2 * Copyright (c) 2011, 2012, 2013, 2014 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
26 #include "byte-order.h"
27 #include "command-line.h"
33 check_log_2_floor(uint32_t x, int n)
35 if (log_2_floor(x) != n) {
36 fprintf(stderr, "log_2_floor(%"PRIu32") is %d but should be %d\n",
37 x, log_2_floor(x), n);
43 test_log_2_floor(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
47 for (n = 0; n < 32; n++) {
48 /* Check minimum x such that f(x) == n. */
49 check_log_2_floor(1 << n, n);
51 /* Check maximum x such that f(x) == n. */
52 check_log_2_floor((1 << n) | ((1 << n) - 1), n);
54 /* Check a random value in the middle. */
55 check_log_2_floor((random_uint32() & ((1 << n) - 1)) | (1 << n), n);
58 /* log_2_floor(0) is undefined, so don't check it. */
62 check_ctz32(uint32_t x, int n)
65 fprintf(stderr, "ctz32(%"PRIu32") is %d but should be %d\n",
72 check_ctz64(uint64_t x, int n)
75 fprintf(stderr, "ctz64(%"PRIu64") is %d but should be %d\n",
82 test_ctz(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
86 for (n = 0; n < 32; n++) {
87 /* Check minimum x such that f(x) == n. */
88 check_ctz32(1 << n, n);
90 /* Check maximum x such that f(x) == n. */
91 check_ctz32(UINT32_MAX << n, n);
93 /* Check a random value in the middle. */
94 check_ctz32((random_uint32() | 1) << n, n);
98 for (n = 0; n < 64; n++) {
99 /* Check minimum x such that f(x) == n. */
100 check_ctz64(UINT64_C(1) << n, n);
102 /* Check maximum x such that f(x) == n. */
103 check_ctz64(UINT64_MAX << n, n);
105 /* Check a random value in the middle. */
106 check_ctz64((random_uint64() | UINT64_C(1)) << n, n);
115 check_clz32(uint32_t x, int n)
118 fprintf(stderr, "clz32(%"PRIu32") is %d but should be %d\n",
125 check_clz64(uint64_t x, int n)
128 fprintf(stderr, "clz64(%"PRIu64") is %d but should be %d\n",
135 test_clz(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
139 for (n = 0; n < 32; n++) {
140 /* Check minimum x such that f(x) == n. */
141 check_clz32((1u << 31) >> n, n);
143 /* Check maximum x such that f(x) == n. */
144 check_clz32(UINT32_MAX >> n, n);
146 /* Check a random value in the middle. */
147 check_clz32((random_uint32() | 1u << 31) >> n, n);
150 for (n = 0; n < 64; n++) {
151 /* Check minimum x such that f(x) == n. */
152 check_clz64((UINT64_C(1) << 63) >> n, n);
154 /* Check maximum x such that f(x) == n. */
155 check_clz64(UINT64_MAX >> n, n);
157 /* Check a random value in the middle. */
158 check_clz64((random_uint64() | UINT64_C(1) << 63) >> n, n);
166 /* Returns a random number in the range 'min'...'max' inclusive. */
168 random_in_range(uint32_t min, uint32_t max)
170 return min == max ? min : min + random_range(max - min + 1);
174 check_rup2(uint32_t x, int n)
176 uint32_t rup2 = ROUND_UP_POW2(x);
178 fprintf(stderr, "ROUND_UP_POW2(%#"PRIx32") is %#"PRIx32" "
179 "but should be %#"PRIx32"\n", x, rup2, n);
185 test_round_up_pow2(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
189 for (n = 0; n < 32; n++) {
190 /* Min, max value for which ROUND_UP_POW2 should yield (1 << n). */
191 uint32_t min = ((1u << n) >> 1) + 1;
192 uint32_t max = 1u << n;
194 check_rup2(min, 1u << n);
195 check_rup2(max, 1u << n);
196 check_rup2(random_in_range(min, max), 1u << n);
202 check_rdp2(uint32_t x, int n)
