2 * Copyright (C) 2008 Free Software Foundation
3 * Written by Eric Blake
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #define ASSERT(expr) \
33 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
34 /* FIXME abort ();*/status = 1; \
43 /* Subject sequence empty or invalid. */
46 const char input[] = "";
48 double result = strtod (input, &ptr);
49 ASSERT (result == 0.0);
50 ASSERT (!signbit (result));
51 ASSERT (ptr == input);
52 ASSERT (errno == 0 || errno == EINVAL);
56 const char input[] = " ";
58 double result = strtod (input, &ptr);
59 ASSERT (result == 0.0);
60 ASSERT (!signbit (result));
61 ASSERT (ptr == input);
62 ASSERT (errno == 0 || errno == EINVAL);
66 const char input[] = " +";
68 double result = strtod (input, &ptr);
69 ASSERT (result == 0.0);
70 ASSERT (!signbit (result));
71 ASSERT (ptr == input);
72 ASSERT (errno == 0 || errno == EINVAL);
76 const char input[] = " .";
78 double result = strtod (input, &ptr);
79 ASSERT (result == 0.0);
80 ASSERT (!signbit (result));
81 ASSERT (ptr == input);
82 ASSERT (errno == 0 || errno == EINVAL);
86 const char input[] = " .e0";
88 double result = strtod (input, &ptr);
89 ASSERT (result == 0.0);
90 ASSERT (!signbit (result));
91 ASSERT (ptr == input);
92 ASSERT (errno == 0 || errno == EINVAL);
96 const char input[] = " +.e-0";
98 double result = strtod (input, &ptr);
99 ASSERT (result == 0.0);
100 ASSERT (!signbit (result));
101 ASSERT (ptr == input);
102 ASSERT (errno == 0 || errno == EINVAL);
106 const char input[] = " in";
108 double result = strtod (input, &ptr);
109 ASSERT (result == 0.0);
110 ASSERT (!signbit (result));
111 ASSERT (ptr == input);
112 ASSERT (errno == 0 || errno == EINVAL);
116 const char input[] = " na";
118 double result = strtod (input, &ptr);
119 ASSERT (result == 0.0);
120 ASSERT (!signbit (result));
121 ASSERT (ptr == input);
122 ASSERT (errno == 0 || errno == EINVAL);
125 /* Simple floating point values. */
128 const char input[] = "1";
130 double result = strtod (input, &ptr);
131 ASSERT (result == 1.0);
132 ASSERT (ptr == input + 1);
137 const char input[] = "1.";
139 double result = strtod (input, &ptr);
140 ASSERT (result == 1.0);
141 ASSERT (ptr == input + 2);
146 const char input[] = ".5";
148 double result = strtod (input, &ptr);
149 ASSERT (result == 0.5);
150 ASSERT (ptr == input + 2);
155 const char input[] = " 1";
157 double result = strtod (input, &ptr);
158 ASSERT (result == 1.0);
159 ASSERT (ptr == input + 2);
164 const char input[] = "+1";
166 double result = strtod (input, &ptr);
167 ASSERT (result == 1.0);
168 ASSERT (ptr == input + 2);
173 const char input[] = "-1";
175 double result = strtod (input, &ptr);
176 ASSERT (result == -1.0);
177 ASSERT (ptr == input + 2);
182 const char input[] = "1e0";
184 double result = strtod (input, &ptr);
185 ASSERT (result == 1.0);
186 ASSERT (ptr == input + 3);
191 const char input[] = "1e+0";
193 double result = strtod (input, &ptr);
194 ASSERT (result == 1.0);
195 ASSERT (ptr == input + 4);
200 const char input[] = "1e-0";
202 double result = strtod (input, &ptr);
203 ASSERT (result == 1.0);
204 ASSERT (ptr == input + 4);
209 const char input[] = "1e1";
211 double result = strtod (input, &ptr);
212 ASSERT (result == 10.0);
213 ASSERT (ptr == input + 3);
218 const char input[] = "5e-1";
220 double result = strtod (input, &ptr);
221 ASSERT (result == 0.5);
222 ASSERT (ptr == input + 4);
