dn, scratch);
375 ASSERT_ALWAYS (ran == scratch[itch]);
376 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
377 check_one (qp, NULL, np, nn, dp, dn, "mpn_mu_divappr_q", 4);
380 /* Test mpn_mu_div_q */
381 if (nn - dn > 2 && dn >= 2)
383 itch = mpn_mu_div_q_itch (nn, dn, 0);
386 scratch = __GMP_REALLOCATE_FUNC_LIMBS (scratch, alloc, itch + 1);
390 MPN_ZERO (qp, nn - dn);
391 qp[nn - dn] = mpn_mu_div_q (qp, np, nn, dp, dn, scratch);
392 ASSERT_ALWAYS (ran == scratch[itch]);
393 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
394 check_one (qp, NULL, np, nn, dp, dn, "mpn_mu_div_q", 0);
403 scratch = __GMP_REALLOCATE_FUNC_LIMBS (scratch, alloc, itch + 1);
407 mpn_div_q (qp, np, nn, dp, dn, scratch);
408 ASSERT_ALWAYS (ran == scratch[itch]);
409 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
410 check_one (qp, NULL, np, nn, dp, dn, "mpn_div_q", 0);
413 /* Finally, test mpn_div_q without msb set. */
414 dp[dn - 1] &= ~GMP_NUMB_HIGHBIT;
421 scratch = __GMP_REALLOCATE_FUNC_LIMBS (scratch, alloc, itch + 1);
425 mpn_div_q (qp, np, nn, dp, dn, scratch);
426 ASSERT_ALWAYS (ran == scratch[itch]);
427 ASSERT_ALWAYS (qp[-1] == qran0); ASSERT_ALWAYS (qp[nn - dn + 1] == qran1);
428 check_one (qp, NULL, np, nn, dp, dn, "mpn_div_q", 0);
431 __GMP_FREE_FUNC_LIMBS (scratch, alloc);