204 uint32_t rdp2 = ROUND_DOWN_POW2(x);
206 fprintf(stderr, "ROUND_DOWN_POW2(%#"PRIx32") is %#"PRIx32" "
207 "but should be %#"PRIx32"\n", x, rdp2, n);
213 test_round_down_pow2(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
217 for (n = 0; n < 32; n++) {
218 /* Min, max value for which ROUND_DOWN_POW2 should yield (1 << n). */
219 uint32_t min = 1u << n;
220 uint32_t max = ((1u << n) << 1) - 1;
222 check_rdp2(min, 1u << n);
223 check_rdp2(max, 1u << n);
224 check_rdp2(random_in_range(min, max), 1u << n);
230 shuffle(uint64_t *p, size_t n)
232 for (; n > 1; n--, p++) {
233 uint64_t *q = &p[random_range(n)];
241 check_count_1bits(uint64_t x, int n)
243 if (count_1bits(x) != n) {
244 fprintf(stderr, "count_1bits(%#"PRIx64") is %d but should be %d\n",
245 x, count_1bits(x), n);
251 test_count_1bits(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
256 for (i = 0; i < ARRAY_SIZE(bits); i++) {
257 bits[i] = UINT64_C(1) << i;
260 check_count_1bits(0, 0);
262 for (i = 0; i < 1000; i++) {
266 shuffle(bits, ARRAY_SIZE(bits));
267 for (j = 0; j < 64; j++) {
269 check_count_1bits(x, j + 1);
271 assert(x == UINT64_MAX);
273 shuffle(bits, ARRAY_SIZE(bits));
274 for (j = 63; j >= 0; j--) {
276 check_count_1bits(x, j);
282 /* Returns the sum of the squares of the first 'n' positive integers. */
284 sum_of_squares(int n)
286 return n * (n + 1) * (2 * n + 1) / 6;
290 test_bitwise_copy(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
292 unsigned int n_loops;
298 for (n_bits = 0; n_bits <= 64; n_bits++) {
299 for (src_ofs = 0; src_ofs < 64 - n_bits; src_ofs++) {
300 for (dst_ofs = 0; dst_ofs < 64 - n_bits; dst_ofs++) {
301 ovs_be64 src = htonll(random_uint64());
302 ovs_be64 dst = htonll(random_uint64());
303 ovs_be64 orig_dst = dst;
309 uint64_t mask = (UINT64_C(1) << n_bits) - 1;
310 expect = orig_dst & ~htonll(mask << dst_ofs);
311 expect |= htonll(((ntohll(src) >> src_ofs) & mask)
315 bitwise_copy(&src, sizeof src, src_ofs,
316 &dst, sizeof dst, dst_ofs,
319 fprintf(stderr,"copy_bits(0x%016"PRIx64",8,%d, "
320 "0x%016"PRIx64",8,%d, %d) yielded 0x%016"PRIx64" "
321 "instead of the expected 0x%016"PRIx64"\n",
322 ntohll(src), src_ofs,
323 ntohll(orig_dst), dst_ofs,
325 ntohll(dst), ntohll(expect));
334 if (n_loops != sum_of_squares(64)) {
340 test_bitwise_zero(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
342 unsigned int n_loops;
347 for (n_bits = 0; n_bits <= 64; n_bits++) {
348 for (dst_ofs = 0; dst_ofs < 64 - n_bits; dst_ofs++) {
349 ovs_be64 dst = htonll(random_uint64());
350 ovs_be64 orig_dst = dst;
356 uint64_t mask = (UINT64_C(1) << n_bits) - 1;
357 expect = orig_dst & ~htonll(mask << dst_ofs);
360 bitwise_zero(&dst, sizeof dst, dst_ofs, n_bits);
362 fprintf(stderr,"bitwise_zero(0x%016"PRIx64",8,%d, %d) "
363 "yielded 0x%016"PRIx64" "
364 "instead of the expected 0x%016"PRIx64"\n",
365 ntohll(orig_dst), dst_ofs,
367 ntohll(dst), ntohll(expect));
375 if (n_loops != 64 * (64 + 1) / 2) {
381 test_bitwise_one(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
383 unsigned int n_loops;
388 for (n_bits = 0; n_bits <= 64; n_bits++) {
389 for (dst_ofs = 0; dst_ofs < 64 - n_bits; dst_ofs++) {
390 ovs_be64 dst = htonll(random_uint64());
391 ovs_be64 orig_dst = dst;
395 expect = OVS_BE64_MAX;
