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[] = ".1";
148 double result = strtod (input, &ptr);
149 ASSERT (result == 0.1);
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[] = "1e-1";
220 double result = strtod (input, &ptr);
221 ASSERT (result == 0.1);
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[] = "0x";
338 double result = strtod (input, &ptr);
339 ASSERT (result == 0.0);
340 ASSERT (!signbit (result));
341 ASSERT (ptr == input + 1);
346 const char input[] = "00x1";
348 double result = strtod (input, &ptr);
349 ASSERT (result == 0.0);
350 ASSERT (!signbit (result));
351 ASSERT (ptr == input + 2);
356 const char input[] = "-0x";
358 double result = strtod (input, &ptr);
359 ASSERT (result == 0.0);
360 ASSERT (signbit (result) == signbit (-0.0));
361 ASSERT (ptr == input + 2);
366 const char input[] = "0xg";
368 double result = strtod (input, &ptr);
369 ASSERT (result == 0.0);
370 ASSERT (!signbit (result));
371 ASSERT (ptr == input + 1);
376 const char input[] = "0xp";
378 double result = strtod (input, &ptr);
379 ASSERT (result == 0.0);
380 ASSERT (!signbit (result));
381 ASSERT (ptr == input + 1);
386 const char input[] = "0x.";
388 double result = strtod (input, &ptr);
389 ASSERT (result == 0.0);
390 ASSERT (!signbit (result));
391 ASSERT (ptr == input + 1);
396 const char input[] = "0xp+";
398 double result = strtod (input, &ptr);
399 ASSERT (result == 0.0);
400 ASSERT (!signbit (result));
401 ASSERT (ptr == input + 1);
406 const char input[] = "0xp+1";
408 double result = strtod (input, &ptr);
409 ASSERT (result == 0.0);
410 ASSERT (!signbit (result));
411 ASSERT (ptr == input + 1);
416 const char input[] = "0x.p+1";
418 double result = strtod (input, &ptr);
419 ASSERT (result == 0.0);
420 ASSERT (!signbit (result));
421 ASSERT (ptr == input + 1);
426 const char input[] = "1p+1";
428 double result = strtod (input, &ptr);
429 ASSERT (result == 1.0);
430 ASSERT (ptr == input + 1);
434 /* Overflow/underflow. */
437 const char input[] = "1E100000";
439 double result = strtod (input, &ptr);
440 ASSERT (result == HUGE_VAL);
441 ASSERT (ptr == input + 8);
442 ASSERT (errno == ERANGE);
446 const char input[] = "-1E100000";
448 double result = strtod (input, &ptr);
449 ASSERT (result == -HUGE_VAL);
450 ASSERT (ptr == input + 9);
451 ASSERT (errno == ERANGE);
455 const char input[] = "1E-100000";
457 double result = strtod (input, &ptr);
458 ASSERT (0.0 <= result && result <= FLT_MIN);
459 ASSERT (!signbit (result));
460 ASSERT (ptr == input + 9);
461 ASSERT (errno == ERANGE);
465 const char input[] = "-1E-100000";
467 double result = strtod (input, &ptr);
468 ASSERT (-FLT_MIN <= result && result <= 0.0);
469 ASSERT (signbit (result) == signbit (-0.0));
470 ASSERT (ptr == input + 10);
471 ASSERT (errno == ERANGE);
477 const char input[] = "iNf";
479 double result = strtod (input, &ptr);
480 ASSERT (result == HUGE_VAL);
481 ASSERT (ptr == input + 3);
486 const char input[] = "-InF";
488 double result = strtod (input, &ptr);
489 ASSERT (result == -HUGE_VAL);
490 ASSERT (ptr == input + 4);
495 const char input[] = "infinite";
497 double result = strtod (input, &ptr);
498 ASSERT (result == HUGE_VAL);
499 ASSERT (ptr == input + 3);
504 const char input[] = "infinitY";
506 double result = strtod (input, &ptr);
507 ASSERT (result == HUGE_VAL);
508 ASSERT (ptr == input + 8);
513 const char input[] = "infinitY.";
515 double result = strtod (input, &ptr);
516 ASSERT (result == HUGE_VAL);
517 ASSERT (ptr == input + 8);
521 /* NaN. Some processors set the sign bit of the default NaN, so all
522 we check is that using a sign changes the result. */
525 const char input[] = "-nan";
528 double result1 = strtod (input, &ptr1);
529 double result2 = strtod (input + 1, &ptr2);
531 ASSERT (isnan (result1));
532 ASSERT (isnan (result2));
533 ASSERT (signbit (result1) != signbit (result2));
534 ASSERT (ptr1 == input + 4);
535 ASSERT (ptr2 == input + 4);
538 ASSERT (result1 == 0.0);
539 ASSERT (result2 == 0.0);
540 ASSERT (!signbit (result1));
541 ASSERT (!signbit (result2));
542 ASSERT (ptr1 == input);
543 ASSERT (ptr2 == input + 1);