229 const char input[] = "0";
231 double result = strtod (input, &ptr);
232 ASSERT (result == 0.0);
233 ASSERT (!signbit (result));
234 ASSERT (ptr == input + 1);
239 const char input[] = ".0";
241 double result = strtod (input, &ptr);
242 ASSERT (result == 0.0);
243 ASSERT (!signbit (result));
244 ASSERT (ptr == input + 2);
249 const char input[] = "0e0";
251 double result = strtod (input, &ptr);
252 ASSERT (result == 0.0);
253 ASSERT (!signbit (result));
254 ASSERT (ptr == input + 3);
259 const char input[] = "0e+9999999";
261 double result = strtod (input, &ptr);
262 ASSERT (result == 0.0);
263 ASSERT (!signbit (result));
264 ASSERT (ptr == input + 10);
269 const char input[] = "0e-9999999";
271 double result = strtod (input, &ptr);
272 ASSERT (result == 0.0);
273 ASSERT (!signbit (result));
274 ASSERT (ptr == input + 10);
279 const char input[] = "-0";
281 double result = strtod (input, &ptr);
282 ASSERT (result == 0.0);
283 ASSERT (signbit (result) == signbit (-0.0));
284 ASSERT (ptr == input + 2);
291 const char input[] = "1f";
293 double result = strtod (input, &ptr);
294 ASSERT (result == 1.0);
295 ASSERT (ptr == input + 1);
300 const char input[] = "1.f";
302 double result = strtod (input, &ptr);
303 ASSERT (result == 1.0);
304 ASSERT (ptr == input + 2);
309 const char input[] = "1e";
311 double result = strtod (input, &ptr);
312 ASSERT (result == 1.0);
313 ASSERT (ptr == input + 1);
318 const char input[] = "1e+";
320 double result = strtod (input, &ptr);
321 ASSERT (result == 1.0);
322 ASSERT (ptr == input + 1);
327 const char input[] = "1e-";
329 double result = strtod (input, &ptr);
330 ASSERT (result == 1.0);
331 ASSERT (ptr == input + 1);
336 const char input[] = "1E 2";
338 double result = strtod (input, &ptr);
339 ASSERT (result == 1.0);
340 ASSERT (ptr == input + 1);
345 const char input[] = "0x";
347 double result = strtod (input, &ptr);
348 ASSERT (result == 0.0);
349 ASSERT (!signbit (result));
350 ASSERT (ptr == input + 1);
355 const char input[] = "00x1";
357 double result = strtod (input, &ptr);
358 ASSERT (result == 0.0);
359 ASSERT (!signbit (result));
360 ASSERT (ptr == input + 2);
365 const char input[] = "-0x";
367 double result = strtod (input, &ptr);
368 ASSERT (result == 0.0);
369 ASSERT (signbit (result) == signbit (-0.0));
370 ASSERT (ptr == input + 2);
375 const char input[] = "0xg";
377 double result = strtod (input, &ptr);
378 ASSERT (result == 0.0);
379 ASSERT (!signbit (result));
380 ASSERT (ptr == input + 1);
385 const char input[] = "0xp";
387 double result = strtod (input, &ptr);
388 ASSERT (result == 0.0);
389 ASSERT (!signbit (result));
390 ASSERT (ptr == input + 1);
395 const char input[] = "0x.";
397 double result = strtod (input, &ptr);
398 ASSERT (result == 0.0);
399 ASSERT (!signbit (result));
400 ASSERT (ptr == input + 1);
405 const char input[] = "0xp+";
407 double result = strtod (input, &ptr);
408 ASSERT (result == 0.0);
409 ASSERT (!signbit (result));
410 ASSERT (ptr == input + 1);
415 const char input[] = "0xp+1";
417 double result = strtod (input, &ptr);
418 ASSERT (result == 0.0);
419 ASSERT (!signbit (result));
420 ASSERT (ptr == input + 1);
425 const char input[] = "0x.p+1";
427 double result = strtod (input, &ptr);
428 ASSERT (result == 0.0);
429 ASSERT (!signbit (result));
430 ASSERT (ptr == input + 1);
435 const char input[] = "1p+1";