397 uint64_t mask = (UINT64_C(1) << n_bits) - 1;
398 expect = orig_dst | htonll(mask << dst_ofs);
401 bitwise_one(&dst, sizeof dst, dst_ofs, n_bits);
403 fprintf(stderr,"bitwise_one(0x%016"PRIx64",8,%d, %d) "
404 "yielded 0x%016"PRIx64" "
405 "instead of the expected 0x%016"PRIx64"\n",
406 ntohll(orig_dst), dst_ofs,
408 ntohll(dst), ntohll(expect));
416 if (n_loops != 64 * (64 + 1) / 2) {
422 test_bitwise_is_all_zeros(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
426 for (n_loops = 0; n_loops < 100; n_loops++) {
427 ovs_be64 x = htonll(0);
430 for (i = 0; i < 64; i++) {
434 /* Change a random 0-bit into a 1-bit. */
436 bit = htonll(UINT64_C(1) << (random_range(64)));
440 for (ofs = 0; ofs < 64; ofs++) {
441 for (n = 0; n <= 64 - ofs; n++) {
447 : !(x & htonll(((UINT64_C(1) << n) - 1)
449 answer = bitwise_is_all_zeros(&x, sizeof x, ofs, n);
450 if (expect != answer) {
452 "bitwise_is_all_zeros(0x%016"PRIx64",8,%d,%d "
453 "returned %s instead of %s\n",
455 answer ? "true" : "false",
456 expect ? "true" : "false");
466 test_follow_symlinks(int argc, char *argv[])
470 for (i = 1; i < argc; i++) {
471 char *target = follow_symlinks(argv[i]);
478 test_assert(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
484 test_ovs_scan(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
486 char str[16], str2[16], str3[16];
500 ovs_assert(ovs_scan("", ""));
501 ovs_assert(ovs_scan("", " "));
502 ovs_assert(ovs_scan(" ", " "));
503 ovs_assert(ovs_scan(" ", " "));
504 ovs_assert(ovs_scan(" \t ", " "));
506 ovs_assert(ovs_scan("xyzzy", "xyzzy"));
507 ovs_assert(ovs_scan("xy%zzy", "xy%%zzy"));
508 ovs_assert(!ovs_scan(" xy%zzy", "xy%%zzy"));
509 ovs_assert(ovs_scan(" xy%\tzzy", " xy%% zzy"));
511 ovs_assert(ovs_scan("123", "%d", &i));
512 ovs_assert(i == 123);
513 ovs_assert(ovs_scan("0", "%d", &i));
515 ovs_assert(!ovs_scan("123", "%d%d", &i, &i2));
516 ovs_assert(ovs_scan("+123", "%d", &i));
517 ovs_assert(i == 123);
518 ovs_assert(ovs_scan("-123", "%d", &i));
519 ovs_assert(i == -123);
520 ovs_assert(ovs_scan("0123", "%d", &i));
521 ovs_assert(i == 123);
522 ovs_assert(ovs_scan(" 123", "%d", &i));
523 ovs_assert(i == 123);
524 ovs_assert(ovs_scan("0x123", "%d", &i));
526 ovs_assert(ovs_scan("123", "%2d %d", &i, &i2));
529 ovs_assert(ovs_scan("+123", "%2d %d", &i, &i2));
531 ovs_assert(i2 == 23);
532 ovs_assert(ovs_scan("-123", "%2d %d", &i, &i2));
534 ovs_assert(i2 == 23);
535 ovs_assert(ovs_scan("0123", "%2d %d", &i, &i2));
537 ovs_assert(i2 == 23);
538 ovs_assert(ovs_scan("123", "%*2d %d", &i));
540 ovs_assert(ovs_scan("+123", "%2d %*d", &i));
542 ovs_assert(i2 == 23);
543 ovs_assert(ovs_scan("-123", "%*2d %*d"));
545 ovs_assert(ovs_scan("123", "%u", &i));
546 ovs_assert(i == 123);
547 ovs_assert(ovs_scan("0", "%u", &i));
549 ovs_assert(!ovs_scan("123", "%u%u", &i, &i2));
550 ovs_assert(ovs_scan("+123", "%u", &i));
551 ovs_assert(i == 123);
552 ovs_assert(ovs_scan("-123", "%u", &i));
553 ovs_assert(i == -123);
554 ovs_assert(ovs_scan("0123", "%u", &i));
555 ovs_assert(i == 123);
556 ovs_assert(ovs_scan(" 123", "%u", &i));
557 ovs_assert(i == 123);
558 ovs_assert(ovs_scan("0x123", "%u", &i));
560 ovs_assert(ovs_scan("123", "%2u %u", &i, &i2));
563 ovs_assert(ovs_scan("+123", "%2u %u", &i, &i2));
565 ovs_assert(i2 == 23);
