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1 | /* Support code for testing libm functions (compiled once per type). |
2 | Copyright (C) 1997-2017 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | /* Part of testsuite for libm. | |
20 | ||
21 | libm-test-support.c contains functions shared by tests of different | |
22 | libm functions and types; it is compiled once per type. | |
23 | libm-test-driver.c defines the main function, and various variables | |
24 | that are used to configure the code in libm-test-support.c for | |
25 | different types and for variants such as testing inline functions. | |
26 | ||
27 | The tests of individual functions are in .inc files processed by | |
28 | gen-libm-test.pl, with the resulting files included together with | |
29 | libm-test-driver.c. | |
30 | ||
31 | The per-type headers included both before libm-test-support.c and | |
32 | for the tests of individual functions must define the following | |
33 | macros: | |
34 | ||
35 | FUNC(function): Convert general function name (like cos) to name | |
36 | with correct suffix (e.g. cosl or cosf). | |
37 | ||
38 | FLOAT: Floating-point type to test. | |
39 | ||
40 | BUILD_COMPLEX(real, imag): Create a complex number by calling a | |
41 | macro such as CMPLX. | |
42 | ||
43 | PREFIX: The prefix for <float.h> macros for the type (e.g. LDBL, | |
44 | DBL, or FLT). | |
45 | ||
46 | TYPE_STR: The name of the type as used in ulps files, as a string. | |
47 | ||
48 | LIT: Append the correct suffix to a literal. | |
49 | ||
50 | LITM: Append the correct suffix to an M_* macro name. | |
51 | ||
52 | FTOSTR: A function similar in type to strfromf which converts a | |
53 | FLOAT to a string. | |
54 | ||
55 | snan_value_MACRO: The macro such as SNAN for a signaling NaN for | |
56 | the type. | |
57 | ||
58 | */ | |
59 | ||
60 | /* Parameter handling is primitive in the moment: | |
61 | --verbose=[0..3] for different levels of output: | |
62 | 0: only error count | |
63 | 1: basic report on failed tests (default) | |
64 | 2: full report on all tests | |
65 | -v for full output (equals --verbose=3) | |
66 | -u for generation of an ULPs file | |
67 | */ | |
68 | ||
69 | /* "Philosophy": | |
70 | ||
71 | This suite tests some aspects of the correct implementation of | |
72 | mathematical functions in libm. Some simple, specific parameters | |
73 | are tested for correctness but there's no exhaustive | |
74 | testing. Handling of specific inputs (e.g. infinity, not-a-number) | |
75 | is also tested. Correct handling of exceptions is checked | |
76 | against. These implemented tests should check all cases that are | |
77 | specified in ISO C99. | |
78 | ||
79 | NaN values: The payload of NaNs is set in inputs for functions | |
80 | where it is significant, and is examined in the outputs of some | |
81 | functions. | |
82 | ||
83 | Inline functions: Inlining functions should give an improvement in | |
84 | speed - but not in precission. The inlined functions return | |
85 | reasonable values for a reasonable range of input values. The | |
86 | result is not necessarily correct for all values and exceptions are | |
87 | not correctly raised in all cases. Problematic input and return | |
88 | values are infinity, not-a-number and minus zero. This suite | |
89 | therefore does not check these specific inputs and the exception | |
90 | handling for inlined mathematical functions - just the "reasonable" | |
91 | values are checked. | |
92 | ||
93 | Beware: The tests might fail for any of the following reasons: | |
94 | - Tests are wrong | |
95 | - Functions are wrong | |
96 | - Floating Point Unit not working properly | |
97 | - Compiler has errors | |
98 | ||
99 | With e.g. gcc 2.7.2.2 the test for cexp fails because of a compiler error. | |
100 | ||
101 | ||
102 | To Do: All parameter should be numbers that can be represented as | |
103 | exact floating point values. Currently some values cannot be | |
104 | represented exactly and therefore the result is not the expected | |
105 | result. For this we will use 36 digits so that numbers can be | |
106 | represented exactly. */ | |
107 | ||
108 | #include "libm-test-support.h" | |
109 | ||
110 | #include <argp.h> | |
111 | #include <errno.h> | |
112 | #include <string.h> | |
113 | ||
114 | /* This header defines func_ulps, func_real_ulps and func_imag_ulps | |
115 | arrays. */ | |
116 | #include "libm-test-ulps.h" | |
117 | ||
118 | /* Maximum character buffer to store a stringitized FLOAT value. */ | |
119 | #define FSTR_MAX (128) | |
120 | ||
121 | #define ulps_file_name "ULPs" /* Name of the ULPs file. */ | |
122 | static FILE *ulps_file; /* File to document difference. */ | |
123 | static int output_ulps; /* Should ulps printed? */ | |
124 | static char *output_dir; /* Directory where generated files will be written. */ | |
125 | ||
126 | static int noErrors; /* number of errors */ | |
127 | static int noTests; /* number of tests (without testing exceptions) */ | |
128 | static int noExcTests; /* number of tests for exception flags */ | |
129 | static int noErrnoTests;/* number of tests for errno values */ | |
