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3b2f6032 | 1 | /* Support code for testing libm functions (compiled once per type). |
2b778ceb | 2 | Copyright (C) 1997-2021 Free Software Foundation, Inc. |
3b2f6032 JM |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
3b2f6032 JM |
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 | |
2813e41e | 28 | gen-libm-test.py, with the resulting files included together with |
3b2f6032 JM |
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 | ||
1c15464c | 48 | ULP_IDX: The array indexes for ulps values for this function. |
bc9620d0 | 49 | |
3b2f6032 JM |
50 | LIT: Append the correct suffix to a literal. |
51 | ||
52 | LITM: Append the correct suffix to an M_* macro name. | |
53 | ||
54 | FTOSTR: A function similar in type to strfromf which converts a | |
55 | FLOAT to a string. | |
56 | ||
57 | snan_value_MACRO: The macro such as SNAN for a signaling NaN for | |
58 | the type. | |
59 | ||
60 | */ | |
61 | ||
62 | /* Parameter handling is primitive in the moment: | |
63 | --verbose=[0..3] for different levels of output: | |
64 | 0: only error count | |
65 | 1: basic report on failed tests (default) | |
66 | 2: full report on all tests | |
67 | -v for full output (equals --verbose=3) | |
68 | -u for generation of an ULPs file | |
69 | */ | |
70 | ||
71 | /* "Philosophy": | |
72 | ||
73 | This suite tests some aspects of the correct implementation of | |
74 | mathematical functions in libm. Some simple, specific parameters | |
75 | are tested for correctness but there's no exhaustive | |
76 | testing. Handling of specific inputs (e.g. infinity, not-a-number) | |
77 | is also tested. Correct handling of exceptions is checked | |
78 | against. These implemented tests should check all cases that are | |
79 | specified in ISO C99. | |
80 | ||
81 | NaN values: The payload of NaNs is set in inputs for functions | |
82 | where it is significant, and is examined in the outputs of some | |
83 | functions. | |
84 | ||
85 | Inline functions: Inlining functions should give an improvement in | |
86 | speed - but not in precission. The inlined functions return | |
87 | reasonable values for a reasonable range of input values. The | |
88 | result is not necessarily correct for all values and exceptions are | |
89 | not correctly raised in all cases. Problematic input and return | |
90 | values are infinity, not-a-number and minus zero. This suite | |
91 | therefore does not check these specific inputs and the exception | |
92 | handling for inlined mathematical functions - just the "reasonable" | |
93 | values are checked. | |
94 | ||
95 | Beware: The tests might fail for any of the following reasons: | |
96 | - Tests are wrong | |
97 | - Functions are wrong | |
98 | - Floating Point Unit not working properly | |
99 | - Compiler has errors | |
100 | ||
101 | With e.g. gcc 2.7.2.2 the test for cexp fails because of a compiler error. | |
102 | ||
103 | ||
104 | To Do: All parameter should be numbers that can be represented as | |
105 | exact floating point values. Currently some values cannot be | |
106 | represented exactly and therefore the result is not the expected | |
107 | result. For this we will use 36 digits so that numbers can be | |
108 | represented exactly. */ | |
109 | ||
110 | #include "libm-test-support.h" | |
111 | ||
112 | #include <argp.h> | |
113 | #include <errno.h> | |
114 | #include <string.h> | |
115 | ||
116 | /* This header defines func_ulps, func_real_ulps and func_imag_ulps | |
117 | arrays. */ | |
118 | #include "libm-test-ulps.h" | |
119 | ||
120 | /* Maximum character buffer to store a stringitized FLOAT value. */ | |
121 | #define FSTR_MAX (128) | |
122 | ||
123 | #define ulps_file_name "ULPs" /* Name of the ULPs file. */ | |
124 | static FILE *ulps_file; /* File to document difference. */ | |
125 | static int output_ulps; /* Should ulps printed? */ | |
126 | static char *output_dir; /* Directory where generated files will be written. */ | |
127 | ||
128 | static int noErrors; /* number of errors */ | |
129 | static int noTests; /* number of tests (without testing exceptions) */ | |