566 ovs_assert(ovs_scan("-123", "%2u %u", &i, &i2));
568 ovs_assert(i2 == 23);
569 ovs_assert(ovs_scan("0123", "%2u %u", &i, &i2));
571 ovs_assert(i2 == 23);
572 ovs_assert(ovs_scan("123", "%*2u %u", &i));
574 ovs_assert(ovs_scan("+123", "%2u %*u", &i));
576 ovs_assert(i2 == 23);
577 ovs_assert(ovs_scan("-123", "%*2u %*u"));
579 ovs_assert(ovs_scan("123", "%i", &i));
580 ovs_assert(i == 123);
581 ovs_assert(ovs_scan("0", "%i", &i));
583 ovs_assert(!ovs_scan("123", "%i%i", &i, &i2));
584 ovs_assert(ovs_scan("+123", "%i", &i));
585 ovs_assert(i == 123);
586 ovs_assert(ovs_scan("-123", "%i", &i));
587 ovs_assert(i == -123);
588 ovs_assert(ovs_scan("0123", "%i", &i));
589 ovs_assert(i == 0123);
590 ovs_assert(ovs_scan(" 123", "%i", &i));
591 ovs_assert(i == 123);
592 ovs_assert(ovs_scan("0x123", "%i", &i));
593 ovs_assert(i == 0x123);
594 ovs_assert(ovs_scan("123", "%2i %i", &i, &i2));
597 ovs_assert(ovs_scan("+123", "%2i %i", &i, &i2));
599 ovs_assert(i2 == 23);
600 ovs_assert(ovs_scan("-123", "%2i %i", &i, &i2));
602 ovs_assert(i2 == 23);
603 ovs_assert(ovs_scan("0123", "%2i %i", &i, &i2));
605 ovs_assert(i2 == 23);
606 ovs_assert(ovs_scan("123", "%*2i %i", &i));
608 ovs_assert(ovs_scan("+123", "%2i %*i", &i));
610 ovs_assert(i2 == 23);
611 ovs_assert(ovs_scan("-123", "%*2i %*i"));
613 ovs_assert(ovs_scan("123", "%o", &i));
614 ovs_assert(i == 0123);
615 ovs_assert(ovs_scan("0", "%o", &i));
617 ovs_assert(!ovs_scan("123", "%o%o", &i, &i2));
618 ovs_assert(ovs_scan("+123", "%o", &i));
619 ovs_assert(i == 0123);
620 ovs_assert(ovs_scan("-123", "%o", &i));
621 ovs_assert(i == -0123);
622 ovs_assert(ovs_scan("0123", "%o", &i));
623 ovs_assert(i == 0123);
624 ovs_assert(ovs_scan(" 123", "%o", &i));
625 ovs_assert(i == 0123);
626 ovs_assert(ovs_scan("0x123", "%o", &i));
628 ovs_assert(ovs_scan("123", "%2o %o", &i, &i2));
629 ovs_assert(i == 012);
631 ovs_assert(ovs_scan("+123", "%2o %o", &i, &i2));
633 ovs_assert(i2 == 023);
634 ovs_assert(ovs_scan("-123", "%2o %o", &i, &i2));
636 ovs_assert(i2 == 023);
637 ovs_assert(ovs_scan("0123", "%2o %o", &i, &i2));
639 ovs_assert(i2 == 023);
640 ovs_assert(ovs_scan("123", "%*2o %o", &i));
642 ovs_assert(ovs_scan("+123", "%2o %*o", &i));
644 ovs_assert(i2 == 023);
645 ovs_assert(ovs_scan("-123", "%*2o %*o"));
647 ovs_assert(ovs_scan("123", "%x", &i));
648 ovs_assert(i == 0x123);
649 ovs_assert(ovs_scan("0", "%x", &i));
651 ovs_assert(!ovs_scan("123", "%x%x", &i, &i2));
652 ovs_assert(ovs_scan("+123", "%x", &i));
653 ovs_assert(i == 0x123);
654 ovs_assert(ovs_scan("-123", "%x", &i));
655 ovs_assert(i == -0x123);
656 ovs_assert(ovs_scan("0123", "%x", &i));
657 ovs_assert(i == 0x123);
658 ovs_assert(ovs_scan(" 123", "%x", &i));
659 ovs_assert(i == 0x123);
660 ovs_assert(ovs_scan("0x123", "%x", &i));
661 ovs_assert(i == 0x123);
662 ovs_assert(ovs_scan("123", "%2x %x", &i, &i2));
663 ovs_assert(i == 0x12);
665 ovs_assert(ovs_scan("+123", "%2x %x", &i, &i2));
667 ovs_assert(i2 == 0x23);
668 ovs_assert(ovs_scan("-123", "%2x %x", &i, &i2));
670 ovs_assert(i2 == 0x23);
671 ovs_assert(ovs_scan("0123", "%2x %x", &i, &i2));
673 ovs_assert(i2 == 0x23);
674 ovs_assert(ovs_scan("123", "%*2x %x", &i));
676 ovs_assert(ovs_scan("+123", "%2x %*x", &i));
678 ovs_assert(i2 == 0x23);
679 ovs_assert(ovs_scan("-123", "%*2x %*x"));