130 | ||
131 | static int verbose; | |
132 | static int output_max_error; /* Should the maximal errors printed? */ | |
133 | static int output_points; /* Should the single function results printed? */ | |
134 | static int ignore_max_ulp; /* Should we ignore max_ulp? */ | |
135 | ||
136 | static FLOAT max_error, real_max_error, imag_max_error; | |
137 | ||
138 | static FLOAT prev_max_error, prev_real_max_error, prev_imag_max_error; | |
139 | ||
140 | static FLOAT max_valid_error; | |
141 | ||
142 | /* Sufficient numbers of digits to represent any floating-point value | |
143 | unambiguously (for any choice of the number of bits in the first | |
144 | hex digit, in the case of TYPE_HEX_DIG). When used with printf | |
145 | formats where the precision counts only digits after the point, 1 | |
146 | is subtracted from these values. */ | |
147 | #define TYPE_DECIMAL_DIG __CONCATX (PREFIX, _DECIMAL_DIG) | |
148 | #define TYPE_HEX_DIG ((MANT_DIG + 6) / 4) | |
149 | ||
150 | /* Converts VALUE (a floating-point number) to string and writes it to DEST. | |
151 | PRECISION specifies the number of fractional digits that should be printed. | |
152 | CONVERSION is the conversion specifier, such as in printf, e.g. 'f' or 'a'. | |
153 | The output is prepended with an empty space if VALUE is non-negative. */ | |
154 | static void | |
155 | fmt_ftostr (char *dest, size_t size, int precision, const char *conversion, | |
156 | FLOAT value) | |
157 | { | |
158 | char format[64]; | |
159 | char *ptr_format; | |
160 | int ret; | |
161 | ||
162 | /* Generate the format string. */ | |
163 | ptr_format = stpcpy (format, "%."); | |
164 | ret = sprintf (ptr_format, "%d", precision); | |
165 | ptr_format += ret; | |
166 | ptr_format = stpcpy (ptr_format, conversion); | |
167 | ||
168 | /* Add a space to the beginning of the output string, if the floating-point | |
169 | number is non-negative. This mimics the behavior of the space (' ') flag | |
170 | in snprintf, which is not available on strfrom. */ | |
171 | if (! signbit (value)) | |
172 | { | |
173 | *dest = ' '; | |
174 | dest++; | |
175 | size--; | |
176 | } | |
177 | ||
178 | /* Call the float to string conversion function, e.g.: strfromd. */ | |
179 | FTOSTR (dest, size, format, value); | |
180 | } | |
181 | ||
182 | /* Compare KEY (a string, with the name of a function) with ULP (a | |
183 | pointer to a struct ulp_data structure), returning a value less | |
184 | than, equal to or greater than zero for use in bsearch. */ | |
185 | ||
186 | static int | |
187 | compare_ulp_data (const void *key, const void *ulp) | |
188 | { | |
189 | const char *keystr = key; | |
190 | const struct ulp_data *ulpdat = ulp; | |
191 | return strcmp (keystr, ulpdat->name); | |
192 | } | |
193 | ||
194 | static const int ulp_i_idx = __CONCATX (ULP_I_, PREFIX); | |
195 | static const int ulp_idx = __CONCATX (ULP_, PREFIX); | |
196 | ||
197 | /* Return the ulps for NAME in array DATA with NMEMB elements, or 0 if | |
198 | no ulps listed. */ | |
199 | ||
200 | static FLOAT | |
201 | find_ulps (const char *name, const struct ulp_data *data, size_t nmemb) | |
202 | { | |
203 | const struct ulp_data *entry = bsearch (name, data, nmemb, sizeof (*data), | |
204 | compare_ulp_data); | |
205 | if (entry == NULL) | |
206 | return 0; | |
207 | else | |
208 | return entry->max_ulp[(flag_test_inline ? ulp_i_idx : ulp_idx)]; | |
209 | } | |
210 | ||
211 | void | |
212 | init_max_error (const char *name, int exact) | |
213 | { | |
214 | max_error = 0; | |
215 | real_max_error = 0; | |
216 | imag_max_error = 0; | |
217 | prev_max_error = find_ulps (name, func_ulps, | |
218 | sizeof (func_ulps) / sizeof (func_ulps[0])); | |
219 | prev_real_max_error = find_ulps (name, func_real_ulps, | |
220 | (sizeof (func_real_ulps) | |
221 | / sizeof (func_real_ulps[0]))); | |
222 | prev_imag_max_error = find_ulps (name, func_imag_ulps, | |
223 | (sizeof (func_imag_ulps) | |
224 | / sizeof (func_imag_ulps[0]))); | |
225 | #if TEST_COND_ibm128 | |
226 | /* The documented accuracy of IBM long double division is 3ulp (see | |
227 | libgcc/config/rs6000/ibm-ldouble-format), so do not require | |
228 | better accuracy for libm functions that are exactly defined for | |
229 | other formats. */ | |
230 | max_valid_error = exact ? 3 : 16; | |
231 | #else | |
232 | max_valid_error = exact ? 0 : 9; | |
233 | #endif | |
234 | prev_max_error = (prev_max_error <= max_valid_error | |
235 | ? prev_max_error | |
236 | : max_valid_error); | |
237 | prev_real_max_error = (prev_real_max_error <= max_valid_error | |
238 | ? prev_real_max_error | |
239 | : max_valid_error); | |
240 | prev_imag_max_error = (prev_imag_max_error <= max_valid_error | |
241 | ? prev_imag_max_error | |
242 | : max_valid_error); | |
243 | feclearexcept (FE_ALL_EXCEPT); | |
244 | errno = 0; | |
245 | } | |
246 | ||
247 | static void | |
248 | set_max_error (FLOAT current, FLOAT *curr_max_error) | |
249 | { | |
250 | if (current > *curr_max_error && current <= max_valid_error) | |
251 | *curr_max_error = current; | |
252 | } | |
253 | ||
254 | ||
255 | /* Print a FLOAT. */ | |