437 double result = strtod (input, &ptr);
438 ASSERT (result == 1.0);
439 ASSERT (ptr == input + 1);
443 /* Overflow/underflow. */
446 const char input[] = "1E1000000";
448 double result = strtod (input, &ptr);
449 ASSERT (result == HUGE_VAL);
450 ASSERT (ptr == input + 9);
451 ASSERT (errno == ERANGE);
455 const char input[] = "-1E1000000";
457 double result = strtod (input, &ptr);
458 ASSERT (result == -HUGE_VAL);
459 ASSERT (ptr == input + 10);
460 ASSERT (errno == ERANGE);
464 const char input[] = "1E-100000";
466 double result = strtod (input, &ptr);
467 ASSERT (0.0 <= result && result <= FLT_MIN);
468 ASSERT (!signbit (result));
469 ASSERT (ptr == input + 9);
470 ASSERT (errno == ERANGE);
474 const char input[] = "-1E-100000";
476 double result = strtod (input, &ptr);
477 ASSERT (-FLT_MIN <= result && result <= 0.0);
479 /* FIXME - this is glibc bug 5995; POSIX allows returning positive
480 0 on negative underflow, even though quality of implementation
481 demands preserving the sign. Disable this test until fixed
482 glibc is more prevalent. */
483 ASSERT (signbit (result) == signbit (-0.0));
485 ASSERT (ptr == input + 10);
486 ASSERT (errno == ERANGE);
492 const char input[] = "iNf";
494 double result = strtod (input, &ptr);
495 ASSERT (result == HUGE_VAL);
496 ASSERT (ptr == input + 3);
501 const char input[] = "-InF";
503 double result = strtod (input, &ptr);
504 ASSERT (result == -HUGE_VAL);
505 ASSERT (ptr == input + 4);
510 const char input[] = "infinite";
512 double result = strtod (input, &ptr);
513 ASSERT (result == HUGE_VAL);
514 ASSERT (ptr == input + 3);
519 const char input[] = "infinitY";
521 double result = strtod (input, &ptr);
522 ASSERT (result == HUGE_VAL);
523 ASSERT (ptr == input + 8);
528 const char input[] = "infinitY.";
530 double result = strtod (input, &ptr);
531 ASSERT (result == HUGE_VAL);
532 ASSERT (ptr == input + 8);
536 /* NaN. Some processors set the sign bit of the default NaN, so all
537 we check is that using a sign changes the result. */
540 const char input[] = "-nan";
543 double result1 = strtod (input, &ptr1);
544 double result2 = strtod (input + 1, &ptr2);
546 ASSERT (isnan (result1));
547 ASSERT (isnan (result2));
549 /* Sign bits of NaN is a portability sticking point, not worth
551 ASSERT (signbit (result1) != signbit (result2));
553 ASSERT (ptr1 == input + 4);
554 ASSERT (ptr2 == input + 4);
557 ASSERT (result1 == 0.0);
558 ASSERT (result2 == 0.0);
559 ASSERT (!signbit (result1));
560 ASSERT (!signbit (result2));
561 ASSERT (ptr1 == input);
562 ASSERT (ptr2 == input + 1);
563 ASSERT (errno == 0 || errno == EINVAL);
568 const char input[] = "+nan(";
571 double result1 = strtod (input, &ptr1);
572 double result2 = strtod (input + 1, &ptr2);
574 ASSERT (isnan (result1));
575 ASSERT (isnan (result2));
576 ASSERT (signbit (result1) == signbit (result2));
577 ASSERT (ptr1 == input + 4);
578 ASSERT (ptr2 == input + 4);
581 ASSERT (result1 == 0.0);
582 ASSERT (result2 == 0.0);
583 ASSERT (!signbit (result1));
584 ASSERT (!signbit (result2));
585 ASSERT (ptr1 == input);
586 ASSERT (ptr2 == input + 1);
587 ASSERT (errno == 0 || errno == EINVAL);
592 const char input[] = "-nan()";
595 double result1 = strtod (input, &ptr1);
596 double result2 = strtod (input + 1, &ptr2);
598 ASSERT (isnan (result1));
599 ASSERT (isnan (result2));
601 /* Sign bits of NaN is a portability sticking point, not worth