681 ovs_assert(ovs_scan("123", "%hd", &s));
682 ovs_assert(s == 123);
683 ovs_assert(!ovs_scan("123", "%hd%hd", &s, &s2));
684 ovs_assert(ovs_scan("+123", "%hd", &s));
685 ovs_assert(s == 123);
686 ovs_assert(ovs_scan("-123", "%hd", &s));
687 ovs_assert(s == -123);
688 ovs_assert(ovs_scan("0123", "%hd", &s));
689 ovs_assert(s == 123);
690 ovs_assert(ovs_scan(" 123", "%hd", &s));
691 ovs_assert(s == 123);
692 ovs_assert(ovs_scan("0x123", "%hd", &s));
694 ovs_assert(ovs_scan("123", "%2hd %hd", &s, &s2));
697 ovs_assert(ovs_scan("+123", "%2hd %hd", &s, &s2));
699 ovs_assert(s2 == 23);
700 ovs_assert(ovs_scan("-123", "%2hd %hd", &s, &s2));
702 ovs_assert(s2 == 23);
703 ovs_assert(ovs_scan("0123", "%2hd %hd", &s, &s2));
705 ovs_assert(s2 == 23);
707 ovs_assert(ovs_scan("123", "%hhd", &c));
708 ovs_assert(c == 123);
709 ovs_assert(ovs_scan("0", "%hhd", &c));
711 ovs_assert(!ovs_scan("123", "%hhd%hhd", &c, &c2));
712 ovs_assert(ovs_scan("+123", "%hhd", &c));
713 ovs_assert(c == 123);
714 ovs_assert(ovs_scan("-123", "%hhd", &c));
715 ovs_assert(c == -123);
716 ovs_assert(ovs_scan("0123", "%hhd", &c));
717 ovs_assert(c == 123);
718 ovs_assert(ovs_scan(" 123", "%hhd", &c));
719 ovs_assert(c == 123);
720 ovs_assert(ovs_scan("0x123", "%hhd", &c));
722 ovs_assert(ovs_scan("123", "%2hhd %hhd", &c, &c2));
725 ovs_assert(ovs_scan("+123", "%2hhd %hhd", &c, &c2));
727 ovs_assert(c2 == 23);
728 ovs_assert(ovs_scan("-123", "%2hhd %hhd", &c, &c2));
730 ovs_assert(c2 == 23);
731 ovs_assert(ovs_scan("0123", "%2hhd %hhd", &c, &c2));
733 ovs_assert(c2 == 23);
735 ovs_assert(ovs_scan("123", "%ld", &l));
736 ovs_assert(l == 123);
737 ovs_assert(ovs_scan("0", "%ld", &l));
739 ovs_assert(!ovs_scan("123", "%ld%ld", &l, &l2));
740 ovs_assert(ovs_scan("+123", "%ld", &l));
741 ovs_assert(l == 123);
742 ovs_assert(ovs_scan("-123", "%ld", &l));
743 ovs_assert(l == -123);
744 ovs_assert(ovs_scan("0123", "%ld", &l));
745 ovs_assert(l == 123);
746 ovs_assert(ovs_scan(" 123", "%ld", &l));
747 ovs_assert(l == 123);
748 ovs_assert(ovs_scan("0x123", "%ld", &l));
750 ovs_assert(ovs_scan("123", "%2ld %ld", &l, &l2));
753 ovs_assert(ovs_scan("+123", "%2ld %ld", &l, &l2));
755 ovs_assert(l2 == 23);
756 ovs_assert(ovs_scan("-123", "%2ld %ld", &l, &l2));
758 ovs_assert(l2 == 23);
759 ovs_assert(ovs_scan("0123", "%2ld %ld", &l, &l2));
761 ovs_assert(l2 == 23);
763 ovs_assert(ovs_scan("123", "%lld", &ll));
764 ovs_assert(ll == 123);
765 ovs_assert(ovs_scan("0", "%lld", &ll));
767 ovs_assert(!ovs_scan("123", "%lld%lld", &ll, &ll2));
768 ovs_assert(ovs_scan("+123", "%lld", &ll));
769 ovs_assert(ll == 123);
770 ovs_assert(ovs_scan("-123", "%lld", &ll));
771 ovs_assert(ll == -123);
772 ovs_assert(ovs_scan("0123", "%lld", &ll));
773 ovs_assert(ll == 123);
774 ovs_assert(ovs_scan(" 123", "%lld", &ll));
775 ovs_assert(ll == 123);
776 ovs_assert(ovs_scan("0x123", "%lld", &ll));
778 ovs_assert(ovs_scan("123", "%2lld %lld", &ll, &ll2));
779 ovs_assert(ll == 12);
780 ovs_assert(ll2 == 3);
781 ovs_assert(ovs_scan("+123", "%2lld %lld", &ll, &ll2));
783 ovs_assert(ll2 == 23);
784 ovs_assert(ovs_scan("-123", "%2lld %lld", &ll, &ll2));
785 ovs_assert(ll == -1);
786 ovs_assert(ll2 == 23);
787 ovs_assert(ovs_scan("0123", "%2lld %lld", &ll, &ll2));
789 ovs_assert(ll2 == 23);