256 | static void | |
257 | print_float (FLOAT f) | |
258 | { | |
259 | /* As printf doesn't differ between a sNaN and a qNaN, do this manually. */ | |
260 | if (issignaling (f)) | |
261 | printf ("sNaN\n"); | |
262 | else if (isnan (f)) | |
263 | printf ("qNaN\n"); | |
264 | else | |
265 | { | |
266 | char fstrn[FSTR_MAX], fstrx[FSTR_MAX]; | |
267 | fmt_ftostr (fstrn, FSTR_MAX, TYPE_DECIMAL_DIG - 1, "e", f); | |
268 | fmt_ftostr (fstrx, FSTR_MAX, TYPE_HEX_DIG - 1, "a", f); | |
269 | printf ("%s %s\n", fstrn, fstrx); | |
270 | } | |
271 | } | |
272 | ||
273 | /* Should the message print to screen? This depends on the verbose flag, | |
274 | and the test status. */ | |
275 | static int | |
276 | print_screen (int ok) | |
277 | { | |
278 | if (output_points | |
279 | && (verbose > 1 | |
280 | || (verbose == 1 && ok == 0))) | |
281 | return 1; | |
282 | return 0; | |
283 | } | |
284 | ||
285 | ||
286 | /* Should the message print to screen? This depends on the verbose flag, | |
287 | and the test status. */ | |
288 | static int | |
289 | print_screen_max_error (int ok) | |
290 | { | |
291 | if (output_max_error | |
292 | && (verbose > 1 | |
293 | || ((verbose == 1) && (ok == 0)))) | |
294 | return 1; | |
295 | return 0; | |
296 | } | |
297 | ||
298 | /* Update statistic counters. */ | |
299 | static void | |
300 | update_stats (int ok) | |
301 | { | |
302 | ++noTests; | |
303 | if (!ok) | |
304 | ++noErrors; | |
305 | } | |
306 | ||
307 | static void | |
308 | print_function_ulps (const char *function_name, FLOAT ulp) | |
309 | { | |
310 | if (output_ulps) | |
311 | { | |
312 | char ustrn[FSTR_MAX]; | |
313 | FTOSTR (ustrn, FSTR_MAX, "%.0f", FUNC (ceil) (ulp)); | |
314 | fprintf (ulps_file, "Function: \"%s\":\n", function_name); | |
315 | fprintf (ulps_file, "%s: %s\n", qtype_str, ustrn); | |
316 | } | |
317 | } | |
318 | ||
319 | ||
320 | static void | |
321 | print_complex_function_ulps (const char *function_name, FLOAT real_ulp, | |
322 | FLOAT imag_ulp) | |
323 | { | |
324 | if (output_ulps) | |
325 | { | |
326 | char fstrn[FSTR_MAX]; | |
327 | if (real_ulp != 0.0) | |
328 | { | |
329 | FTOSTR (fstrn, FSTR_MAX, "%.0f", FUNC (ceil) (real_ulp)); | |
330 | fprintf (ulps_file, "Function: Real part of \"%s\":\n", function_name); | |
331 | fprintf (ulps_file, "%s: %s\n", qtype_str, fstrn); | |
332 | } | |
333 | if (imag_ulp != 0.0) | |
334 | { | |
335 | FTOSTR (fstrn, FSTR_MAX, "%.0f", FUNC (ceil) (imag_ulp)); | |
336 | fprintf (ulps_file, "Function: Imaginary part of \"%s\":\n", function_name); | |
337 | fprintf (ulps_file, "%s: %s\n", qtype_str, fstrn); | |
338 | } | |
339 | ||
340 | ||
341 | } | |
342 | } | |
343 | ||
344 | ||
345 | ||
346 | /* Test if Floating-Point stack hasn't changed */ | |
347 | static void | |
348 | fpstack_test (const char *test_name) | |
349 | { | |
350 | #if defined (__i386__) || defined (__x86_64__) | |
351 | static int old_stack; | |
352 | int sw; | |
353 | ||
354 | asm ("fnstsw" : "=a" (sw)); | |
355 | sw >>= 11; | |
356 | sw &= 7; | |
357 | ||
358 | if (sw != old_stack) | |
359 | { | |
360 | printf ("FP-Stack wrong after test %s (%d, should be %d)\n", | |
361 | test_name, sw, old_stack); | |
362 | ++noErrors; | |
363 | old_stack = sw; | |
364 | } | |
365 | #endif | |
366 | } | |
367 | ||
368 | ||
369 | void | |
370 | print_max_error (const char *func_name) | |
371 | { | |
372 | int ok = 0; | |
373 | ||
374 | if (max_error == 0.0 || (max_error <= prev_max_error && !ignore_max_ulp)) | |
375 | { | |
376 | ok = 1; | |
377 | } | |
378 | ||
379 | if (!ok) | |
380 | print_function_ulps (func_name, max_error); | |
381 | ||
382 | ||
383 | if (print_screen_max_error (ok)) | |
384 | { | |
385 | char mestr[FSTR_MAX], pmestr[FSTR_MAX]; | |
386 | FTOSTR (mestr, FSTR_MAX, "%.0f", FUNC (ceil) (max_error)); | |
387 | FTOSTR (pmestr, FSTR_MAX, "%.0f", FUNC (ceil) (prev_max_error)); | |
388 | printf ("Maximal error of `%s'\n", func_name); | |
389 | printf (" is : %s ulp\n", mestr); | |
390 | printf (" accepted: %s ulp\n", pmestr); | |
391 | } | |
392 | ||
393 | update_stats (ok); | |
394 | } | |
395 | ||
396 | ||
397 | void | |
398 | print_complex_max_error (const char *func_name) | |
399 | { | |
400 | int real_ok = 0, imag_ok = 0, ok; | |
401 | ||
402 | if (real_max_error == 0 | |
403 | || (real_max_error <= prev_real_max_error && !ignore_max_ulp)) | |
404 | { | |
405 | real_ok = 1; | |
406 | } | |
407 | ||
408 | if (imag_max_error == 0 | |
409 | || (imag_max_error <= prev_imag_max_error && !ignore_max_ulp)) | |
410 | { | |
411 | imag_ok = 1; | |
412 | } | |
413 | ||
414 | ok = real_ok && imag_ok; | |
415 | ||
416 | if (!ok) | |
417 | print_complex_function_ulps (func_name, | |
418 | real_ok ? 0 : real_max_error, | |
419 | imag_ok ? 0 : imag_max_error); | |
420 | ||
421 | if (print_screen_max_error (ok)) | |
422 | { | |
423 | char rmestr[FSTR_MAX], prmestr[FSTR_MAX]; | |
424 | char imestr[FSTR_MAX], pimestr[FSTR_MAX]; | |
425 | FTOSTR (rmestr, FSTR_MAX, "%.0f", FUNC (ceil) (real_max_error)); | |
426 | FTOSTR (prmestr, FSTR_MAX, "%.0f", FUNC (ceil) (prev_real_max_error)); | |
427 | FTOSTR (imestr, FSTR_MAX, "%.0f", FUNC (ceil) (imag_max_error)); | |