130 | static int noExcTests; /* number of tests for exception flags */ | |
131 | static int noErrnoTests;/* number of tests for errno values */ | |
132 | ||
133 | static int verbose; | |
134 | static int output_max_error; /* Should the maximal errors printed? */ | |
135 | static int output_points; /* Should the single function results printed? */ | |
136 | static int ignore_max_ulp; /* Should we ignore max_ulp? */ | |
8e554659 | 137 | static int test_ibm128; /* Is argument or result IBM long double? */ |
3b2f6032 JM |
138 | |
139 | static FLOAT max_error, real_max_error, imag_max_error; | |
140 | ||
141 | static FLOAT prev_max_error, prev_real_max_error, prev_imag_max_error; | |
142 | ||
143 | static FLOAT max_valid_error; | |
144 | ||
145 | /* Sufficient numbers of digits to represent any floating-point value | |
146 | unambiguously (for any choice of the number of bits in the first | |
147 | hex digit, in the case of TYPE_HEX_DIG). When used with printf | |
148 | formats where the precision counts only digits after the point, 1 | |
149 | is subtracted from these values. */ | |
150 | #define TYPE_DECIMAL_DIG __CONCATX (PREFIX, _DECIMAL_DIG) | |
151 | #define TYPE_HEX_DIG ((MANT_DIG + 6) / 4) | |
152 | ||
153 | /* Converts VALUE (a floating-point number) to string and writes it to DEST. | |
154 | PRECISION specifies the number of fractional digits that should be printed. | |
155 | CONVERSION is the conversion specifier, such as in printf, e.g. 'f' or 'a'. | |
156 | The output is prepended with an empty space if VALUE is non-negative. */ | |
157 | static void | |
158 | fmt_ftostr (char *dest, size_t size, int precision, const char *conversion, | |
159 | FLOAT value) | |
160 | { | |
161 | char format[64]; | |
162 | char *ptr_format; | |
163 | int ret; | |
164 | ||
165 | /* Generate the format string. */ | |
166 | ptr_format = stpcpy (format, "%."); | |
167 | ret = sprintf (ptr_format, "%d", precision); | |
168 | ptr_format += ret; | |
169 | ptr_format = stpcpy (ptr_format, conversion); | |
170 | ||
171 | /* Add a space to the beginning of the output string, if the floating-point | |
172 | number is non-negative. This mimics the behavior of the space (' ') flag | |
173 | in snprintf, which is not available on strfrom. */ | |
174 | if (! signbit (value)) | |
175 | { | |
176 | *dest = ' '; | |
177 | dest++; | |
178 | size--; | |
179 | } | |
180 | ||
181 | /* Call the float to string conversion function, e.g.: strfromd. */ | |
182 | FTOSTR (dest, size, format, value); | |
183 | } | |
184 | ||
185 | /* Compare KEY (a string, with the name of a function) with ULP (a | |
186 | pointer to a struct ulp_data structure), returning a value less | |
187 | than, equal to or greater than zero for use in bsearch. */ | |
188 | ||
189 | static int | |
190 | compare_ulp_data (const void *key, const void *ulp) | |
191 | { | |
192 | const char *keystr = key; | |
193 | const struct ulp_data *ulpdat = ulp; | |
194 | return strcmp (keystr, ulpdat->name); | |
195 | } | |
196 | ||
bc9620d0 | 197 | static const int ulp_idx = ULP_IDX; |
3b2f6032 JM |
198 | |
199 | /* Return the ulps for NAME in array DATA with NMEMB elements, or 0 if | |
200 | no ulps listed. */ | |
201 | ||
202 | static FLOAT | |
203 | find_ulps (const char *name, const struct ulp_data *data, size_t nmemb) | |
204 | { | |
205 | const struct ulp_data *entry = bsearch (name, data, nmemb, sizeof (*data), | |
206 | compare_ulp_data); | |
207 | if (entry == NULL) | |
208 | return 0; | |
209 | else | |
1c15464c | 210 | return entry->max_ulp[ulp_idx]; |
3b2f6032 JM |
211 | } |
212 | ||
213 | void | |
8e554659 | 214 | init_max_error (const char *name, int exact, int testing_ibm128) |
3b2f6032 JM |
215 | { |
216 | max_error = 0; | |
217 | real_max_error = 0; | |
218 | imag_max_error = 0; | |
8e554659 | 219 | test_ibm128 = testing_ibm128; |
3b2f6032 JM |
220 | prev_max_error = find_ulps (name, func_ulps, |
221 | sizeof (func_ulps) / sizeof (func_ulps[0])); | |
222 | prev_real_max_error = find_ulps (name, func_real_ulps, | |
223 | (sizeof (func_real_ulps) | |
224 | / sizeof (func_real_ulps[0]))); | |