791 ovs_assert(ovs_scan("123", "%jd", &im));
792 ovs_assert(im == 123);
793 ovs_assert(ovs_scan("0", "%jd", &im));
795 ovs_assert(!ovs_scan("123", "%jd%jd", &im, &im2));
796 ovs_assert(ovs_scan("+123", "%jd", &im));
797 ovs_assert(im == 123);
798 ovs_assert(ovs_scan("-123", "%jd", &im));
799 ovs_assert(im == -123);
800 ovs_assert(ovs_scan("0123", "%jd", &im));
801 ovs_assert(im == 123);
802 ovs_assert(ovs_scan(" 123", "%jd", &im));
803 ovs_assert(im == 123);
804 ovs_assert(ovs_scan("0x123", "%jd", &im));
806 ovs_assert(ovs_scan("123", "%2jd %jd", &im, &im2));
807 ovs_assert(im == 12);
808 ovs_assert(im2 == 3);
809 ovs_assert(ovs_scan("+123", "%2jd %jd", &im, &im2));
811 ovs_assert(im2 == 23);
812 ovs_assert(ovs_scan("-123", "%2jd %jd", &im, &im2));
813 ovs_assert(im == -1);
814 ovs_assert(im2 == 23);
815 ovs_assert(ovs_scan("0123", "%2jd %jd", &im, &im2));
817 ovs_assert(im2 == 23);
819 ovs_assert(ovs_scan("123", "%td", &pd));
820 ovs_assert(pd == 123);
821 ovs_assert(ovs_scan("0", "%td", &pd));
823 ovs_assert(!ovs_scan("123", "%td%td", &pd, &pd2));
824 ovs_assert(ovs_scan("+123", "%td", &pd));
825 ovs_assert(pd == 123);
826 ovs_assert(ovs_scan("-123", "%td", &pd));
827 ovs_assert(pd == -123);
828 ovs_assert(ovs_scan("0123", "%td", &pd));
829 ovs_assert(pd == 123);
830 ovs_assert(ovs_scan(" 123", "%td", &pd));
831 ovs_assert(pd == 123);
832 ovs_assert(ovs_scan("0x123", "%td", &pd));
834 ovs_assert(ovs_scan("123", "%2td %td", &pd, &pd2));
835 ovs_assert(pd == 12);
836 ovs_assert(pd2 == 3);
837 ovs_assert(ovs_scan("+123", "%2td %td", &pd, &pd2));
839 ovs_assert(pd2 == 23);
840 ovs_assert(ovs_scan("-123", "%2td %td", &pd, &pd2));
841 ovs_assert(pd == -1);
842 ovs_assert(pd2 == 23);
843 ovs_assert(ovs_scan("0123", "%2td %td", &pd, &pd2));
845 ovs_assert(pd2 == 23);
847 ovs_assert(ovs_scan("123", "%zd", &sz));
848 ovs_assert(sz == 123);
849 ovs_assert(ovs_scan("0", "%zd", &sz));
851 ovs_assert(!ovs_scan("123", "%zd%zd", &sz, &sz2));
852 ovs_assert(ovs_scan("+123", "%zd", &sz));
853 ovs_assert(sz == 123);
854 ovs_assert(ovs_scan("-123", "%zd", &sz));
855 ovs_assert(sz == -123);
856 ovs_assert(ovs_scan("0123", "%zd", &sz));
857 ovs_assert(sz == 123);
858 ovs_assert(ovs_scan(" 123", "%zd", &sz));
859 ovs_assert(sz == 123);
860 ovs_assert(ovs_scan("0x123", "%zd", &sz));
862 ovs_assert(ovs_scan("123", "%2zd %zd", &sz, &sz2));
863 ovs_assert(sz == 12);
864 ovs_assert(sz2 == 3);
865 ovs_assert(ovs_scan("+123", "%2zd %zd", &sz, &sz2));
867 ovs_assert(sz2 == 23);
868 ovs_assert(ovs_scan("-123", "%2zd %zd", &sz, &sz2));
869 ovs_assert(sz == -1);
870 ovs_assert(sz2 == 23);
871 ovs_assert(ovs_scan("0123", "%2zd %zd", &sz, &sz2));
873 ovs_assert(sz2 == 23);
875 ovs_assert(ovs_scan("0.25", "%f", &f));
876 ovs_assert(f == 0.25);
877 ovs_assert(ovs_scan("1.0", "%f", &f));
878 ovs_assert(f == 1.0);
879 ovs_assert(ovs_scan("-5", "%f", &f));
880 ovs_assert(f == -5.0);
881 ovs_assert(ovs_scan("+6", "%f", &f));
882 ovs_assert(f == 6.0);
883 ovs_assert(ovs_scan("-1e5", "%f", &f));
884 ovs_assert(f == -1e5);
885 ovs_assert(ovs_scan("-.25", "%f", &f));
886 ovs_assert(f == -.25);
887 ovs_assert(ovs_scan("+123.e1", "%f", &f));
888 ovs_assert(f == 1230.0);
889 ovs_assert(ovs_scan("25e-2", "%f", &f));
890 ovs_assert(f == 0.25);