428 | FTOSTR (pimestr, FSTR_MAX, "%.0f", FUNC (ceil) (prev_imag_max_error)); | |
429 | printf ("Maximal error of real part of: %s\n", func_name); | |
430 | printf (" is : %s ulp\n", rmestr); | |
431 | printf (" accepted: %s ulp\n", prmestr); | |
432 | printf ("Maximal error of imaginary part of: %s\n", func_name); | |
433 | printf (" is : %s ulp\n", imestr); | |
434 | printf (" accepted: %s ulp\n", pimestr); | |
435 | } | |
436 | ||
437 | update_stats (ok); | |
438 | } | |
439 | ||
440 | ||
441 | #if FE_ALL_EXCEPT | |
442 | /* Test whether a given exception was raised. */ | |
443 | static void | |
444 | test_single_exception (const char *test_name, | |
445 | int exception, | |
446 | int exc_flag, | |
447 | int fe_flag, | |
448 | const char *flag_name) | |
449 | { | |
450 | int ok = 1; | |
451 | if (exception & exc_flag) | |
452 | { | |
453 | if (fetestexcept (fe_flag)) | |
454 | { | |
455 | if (print_screen (1)) | |
456 | printf ("Pass: %s: Exception \"%s\" set\n", test_name, flag_name); | |
457 | } | |
458 | else | |
459 | { | |
460 | ok = 0; | |
461 | if (print_screen (0)) | |
462 | printf ("Failure: %s: Exception \"%s\" not set\n", | |
463 | test_name, flag_name); | |
464 | } | |
465 | } | |
466 | else | |
467 | { | |
468 | if (fetestexcept (fe_flag)) | |
469 | { | |
470 | ok = 0; | |
471 | if (print_screen (0)) | |
472 | printf ("Failure: %s: Exception \"%s\" set\n", | |
473 | test_name, flag_name); | |
474 | } | |
475 | else | |
476 | { | |
477 | if (print_screen (1)) | |
478 | printf ("%s: Exception \"%s\" not set\n", test_name, | |
479 | flag_name); | |
480 | } | |
481 | } | |
482 | if (!ok) | |
483 | ++noErrors; | |
484 | } | |
485 | #endif | |
486 | ||
487 | /* Test whether exceptions given by EXCEPTION are raised. Ignore thereby | |
488 | allowed but not required exceptions. | |
489 | */ | |
490 | static void | |
491 | test_exceptions (const char *test_name, int exception) | |
492 | { | |
493 | if (flag_test_exceptions && EXCEPTION_TESTS (FLOAT)) | |
494 | { | |
495 | ++noExcTests; | |
496 | #ifdef FE_DIVBYZERO | |
497 | if ((exception & DIVIDE_BY_ZERO_EXCEPTION_OK) == 0) | |
498 | test_single_exception (test_name, exception, | |
499 | DIVIDE_BY_ZERO_EXCEPTION, FE_DIVBYZERO, | |
500 | "Divide by zero"); | |
501 | #endif | |
502 | #ifdef FE_INVALID | |
503 | if ((exception & INVALID_EXCEPTION_OK) == 0) | |
504 | test_single_exception (test_name, exception, | |
505 | INVALID_EXCEPTION, FE_INVALID, | |
506 | "Invalid operation"); | |
507 | #endif | |
508 | #ifdef FE_OVERFLOW | |
509 | if ((exception & OVERFLOW_EXCEPTION_OK) == 0) | |
510 | test_single_exception (test_name, exception, OVERFLOW_EXCEPTION, | |
511 | FE_OVERFLOW, "Overflow"); | |
512 | #endif | |
513 | /* Spurious "underflow" and "inexact" exceptions are always | |
514 | allowed for IBM long double, in line with the underlying | |
515 | arithmetic. */ | |
516 | #ifdef FE_UNDERFLOW | |
517 | if ((exception & UNDERFLOW_EXCEPTION_OK) == 0 | |
518 | && !(TEST_COND_ibm128 | |
519 | && (exception & UNDERFLOW_EXCEPTION) == 0)) | |
520 | test_single_exception (test_name, exception, UNDERFLOW_EXCEPTION, | |
521 | FE_UNDERFLOW, "Underflow"); | |
522 | #endif | |
523 | #ifdef FE_INEXACT | |
524 | if ((exception & (INEXACT_EXCEPTION | NO_INEXACT_EXCEPTION)) != 0 | |
525 | && !(TEST_COND_ibm128 | |
526 | && (exception & NO_INEXACT_EXCEPTION) != 0)) | |
527 | test_single_exception (test_name, exception, INEXACT_EXCEPTION, | |
528 | FE_INEXACT, "Inexact"); | |
529 | #endif | |
530 | } | |
531 | feclearexcept (FE_ALL_EXCEPT); | |
532 | } | |
533 | ||
534 | /* Test whether errno for TEST_NAME, set to ERRNO_VALUE, has value | |
535 | EXPECTED_VALUE (description EXPECTED_NAME). */ | |
536 | static void | |
537 | test_single_errno (const char *test_name, int errno_value, | |
538 | int expected_value, const char *expected_name) | |
539 | { | |
540 | if (errno_value == expected_value) | |
541 | { | |
542 | if (print_screen (1)) | |
543 | printf ("Pass: %s: errno set to %d (%s)\n", test_name, errno_value, | |
544 | expected_name); | |
545 | } | |
546 | else | |
547 | { | |
548 | ++noErrors; | |
549 | if (print_screen (0)) | |
550 | printf ("Failure: %s: errno set to %d, expected %d (%s)\n", | |
551 | test_name, errno_value, expected_value, expected_name); | |
552 | } | |
553 | } | |
554 | ||
555 | /* Test whether errno (value ERRNO_VALUE) has been for TEST_NAME set | |
556 | as required by EXCEPTIONS. */ | |
557 | static void | |
558 | test_errno (const char *test_name, int errno_value, int exceptions) | |
559 | { | |
560 | if (flag_test_errno) | |
561 | { | |
562 | ++noErrnoTests; | |
563 | if (exceptions & ERRNO_UNCHANGED) | |
564 | test_single_errno (test_name, errno_value, 0, "unchanged"); | |
565 | if (exceptions & ERRNO_EDOM) | |
566 | test_single_errno (test_name, errno_value, EDOM, "EDOM"); | |
567 | if (exceptions & ERRNO_ERANGE) | |
568 | test_single_errno (test_name, errno_value, ERANGE, "ERANGE"); | |
569 | } | |
570 | } | |
571 | ||
572 | /* Returns the number of ulps that GIVEN is away from EXPECTED. */ | |
573 | #define ULPDIFF(given, expected) \ | |