544 ASSERT (errno == 0 || errno == EINVAL);
549 const char input[] = "+nan(";
552 double result1 = strtod (input, &ptr1);
553 double result2 = strtod (input + 1, &ptr2);
555 ASSERT (isnan (result1));
556 ASSERT (isnan (result2));
557 ASSERT (signbit (result1) == signbit (result2));
558 ASSERT (ptr1 == input + 4);
559 ASSERT (ptr2 == input + 4);
562 ASSERT (result1 == 0.0);
563 ASSERT (result2 == 0.0);
564 ASSERT (!signbit (result1));
565 ASSERT (!signbit (result2));
566 ASSERT (ptr1 == input);
567 ASSERT (ptr2 == input + 1);
568 ASSERT (errno == 0 || errno == EINVAL);
573 const char input[] = "-nan()";
576 double result1 = strtod (input, &ptr1);
577 double result2 = strtod (input + 1, &ptr2);
579 ASSERT (isnan (result1));
580 ASSERT (isnan (result2));
581 ASSERT (signbit (result1) != signbit (result2));
582 ASSERT (ptr1 == input + 6);
583 ASSERT (ptr2 == input + 6);
586 ASSERT (result1 == 0.0);
587 ASSERT (result2 == 0.0);
588 ASSERT (!signbit (result1));
589 ASSERT (!signbit (result2));
590 ASSERT (ptr1 == input);
591 ASSERT (ptr2 == input + 1);
592 ASSERT (errno == 0 || errno == EINVAL);
597 const char input[] = " nan().";
599 double result = strtod (input, &ptr);
601 ASSERT (isnan (result));
602 ASSERT (ptr == input + 6);
605 ASSERT (result == 0.0);
606 ASSERT (!signbit (result));
607 ASSERT (ptr == input);
608 ASSERT (errno == 0 || errno == EINVAL);
613 /* The behavior of nan(0) is implementation-defined, but all
614 implementations we know of which handle optional
615 n-char-sequences handle nan(0) the same as nan(). */
616 const char input[] = "-nan(0).";
619 double result1 = strtod (input, &ptr1);
620 double result2 = strtod (input + 1, &ptr2);
622 ASSERT (isnan (result1));
623 ASSERT (isnan (result2));
624 ASSERT (signbit (result1) != signbit (result2));
625 ASSERT (ptr1 == input + 7);
626 ASSERT (ptr2 == input + 7);
629 ASSERT (result1 == 0.0);
630 ASSERT (result2 == 0.0);
631 ASSERT (!signbit (result1));
632 ASSERT (!signbit (result2));
633 ASSERT (ptr1 == input);
634 ASSERT (ptr2 == input + 1);
635 ASSERT (errno == 0 || errno == EINVAL);
641 /* TODO - gnulib doesn't implement this yet. */
644 const char input[] = "0xa";
646 double result = strtod (input, &ptr);
647 ASSERT (result == 10.0);
648 ASSERT (ptr == input + 3);
653 const char input[] = "0XA";
655 double result = strtod (input, &ptr);
656 ASSERT (result == 10.0);
657 ASSERT (ptr == input + 3);
662 const char input[] = "0x1p";
664 double result = strtod (input, &ptr);
665 ASSERT (result == 1.0);
666 ASSERT (ptr == input + 3);
671 const char input[] = "0x1p+";
673 double result = strtod (input, &ptr);
674 ASSERT (result == 1.0);
675 ASSERT (ptr == input + 3);
680 const char input[] = "0x1p+1";
682 double result = strtod (input, &ptr);
683 ASSERT (result == 2.0);
684 ASSERT (ptr == input + 6);
689 const char input[] = "0x1p+1a";
691 double result = strtod (input, &ptr);
692 ASSERT (result == 2.0);
693 ASSERT (ptr == input + 6);
702 char *input = malloc (m + 1);
707 memset (input, '\t', m - 1);
710 result = strtod (input, &ptr);
711 ASSERT (result == 1.0);
712 ASSERT (ptr == input + m);
720 char *input = malloc (m + 1);
725 memset (input, '0', m - 1);
728 result = strtod (input, &ptr);
729 ASSERT (result == 1.0);
730 ASSERT (ptr == input + m);
736 /* Newlib has an artificial limit of 20000 for the exponent. TODO -
737 gnulib should fix this. */
741 char *input = malloc (m + 1);
747 memset (input + 1, '0', m - 10);
758 result = strtod (input, &ptr);
759 ASSERT (result == 1.0);
760 ASSERT (ptr == input + m);
768 char *input = malloc (m + 1);
774 memset (input + 1, '0', m - 9);
784 result = strtod (input, &ptr);
785 ASSERT (result == 1.0);
786 ASSERT (ptr == input + m);
795 char *input = malloc (m + 1);
804 memset (input + 4, '0', m - 3);
806 result = strtod (input, &ptr);
807 ASSERT (result == 0.0);
808 ASSERT (signbit (result) == signbit (-0.0));
809 ASSERT (ptr == input + m);
816 /* TODO - is it worth some tests of rounding for typical IEEE corner
817 cases, such as .5 ULP rounding up to the smallest denormal and
818 not causing underflow, or FLT_MIN - .5 ULP not causing an