891 ovs_assert(ovs_scan("0.25", "%1f %f", &f, &f2));
893 ovs_assert(f2 == 0.25);
894 ovs_assert(ovs_scan("1.0", "%2f %f", &f, &f2));
895 ovs_assert(f == 1.0);
896 ovs_assert(f2 == 0.0);
897 ovs_assert(!ovs_scan("-5", "%1f", &f));
898 ovs_assert(!ovs_scan("+6", "%1f", &f));
899 ovs_assert(!ovs_scan("-1e5", "%2f %*f", &f));
901 ovs_assert(!ovs_scan("-.25", "%2f", &f));
902 ovs_assert(!ovs_scan("+123.e1", "%6f", &f));
903 ovs_assert(!ovs_scan("25e-2", "%4f", &f));
905 ovs_assert(ovs_scan("0.25", "%lf", &d));
906 ovs_assert(d == 0.25);
907 ovs_assert(ovs_scan("1.0", "%lf", &d));
908 ovs_assert(d == 1.0);
909 ovs_assert(ovs_scan("-5", "%lf", &d));
910 ovs_assert(d == -5.0);
911 ovs_assert(ovs_scan("+6", "%lf", &d));
912 ovs_assert(d == 6.0);
913 ovs_assert(ovs_scan("-1e5", "%lf", &d));
914 ovs_assert(d == -1e5);
915 ovs_assert(ovs_scan("-.25", "%lf", &d));
916 ovs_assert(d == -.25);
917 ovs_assert(ovs_scan("+123.e1", "%lf", &d));
918 ovs_assert(d == 1230.0);
919 ovs_assert(ovs_scan("25e-2", "%lf", &d));
920 ovs_assert(d == 0.25);
921 ovs_assert(ovs_scan("0.25", "%1lf %lf", &d, &d2));
923 ovs_assert(d2 == 0.25);
924 ovs_assert(ovs_scan("1.0", "%2lf %lf", &d, &d2));
925 ovs_assert(d == 1.0);
926 ovs_assert(d2 == 0.0);
927 ovs_assert(!ovs_scan("-5", "%1lf", &d));
928 ovs_assert(!ovs_scan("+6", "%1lf", &d));
929 ovs_assert(!ovs_scan("-1e5", "%2lf %*f", &d));
931 ovs_assert(!ovs_scan("-.25", "%2lf", &d));
932 ovs_assert(!ovs_scan("+123.e1", "%6lf", &d));
933 ovs_assert(!ovs_scan("25e-2", "%4lf", &d));
935 ovs_assert(ovs_scan("0.25", "%Lf", &ld));
936 ovs_assert(ld == 0.25);
937 ovs_assert(ovs_scan("1.0", "%Lf", &ld));
938 ovs_assert(ld == 1.0);
939 ovs_assert(ovs_scan("-5", "%Lf", &ld));
940 ovs_assert(ld == -5.0);
941 ovs_assert(ovs_scan("+6", "%Lf", &ld));
942 ovs_assert(ld == 6.0);
943 ovs_assert(ovs_scan("-1e5", "%Lf", &ld));
944 ovs_assert(ld == -1e5);
945 ovs_assert(ovs_scan("-.25", "%Lf", &ld));
946 ovs_assert(ld == -.25);
947 ovs_assert(ovs_scan("+123.e1", "%Lf", &ld));
948 ovs_assert(ld == 1230.0);
949 ovs_assert(ovs_scan("25e-2", "%Lf", &ld));
950 ovs_assert(ld == 0.25);
951 ovs_assert(ovs_scan("0.25", "%1Lf %Lf", &ld, &ld2));
953 ovs_assert(ld2 == 0.25);
954 ovs_assert(ovs_scan("1.0", "%2Lf %Lf", &ld, &ld2));
955 ovs_assert(ld == 1.0);
956 ovs_assert(ld2 == 0.0);
957 ovs_assert(!ovs_scan("-5", "%1Lf", &ld));
958 ovs_assert(!ovs_scan("+6", "%1Lf", &ld));
959 ovs_assert(!ovs_scan("-1e5", "%2Lf %*f", &ld));
960 ovs_assert(ld == -1);
961 ovs_assert(!ovs_scan("-.25", "%2Lf", &ld));
962 ovs_assert(!ovs_scan("+123.e1", "%6Lf", &ld));
963 ovs_assert(!ovs_scan("25e-2", "%4Lf", &ld));
965 ovs_assert(ovs_scan(" Hello,\tworld ", "%*s%n%*s%n", &n, &n2));
967 ovs_assert(n2 == 13);
968 ovs_assert(!ovs_scan(" Hello,\tworld ", "%*s%*s%*s"));
969 ovs_assert(ovs_scan(" Hello,\tworld ", "%6s%n%5s%n", str, &n, str2, &n2));
970 ovs_assert(!strcmp(str, "Hello,"));
972 ovs_assert(!strcmp(str2, "world"));
973 ovs_assert(n2 == 13);
974 ovs_assert(ovs_scan(" Hello,\tworld ", "%5s%5s%5s", str, str2, str3));
975 ovs_assert(!strcmp(str, "Hello"));
976 ovs_assert(!strcmp(str2, ","));
977 ovs_assert(!strcmp(str3, "world"));
978 ovs_assert(!ovs_scan(" ", "%*s"));
980 ovs_assert(ovs_scan(" Hello,\tworld ", "%*c%n%*c%n%c%n",
984 ovs_assert(c == 'e');