574 | (FUNC(fabs) ((given) - (expected)) / ulp (expected)) | |
575 | ||
576 | /* Returns the size of an ulp for VALUE. */ | |
577 | static FLOAT | |
578 | ulp (FLOAT value) | |
579 | { | |
580 | FLOAT ulp; | |
581 | ||
582 | switch (fpclassify (value)) | |
583 | { | |
584 | case FP_ZERO: | |
585 | /* We compute the distance to the next FP which is the same as the | |
586 | value of the smallest subnormal number. Previously we used | |
587 | 2^-(MANT_DIG - 1) which is too large a value to be useful. Note that we | |
588 | can't use ilogb(0), since that isn't a valid thing to do. As a point | |
589 | of comparison Java's ulp returns the next normal value e.g. | |
590 | 2^(1 - MAX_EXP) for ulp(0), but that is not what we want for | |
591 | glibc. */ | |
592 | /* Fall through... */ | |
593 | case FP_SUBNORMAL: | |
594 | /* The next closest subnormal value is a constant distance away. */ | |
595 | ulp = FUNC(ldexp) (1.0, MIN_EXP - MANT_DIG); | |
596 | break; | |
597 | ||
598 | case FP_NORMAL: | |
599 | ulp = FUNC(ldexp) (1.0, FUNC(ilogb) (value) - MANT_DIG + 1); | |
600 | break; | |
601 | ||
602 | default: | |
603 | /* It should never happen. */ | |
604 | abort (); | |
605 | break; | |
606 | } | |
607 | return ulp; | |
608 | } | |
609 | ||
610 | static void | |
611 | check_float_internal (const char *test_name, FLOAT computed, FLOAT expected, | |
612 | int exceptions, | |
613 | FLOAT *curr_max_error, FLOAT max_ulp) | |
614 | { | |
615 | int ok = 0; | |
616 | int print_diff = 0; | |
617 | FLOAT diff = 0; | |
618 | FLOAT ulps = 0; | |
619 | int errno_value = errno; | |
620 | ||
621 | test_exceptions (test_name, exceptions); | |
622 | test_errno (test_name, errno_value, exceptions); | |
623 | if (exceptions & IGNORE_RESULT) | |
624 | goto out; | |
625 | if (issignaling (computed) && issignaling (expected)) | |
626 | { | |
627 | if ((exceptions & TEST_NAN_SIGN) != 0 | |
628 | && signbit (computed) != signbit (expected)) | |
629 | { | |
630 | ok = 0; | |
631 | printf ("signaling NaN has wrong sign.\n"); | |
632 | } | |
633 | else if ((exceptions & TEST_NAN_PAYLOAD) != 0 | |
634 | && (FUNC (getpayload) (&computed) | |
635 | != FUNC (getpayload) (&expected))) | |
636 | { | |
637 | ok = 0; | |
638 | printf ("signaling NaN has wrong payload.\n"); | |
639 | } | |
640 | else | |
641 | ok = 1; | |
642 | } | |
643 | else if (issignaling (computed) || issignaling (expected)) | |
644 | ok = 0; | |
645 | else if (isnan (computed) && isnan (expected)) | |
646 | { | |
647 | if ((exceptions & TEST_NAN_SIGN) != 0 | |
648 | && signbit (computed) != signbit (expected)) | |
649 | { | |
650 | ok = 0; | |
651 | printf ("quiet NaN has wrong sign.\n"); | |
652 | } | |
653 | else if ((exceptions & TEST_NAN_PAYLOAD) != 0 | |
654 | && (FUNC (getpayload) (&computed) | |
655 | != FUNC (getpayload) (&expected))) | |
656 | { | |
657 | ok = 0; | |
658 | printf ("quiet NaN has wrong payload.\n"); | |
659 | } | |
660 | else | |
661 | ok = 1; | |
662 | } | |
663 | else if (isinf (computed) && isinf (expected)) | |
664 | { | |
665 | /* Test for sign of infinities. */ | |
666 | if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0 | |
667 | && signbit (computed) != signbit (expected)) | |
668 | { | |
669 | ok = 0; | |
670 | printf ("infinity has wrong sign.\n"); | |
671 | } | |
672 | else | |
673 | ok = 1; | |
674 | } | |
675 | /* Don't calculate ULPs for infinities or any kind of NaNs. */ | |
676 | else if (isinf (computed) || isnan (computed) | |
677 | || isinf (expected) || isnan (expected)) | |
678 | ok = 0; | |
679 | else | |
680 | { | |
681 | diff = FUNC(fabs) (computed - expected); | |
682 | ulps = ULPDIFF (computed, expected); | |
683 | set_max_error (ulps, curr_max_error); | |
684 | print_diff = 1; | |
685 | if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0 | |
686 | && computed == 0.0 && expected == 0.0 | |
687 | && signbit(computed) != signbit (expected)) | |
688 | ok = 0; | |
689 | else if (ulps <= max_ulp && !ignore_max_ulp) | |
690 | ok = 1; | |
691 | else | |
692 | ok = 0; | |
693 | } | |
694 | if (print_screen (ok)) | |
695 | { | |
696 | if (!ok) | |
697 | printf ("Failure: "); | |
698 | printf ("Test: %s\n", test_name); | |
699 | printf ("Result:\n"); | |
700 | printf (" is: "); | |
701 | print_float (computed); | |
702 | printf (" should be: "); | |
703 | print_float (expected); | |
704 | if (print_diff) | |
705 | { | |
706 | char dstrn[FSTR_MAX], dstrx[FSTR_MAX]; | |
707 | char ustrn[FSTR_MAX], mustrn[FSTR_MAX]; | |
708 | fmt_ftostr (dstrn, FSTR_MAX, TYPE_DECIMAL_DIG - 1, "e", diff); | |
709 | fmt_ftostr (dstrx, FSTR_MAX, TYPE_HEX_DIG - 1, "a", diff); | |
710 | fmt_ftostr (ustrn, FSTR_MAX, 4, "f", ulps); | |
711 | fmt_ftostr (mustrn, FSTR_MAX, 4, "f", max_ulp); | |
712 | printf (" difference: %s %s\n", dstrn, dstrx); | |
713 | printf (" ulp : %s\n", ustrn); | |
714 | printf (" max.ulp : %s\n", mustrn); | |
715 | } | |
716 | } | |
717 | update_stats (ok); | |
718 | ||
719 | out: | |
720 | fpstack_test (test_name); | |
721 | errno = 0; | |
722 | } | |
723 | ||
724 | ||
725 | void | |
726 | check_float (const char *test_name, FLOAT computed, FLOAT expected, | |