603 ASSERT (signbit (result1) != signbit (result2));
605 ASSERT (ptr1 == input + 6);
606 ASSERT (ptr2 == input + 6);
609 ASSERT (result1 == 0.0);
610 ASSERT (result2 == 0.0);
611 ASSERT (!signbit (result1));
612 ASSERT (!signbit (result2));
613 ASSERT (ptr1 == input);
614 ASSERT (ptr2 == input + 1);
615 ASSERT (errno == 0 || errno == EINVAL);
620 const char input[] = " nan().";
622 double result = strtod (input, &ptr);
624 ASSERT (isnan (result));
625 ASSERT (ptr == input + 6);
628 ASSERT (result == 0.0);
629 ASSERT (!signbit (result));
630 ASSERT (ptr == input);
631 ASSERT (errno == 0 || errno == EINVAL);
636 /* The behavior of nan(0) is implementation-defined, but all
637 implementations we know of which handle optional
638 n-char-sequences handle nan(0) the same as nan(). */
639 const char input[] = "-nan(0).";
642 double result1 = strtod (input, &ptr1);
643 double result2 = strtod (input + 1, &ptr2);
645 ASSERT (isnan (result1));
646 ASSERT (isnan (result2));
648 /* Sign bits of NaN is a portability sticking point, not worth
650 ASSERT (signbit (result1) != signbit (result2));
652 ASSERT (ptr1 == input + 7);
653 ASSERT (ptr2 == input + 7);
656 ASSERT (result1 == 0.0);
657 ASSERT (result2 == 0.0);
658 ASSERT (!signbit (result1));
659 ASSERT (!signbit (result2));
660 ASSERT (ptr1 == input);
661 ASSERT (ptr2 == input + 1);
662 ASSERT (errno == 0 || errno == EINVAL);
669 const char input[] = "0xa";
671 double result = strtod (input, &ptr);
672 ASSERT (result == 10.0);
673 ASSERT (ptr == input + 3);
678 const char input[] = "0XA";
680 double result = strtod (input, &ptr);
681 ASSERT (result == 10.0);
682 ASSERT (ptr == input + 3);
687 const char input[] = "0x1p";
689 double result = strtod (input, &ptr);
690 ASSERT (result == 1.0);
691 ASSERT (ptr == input + 3);
696 const char input[] = "0x1p+";
698 double result = strtod (input, &ptr);
699 ASSERT (result == 1.0);
700 ASSERT (ptr == input + 3);
705 const char input[] = "0x1p+1";
707 double result = strtod (input, &ptr);
708 ASSERT (result == 2.0);
709 ASSERT (ptr == input + 6);
714 const char input[] = "0x1p+1a";
716 double result = strtod (input, &ptr);
717 ASSERT (result == 2.0);
718 ASSERT (ptr == input + 6);
726 char *input = malloc (m + 1);
731 memset (input, '\t', m - 1);
734 result = strtod (input, &ptr);
735 ASSERT (result == 1.0);
736 ASSERT (ptr == input + m);
744 char *input = malloc (m + 1);
749 memset (input, '0', m - 1);
752 result = strtod (input, &ptr);
753 ASSERT (result == 1.0);
754 ASSERT (ptr == input + m);
760 /* Newlib has an artificial limit of 20000 for the exponent. TODO -
761 gnulib should fix this. */
765 char *input = malloc (m + 1);
771 memset (input + 1, '0', m - 10);
782 result = strtod (input, &ptr);
783 ASSERT (result == 1.0);
784 ASSERT (ptr == input + m);
792 char *input = malloc (m + 1);
798 memset (input + 1, '0', m - 9);
808 result = strtod (input, &ptr);
809 ASSERT (result == 1.0);
810 ASSERT (ptr == input + m);
819 char *input = malloc (m + 1);
828 memset (input + 4, '0', m - 3);
830 result = strtod (input, &ptr);
831 ASSERT (result == 0.0);
832 ASSERT (signbit (result) == signbit (-0.0));
833 ASSERT (ptr == input + m);
840 /* TODO - is it worth some tests of rounding for typical IEEE corner
841 cases, such as .5 ULP rounding up to the smallest denormal and
842 not causing underflow, or FLT_MIN - .5 ULP not causing an