986 ovs_assert(ovs_scan(" Hello,\tworld ", "%*5c%5c", str));
987 ovs_assert(!memcmp(str, "o,\two", 5));
988 ovs_assert(!ovs_scan(" Hello,\tworld ", "%*15c"));
990 ovs_assert(ovs_scan("0x1234xyzzy", "%9[x0-9a-fA-F]%n", str, &n));
991 ovs_assert(!strcmp(str, "0x1234x"));
993 ovs_assert(ovs_scan("foo:bar=baz", "%5[^:=]%n:%5[^:=]%n=%5[^:=]%n",
994 str, &n, str2, &n2, str3, &n3));
995 ovs_assert(!strcmp(str, "foo"));
997 ovs_assert(!strcmp(str2, "bar"));
999 ovs_assert(!strcmp(str3, "baz"));
1000 ovs_assert(n3 == 11);
1001 ovs_assert(!ovs_scan(" ", "%*[0-9]"));
1002 ovs_assert(ovs_scan("0x123a]4xyzzy-", "%[]x0-9a-fA-F]", str));
1003 ovs_assert(!strcmp(str, "0x123a]4x"));
1004 ovs_assert(ovs_scan("abc]xyz","%[^]xyz]", str));
1005 ovs_assert(!strcmp(str, "abc"));
1006 ovs_assert(!ovs_scan("0x123a]4xyzzy-", "%[x0-9]a-fA-F]", str));
1007 ovs_assert(ovs_scan("0x12-3]xyz", "%[x0-9a-f-]", str));
1008 ovs_assert(!strcmp(str, "0x12-3"));
1009 ovs_assert(ovs_scan("0x12-3]xyz", "%[^a-f-]", str));
1010 ovs_assert(!strcmp(str, "0x12"));
1011 ovs_assert(sscanf("0x12-3]xyz", "%[^-a-f]", str));
1012 ovs_assert(!strcmp(str, "0x12"));
1016 test_snprintf(int argc OVS_UNUSED, char *argv[] OVS_UNUSED)
1020 ovs_assert(snprintf(s, 4, "abcde") == 5);
1021 ovs_assert(!strcmp(s, "abc"));
1023 ovs_assert(snprintf(s, 5, "abcde") == 5);
1024 ovs_assert(!strcmp(s, "abcd"));
1026 ovs_assert(snprintf(s, 6, "abcde") == 5);
1027 ovs_assert(!strcmp(s, "abcde"));
1029 ovs_assert(snprintf(NULL, 0, "abcde") == 5);
1034 test_file_name(int argc, char *argv[])
1038 for (i = 1; i < argc; i++) {
1041 dir = dir_name(argv[i]);
1045 base = base_name(argv[i]);
1052 static const struct command commands[] = {
1053 {"ctz", NULL, 0, 0, test_ctz},
1054 {"clz", NULL, 0, 0, test_clz},
1055 {"round_up_pow2", NULL, 0, 0, test_round_up_pow2},
1056 {"round_down_pow2", NULL, 0, 0, test_round_down_pow2},
1057 {"count_1bits", NULL, 0, 0, test_count_1bits},
1058 {"log_2_floor", NULL, 0, 0, test_log_2_floor},
1059 {"bitwise_copy", NULL, 0, 0, test_bitwise_copy},
1060 {"bitwise_zero", NULL, 0, 0, test_bitwise_zero},
1061 {"bitwise_one", NULL, 0, 0, test_bitwise_one},
1062 {"bitwise_is_all_zeros", NULL, 0, 0, test_bitwise_is_all_zeros},
1063 {"follow-symlinks", NULL, 1, INT_MAX, test_follow_symlinks},
1064 {"assert", NULL, 0, 0, test_assert},
1065 {"ovs_scan", NULL, 0, 0, test_ovs_scan},
1066 {"snprintf", NULL, 0, 0, test_snprintf},
1068 {"file_name", NULL, 1, INT_MAX, test_file_name},
1070 {NULL, NULL, 0, 0, NULL},
1074 parse_options(int argc, char *argv[])
1079 static const struct option long_options[] = {
1083 char *short_options = long_options_to_short_options(long_options);
1086 int c = getopt_long(argc, argv, short_options, long_options, NULL);
1092 VLOG_OPTION_HANDLERS
1101 free(short_options);
1105 test_util_main(int argc, char *argv[])
1107 set_program_name(argv[0]);
1108 parse_options(argc, argv);
1109 /* On Windows, stderr is fully buffered if connected to a pipe.
1110 * Make it _IONBF so that an abort does not miss log contents.
1111 * POSIX doesn't define the circumstances in which stderr is
1112 * fully buffered either. */
1113 setvbuf(stderr, NULL, _IONBF, 0);
1114 run_command(argc - optind, argv + optind, commands);
1117 OVSTEST_REGISTER("test-util", test_util_main);