727 | int exceptions) | |
728 | { | |
729 | check_float_internal (test_name, computed, expected, | |
730 | exceptions, &max_error, prev_max_error); | |
731 | } | |
732 | ||
733 | ||
734 | void | |
3c023dbf PM |
735 | check_complex (const char *test_name, CFLOAT computed, |
736 | CFLOAT expected, | |
3b2f6032 JM |
737 | int exception) |
738 | { | |
739 | FLOAT part_comp, part_exp; | |
740 | char *str; | |
741 | ||
742 | if (asprintf (&str, "Real part of: %s", test_name) == -1) | |
743 | abort (); | |
744 | ||
745 | part_comp = __real__ computed; | |
746 | part_exp = __real__ expected; | |
747 | ||
748 | check_float_internal (str, part_comp, part_exp, | |
749 | exception, &real_max_error, prev_real_max_error); | |
750 | free (str); | |
751 | ||
752 | if (asprintf (&str, "Imaginary part of: %s", test_name) == -1) | |
753 | abort (); | |
754 | ||
755 | part_comp = __imag__ computed; | |
756 | part_exp = __imag__ expected; | |
757 | ||
758 | /* Don't check again for exceptions or errno, just pass through the | |
759 | other relevant flags. */ | |
760 | check_float_internal (str, part_comp, part_exp, | |
761 | exception & (IGNORE_ZERO_INF_SIGN | |
762 | | TEST_NAN_SIGN | |
763 | | IGNORE_RESULT), | |
764 | &imag_max_error, prev_imag_max_error); | |
765 | free (str); | |
766 | } | |
767 | ||
768 | ||
769 | /* Check that computed and expected values are equal (int values). */ | |
770 | void | |
771 | check_int (const char *test_name, int computed, int expected, | |
772 | int exceptions) | |
773 | { | |
774 | int ok = 0; | |
775 | int errno_value = errno; | |
776 | ||
777 | test_exceptions (test_name, exceptions); | |
778 | test_errno (test_name, errno_value, exceptions); | |
779 | if (exceptions & IGNORE_RESULT) | |
780 | goto out; | |
781 | noTests++; | |
782 | if (computed == expected) | |
783 | ok = 1; | |
784 | ||
785 | if (print_screen (ok)) | |
786 | { | |
787 | if (!ok) | |
788 | printf ("Failure: "); | |
789 | printf ("Test: %s\n", test_name); | |
790 | printf ("Result:\n"); | |
791 | printf (" is: %d\n", computed); | |
792 | printf (" should be: %d\n", expected); | |
793 | } | |
794 | ||
795 | update_stats (ok); | |
796 | out: | |
797 | fpstack_test (test_name); | |
798 | errno = 0; | |
799 | } | |
800 | ||
801 | ||
802 | /* Check that computed and expected values are equal (long int values). */ | |
803 | void | |
804 | check_long (const char *test_name, long int computed, long int expected, | |
805 | int exceptions) | |
806 | { | |
807 | int ok = 0; | |
808 | int errno_value = errno; | |
809 | ||
810 | test_exceptions (test_name, exceptions); | |
811 | test_errno (test_name, errno_value, exceptions); | |
812 | if (exceptions & IGNORE_RESULT) | |
813 | goto out; | |
814 | noTests++; | |
815 | if (computed == expected) | |
816 | ok = 1; | |
817 | ||
818 | if (print_screen (ok)) | |
819 | { | |
820 | if (!ok) | |
821 | printf ("Failure: "); | |
822 | printf ("Test: %s\n", test_name); | |
823 | printf ("Result:\n"); | |
824 | printf (" is: %ld\n", computed); | |
825 | printf (" should be: %ld\n", expected); | |
826 | } | |
827 | ||
828 | update_stats (ok); | |
829 | out: | |
830 | fpstack_test (test_name); | |
831 | errno = 0; | |
832 | } | |
833 | ||
834 | ||
835 | /* Check that computed value is true/false. */ | |
836 | void | |
837 | check_bool (const char *test_name, int computed, int expected, | |
838 | int exceptions) | |
839 | { | |
840 | int ok = 0; | |
841 | int errno_value = errno; | |
842 | ||
843 | test_exceptions (test_name, exceptions); | |
844 | test_errno (test_name, errno_value, exceptions); | |
845 | if (exceptions & IGNORE_RESULT) | |
846 | goto out; | |
847 | noTests++; | |
848 | if ((computed == 0) == (expected == 0)) | |
849 | ok = 1; | |
850 | ||
851 | if (print_screen (ok)) | |
852 | { | |
853 | if (!ok) | |
854 | printf ("Failure: "); | |
855 | printf ("Test: %s\n", test_name); | |
856 | printf ("Result:\n"); | |
857 | printf (" is: %d\n", computed); | |
858 | printf (" should be: %d\n", expected); | |
859 | } | |
860 | ||
861 | update_stats (ok); | |
862 | out: | |
863 | fpstack_test (test_name); | |
864 | errno = 0; | |
865 | } | |
866 | ||
867 | ||
868 | /* check that computed and expected values are equal (long int values) */ | |
869 | void | |
870 | check_longlong (const char *test_name, long long int computed, | |
871 | long long int expected, | |
872 | int exceptions) | |
873 | { | |
874 | int ok = 0; | |
875 | int errno_value = errno; | |
876 | ||
877 | test_exceptions (test_name, exceptions); | |
878 | test_errno (test_name, errno_value, exceptions); | |
879 | if (exceptions & IGNORE_RESULT) | |
880 | goto out; | |
881 | noTests++; | |
882 | if (computed == expected) | |
883 | ok = 1; | |
884 | ||
885 | if (print_screen (ok)) | |
886 | { | |
887 | if (!ok) | |
888 | printf ("Failure:"); | |
889 | printf ("Test: %s\n", test_name); | |
890 | printf ("Result:\n"); | |
891 | printf (" is: %lld\n", computed); | |
892 | printf (" should be: %lld\n", expected); | |
893 | } | |
894 | ||
895 | update_stats (ok); | |
896 | out: | |
897 | fpstack_test (test_name); | |
898 | errno = 0; | |
899 | } | |
900 | ||
901 | ||
902 | /* Check that computed and expected values are equal (intmax_t values). */ | |
903 | void | |
904 | check_intmax_t (const char *test_name, intmax_t computed, | |
905 | intmax_t expected, int exceptions) | |
906 | { | |
907 | int ok = 0; | |
908 | int errno_value = errno; | |
909 | ||
910 | test_exceptions (test_name, exceptions); | |
911 | test_errno (test_name, errno_value, exceptions); | |
912 | if (exceptions & IGNORE_RESULT) | |
913 | goto out; | |
914 | noTests++; | |
915 | if (computed == expected) | |
916 | ok = 1; | |
917 | ||
918 | if (print_screen (ok)) | |
919 | { | |
920 | if (!ok) | |
921 | printf ("Failure:"); | |
922 | printf ("Test: %s\n", test_name); | |
923 | printf ("Result:\n"); | |
924 | printf (" is: %jd\n", computed); | |
925 | printf (" should be: %jd\n", expected); | |
926 | } | |
927 | ||
928 | update_stats (ok); | |
929 | out: | |
930 | fpstack_test (test_name); | |
931 | errno = 0; | |
932 | } | |
933 | ||
934 | ||
935 | /* Check that computed and expected values are equal (uintmax_t values). */ | |
936 | void | |
937 | check_uintmax_t (const char *test_name, uintmax_t computed, | |
938 | uintmax_t expected, int exceptions) | |
939 | { | |
940 | int ok = 0; | |
941 | int errno_value = errno; | |
942 | ||
943 | test_exceptions (test_name, exceptions); | |
944 | test_errno (test_name, errno_value, exceptions); | |
945 | if (exceptions & IGNORE_RESULT) | |
946 | goto out; | |
947 | noTests++; | |
948 | if (computed == expected) | |
949 | ok = 1; | |
950 | ||
951 | if (print_screen (ok)) | |
952 | { | |
953 | if (!ok) | |
954 | printf ("Failure:"); | |
955 | printf ("Test: %s\n", test_name); | |
956 | printf ("Result:\n"); | |
957 | printf (" is: %ju\n", computed); | |
958 | printf (" should be: %ju\n", expected); | |
959 | } | |
960 | ||
961 | update_stats (ok); | |
962 | out: | |
963 | fpstack_test (test_name); | |
964 | errno = 0; | |
965 | } | |
966 | ||
967 | /* Return whether a test with flags EXCEPTIONS should be run. */ | |
968 | int | |
969 | enable_test (int exceptions) | |
970 | { | |
971 | if (exceptions & XFAIL_TEST) | |
972 | return 0; | |
973 | if (flag_test_inline && (exceptions & NO_TEST_INLINE)) | |
974 | return 0; | |
975 | if (flag_test_finite && (exceptions & NON_FINITE) != 0) | |
976 | return 0; | |
977 | if (!SNAN_TESTS (FLOAT) && (exceptions & TEST_SNAN) != 0) | |
978 | return 0; | |
979 | if (flag_test_mathvec && (exceptions & NO_TEST_MATHVEC) != 0) | |
980 | return 0; | |
981 | ||
982 | return 1; | |
983 | } | |
984 | ||
985 | /* This is to prevent messages from the SVID libm emulation. */ | |
986 | int | |
987 | matherr (struct exception *x __attribute__ ((unused))) | |
988 | { | |
989 | return 1; | |
990 | } | |
991 | ||
992 | static void | |
993 | initialize (void) | |
994 | { | |
995 | fpstack_test ("start *init*"); | |
996 | ||
997 | /* Clear all exceptions. From now on we must not get random exceptions. */ | |
998 | feclearexcept (FE_ALL_EXCEPT); | |
999 | errno = 0; | |
1000 | ||
1001 | /* Test to make sure we start correctly. */ | |
1002 | fpstack_test ("end *init*"); | |
1003 | } | |
1004 | ||
1005 | /* Definitions of arguments for argp functions. */ | |
1006 | static const struct argp_option options[] = | |
1007 | { | |
1008 | { "verbose", 'v', "NUMBER", 0, "Level of verbosity (0..3)"}, | |
1009 | { "ulps-file", 'u', NULL, 0, "Output ulps to file ULPs"}, | |
1010 | { "no-max-error", 'f', NULL, 0, | |
1011 | "Don't output maximal errors of functions"}, | |
1012 | { "no-points", 'p', NULL, 0, | |
1013 | "Don't output results of functions invocations"}, | |
1014 | { "ignore-max-ulp", 'i', "yes/no", 0, | |
1015 | "Ignore given maximal errors"}, | |
1016 | { "output-dir", 'o', "DIR", 0, | |
1017 | "Directory where generated files will be placed"}, | |
1018 | { NULL, 0, NULL, 0, NULL } | |
1019 | }; | |
1020 | ||
1021 | /* Prototype for option handler. */ | |
1022 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
1023 | ||
1024 | /* Data structure to communicate with argp functions. */ | |
1025 | static struct argp argp = | |
1026 | { | |
1027 | options, parse_opt, NULL, doc, | |
1028 | }; | |
1029 | ||
1030 | ||
1031 | /* Handle program arguments. */ | |
1032 | static error_t | |
1033 | parse_opt (int key, char *arg, struct argp_state *state) | |
1034 | { | |
1035 | switch (key) | |
1036 | { | |
1037 | case 'f': | |
1038 | output_max_error = 0; | |
1039 | break; | |
1040 | case 'i': | |
1041 | if (strcmp (arg, "yes") == 0) | |
1042 | ignore_max_ulp = 1; | |
1043 | else if (strcmp (arg, "no") == 0) | |
1044 | ignore_max_ulp = 0; | |
1045 | break; | |
1046 | case 'o': | |
1047 | output_dir = (char *) malloc (strlen (arg) + 1); | |
1048 | if (output_dir != NULL) | |
1049 | strcpy (output_dir, arg); | |
1050 | else | |
1051 | return errno; | |
1052 | break; | |
1053 | case 'p': | |
1054 | output_points = 0; | |
1055 | break; | |
1056 | case 'u': | |
1057 | output_ulps = 1; | |
1058 | break; | |
1059 | case 'v': | |
1060 | if (optarg) | |
1061 | verbose = (unsigned int) strtoul (optarg, NULL, 0); | |
1062 | else | |
1063 | verbose = 3; | |
1064 | break; | |
1065 | default: | |
1066 | return ARGP_ERR_UNKNOWN; | |
1067 | } | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | /* Verify that our ulp () implementation is behaving as expected | |
1072 | or abort. */ | |
1073 | static void | |
1074 | check_ulp (void) | |
1075 | { | |
1076 | FLOAT ulps, ulpx, value; | |
1077 | int i; | |
1078 | /* Check ulp of zero is a subnormal value... */ | |
1079 | ulps = ulp (0x0.0p0); | |
1080 | if (fpclassify (ulps) != FP_SUBNORMAL) | |
1081 | { | |
1082 | fprintf (stderr, "ulp (0x0.0p0) is not FP_SUBNORMAL!\n"); | |
1083 | exit (EXIT_FAILURE); | |
1084 | } | |
1085 | /* Check that the ulp of one is a normal value... */ | |
4f5a9aff | 1086 | ulps = ulp (LIT(1.0)); |
3b2f6032 JM |
1087 | if (fpclassify (ulps) != FP_NORMAL) |
1088 | { | |
1089 | fprintf (stderr, "ulp (1.0L) is not FP_NORMAL\n"); | |
1090 | exit (EXIT_FAILURE); | |
1091 | } | |
1092 | ||
1093 | /* Compute the next subnormal value using nextafter to validate ulp. | |
1094 | We allow +/- 1 ulp around the represented value. */ | |
1095 | value = FUNC(nextafter) (0, 1); | |
1096 | ulps = ULPDIFF (value, 0); | |
4f5a9aff TMQMF |
1097 | ulpx = ulp (LIT(1.0)); |
1098 | if (ulps < (LIT(1.0) - ulpx) || ulps > (LIT(1.0) + ulpx)) | |
3b2f6032 JM |
1099 | { |
1100 | fprintf (stderr, "Value outside of 1 +/- 1ulp.\n"); | |
1101 | exit (EXIT_FAILURE); | |
1102 | } | |
1103 | /* Compute the nearest representable number from 10 towards 20. | |
1104 | The result is 10 + 1ulp. We use this to check the ulp function. | |
1105 | We allow +/- 1 ulp around the represented value. */ | |
1106 | value = FUNC(nextafter) (10, 20); | |
1107 | ulps = ULPDIFF (value, 10); | |
4f5a9aff TMQMF |
1108 | ulpx = ulp (LIT(1.0)); |
1109 | if (ulps < (LIT(1.0) - ulpx) || ulps > (LIT(1.0) + ulpx)) | |
3b2f6032 JM |
1110 | { |
1111 | fprintf (stderr, "Value outside of 1 +/- 1ulp.\n"); | |
1112 | exit (EXIT_FAILURE); | |
1113 | } | |
1114 | /* This gives one more ulp. */ | |
1115 | value = FUNC(nextafter) (value, 20); | |
1116 | ulps = ULPDIFF (value, 10); | |
4f5a9aff TMQMF |
1117 | ulpx = ulp (LIT(2.0)); |
1118 | if (ulps < (LIT(2.0) - ulpx) || ulps > (LIT(2.0) + ulpx)) | |
3b2f6032 JM |
1119 | { |
1120 | fprintf (stderr, "Value outside of 2 +/- 1ulp.\n"); | |
1121 | exit (EXIT_FAILURE); | |
1122 | } | |
1123 | /* And now calculate 100 ulp. */ | |
1124 | for (i = 2; i < 100; i++) | |
1125 | value = FUNC(nextafter) (value, 20); | |
1126 | ulps = ULPDIFF (value, 10); | |
4f5a9aff TMQMF |
1127 | ulpx = ulp (LIT(100.0)); |
1128 | if (ulps < (LIT(100.0) - ulpx) || ulps > (LIT(100.0) + ulpx)) | |
3b2f6032 JM |
1129 | { |
1130 | fprintf (stderr, "Value outside of 100 +/- 1ulp.\n"); | |
1131 | exit (EXIT_FAILURE); | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* Do all initialization for a test run with arguments given by ARGC | |
1136 | and ARGV. */ | |
1137 | void | |
1138 | libm_test_init (int argc, char **argv) | |
1139 | { | |
1140 | int remaining; | |
1141 | char *ulps_file_path; | |
1142 | size_t dir_len = 0; | |
1143 | ||
1144 | verbose = 1; | |
1145 | output_ulps = 0; | |
1146 | output_max_error = 1; | |
1147 | output_points = 1; | |
1148 | output_dir = NULL; | |
1149 | /* XXX set to 0 for releases. */ | |
1150 | ignore_max_ulp = 0; | |
1151 | ||
1152 | /* Parse and process arguments. */ | |
1153 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); | |
1154 | ||
1155 | if (remaining != argc) | |
1156 | { | |
1157 | fprintf (stderr, "wrong number of arguments"); | |
1158 | argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name); | |
1159 | exit (EXIT_FAILURE); | |
1160 | } | |
1161 | ||
1162 | if (output_ulps) | |
1163 | { | |
1164 | if (output_dir != NULL) | |
1165 | dir_len = strlen (output_dir); | |
1166 | ulps_file_path = (char *) malloc (dir_len + strlen (ulps_file_name) + 1); | |
1167 | if (ulps_file_path == NULL) | |
1168 | { | |
1169 | perror ("can't allocate path for `ULPs' file: "); | |
1170 | exit (1); | |
1171 | } | |
1172 | sprintf (ulps_file_path, "%s%s", output_dir == NULL ? "" : output_dir, ulps_file_name); | |
1173 | ulps_file = fopen (ulps_file_path, "a"); | |
1174 | if (ulps_file == NULL) | |
1175 | { | |
1176 | perror ("can't open file `ULPs' for writing: "); | |
1177 | exit (1); | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | ||
1182 | initialize (); | |
1183 | fputs (test_msg, stdout); | |
1184 | ||
3b2f6032 JM |
1185 | check_ulp (); |
1186 | } | |
1187 | ||
1188 | /* Process the test results, returning the exit status. */ | |
1189 | int | |
1190 | libm_test_finish (void) | |
1191 | { | |
1192 | if (output_ulps) | |
1193 | fclose (ulps_file); | |
1194 | ||
1195 | printf ("\nTest suite completed:\n"); | |
1196 | printf (" %d test cases plus %d tests for exception flags and\n" | |
1197 | " %d tests for errno executed.\n", | |
1198 | noTests, noExcTests, noErrnoTests); | |
1199 | if (noErrors) | |
1200 | { | |
1201 | printf (" %d errors occurred.\n", noErrors); | |
1202 | return 1; | |
1203 | } | |
1204 | printf (" All tests passed successfully.\n"); | |
1205 | ||
1206 | return 0; | |
1207 | } |