225 | prev_imag_max_error = find_ulps (name, func_imag_ulps, | |
226 | (sizeof (func_imag_ulps) | |
227 | / sizeof (func_imag_ulps[0]))); | |
8e554659 JM |
228 | if (testing_ibm128) |
229 | /* The documented accuracy of IBM long double division is 3ulp | |
230 | (see libgcc/config/rs6000/ibm-ldouble-format), so do not | |
231 | require better accuracy for libm functions that are exactly | |
232 | defined for other formats. */ | |
233 | max_valid_error = exact ? 3 : 16; | |
234 | else | |
235 | max_valid_error = exact ? 0 : 9; | |
3b2f6032 JM |
236 | prev_max_error = (prev_max_error <= max_valid_error |
237 | ? prev_max_error | |
238 | : max_valid_error); | |
239 | prev_real_max_error = (prev_real_max_error <= max_valid_error | |
240 | ? prev_real_max_error | |
241 | : max_valid_error); | |
242 | prev_imag_max_error = (prev_imag_max_error <= max_valid_error | |
243 | ? prev_imag_max_error | |
244 | : max_valid_error); | |
245 | feclearexcept (FE_ALL_EXCEPT); | |
246 | errno = 0; | |
247 | } | |
248 | ||
249 | static void | |
250 | set_max_error (FLOAT current, FLOAT *curr_max_error) | |
251 | { | |
252 | if (current > *curr_max_error && current <= max_valid_error) | |
253 | *curr_max_error = current; | |
254 | } | |
255 | ||
256 | ||
257 | /* Print a FLOAT. */ | |
258 | static void | |
259 | print_float (FLOAT f) | |
260 | { | |
261 | /* As printf doesn't differ between a sNaN and a qNaN, do this manually. */ | |
262 | if (issignaling (f)) | |
263 | printf ("sNaN\n"); | |
264 | else if (isnan (f)) | |
265 | printf ("qNaN\n"); | |
266 | else | |
267 | { | |
268 | char fstrn[FSTR_MAX], fstrx[FSTR_MAX]; | |
269 | fmt_ftostr (fstrn, FSTR_MAX, TYPE_DECIMAL_DIG - 1, "e", f); | |
270 | fmt_ftostr (fstrx, FSTR_MAX, TYPE_HEX_DIG - 1, "a", f); | |
271 | printf ("%s %s\n", fstrn, fstrx); | |
272 | } | |
273 | } | |
274 | ||
275 | /* Should the message print to screen? This depends on the verbose flag, | |
276 | and the test status. */ | |
277 | static int | |
278 | print_screen (int ok) | |
279 | { | |
280 | if (output_points | |
281 | && (verbose > 1 | |
282 | || (verbose == 1 && ok == 0))) | |
283 | return 1; | |
284 | return 0; | |
285 | } | |
286 | ||
287 | ||
288 | /* Should the message print to screen? This depends on the verbose flag, | |
289 | and the test status. */ | |
290 | static int | |
291 | print_screen_max_error (int ok) | |
292 | { | |
293 | if (output_max_error | |
294 | && (verbose > 1 | |
295 | || ((verbose == 1) && (ok == 0)))) | |
296 | return 1; | |
297 | return 0; | |
298 | } | |
299 | ||
300 | /* Update statistic counters. */ | |
301 | static void | |
302 | update_stats (int ok) | |
303 | { | |
304 | ++noTests; | |
305 | if (!ok) | |
306 | ++noErrors; | |
307 | } | |
308 | ||
309 | static void | |
310 | print_function_ulps (const char *function_name, FLOAT ulp) | |
311 | { | |
312 | if (output_ulps) | |
313 | { | |
314 | char ustrn[FSTR_MAX]; | |
315 | FTOSTR (ustrn, FSTR_MAX, "%.0f", FUNC (ceil) (ulp)); | |
316 | fprintf (ulps_file, "Function: \"%s\":\n", function_name); | |
317 | fprintf (ulps_file, "%s: %s\n", qtype_str, ustrn); | |
318 | } | |
319 | } | |
320 | ||
321 | ||
322 | static void | |
323 | print_complex_function_ulps (const char *function_name, FLOAT real_ulp, | |
324 | FLOAT imag_ulp) | |
325 | { | |
326 | if (output_ulps) | |
327 | { | |
328 | char fstrn[FSTR_MAX]; | |
329 | if (real_ulp != 0.0) | |
330 | { | |
331 | FTOSTR (fstrn, FSTR_MAX, "%.0f", FUNC (ceil) (real_ulp)); | |
332 | fprintf (ulps_file, "Function: Real part of \"%s\":\n", function_name); | |
333 | fprintf (ulps_file, "%s: %s\n", qtype_str, fstrn); | |
334 | } | |
335 | if (imag_ulp != 0.0) | |
336 | { | |
337 | FTOSTR (fstrn, FSTR_MAX, "%.0f", FUNC (ceil) (imag_ulp)); | |
338 | fprintf (ulps_file, "Function: Imaginary part of \"%s\":\n", function_name); | |
339 | fprintf (ulps_file, "%s: %s\n", qtype_str, fstrn); | |
340 | } | |
341 | ||
342 | ||
343 | } | |
344 | } | |
345 | ||
346 | ||
347 | ||
348 | /* Test if Floating-Point stack hasn't changed */ | |
349 | static void | |
350 | fpstack_test (const char *test_name) | |
351 | { | |
352 | #if defined (__i386__) || defined (__x86_64__) | |
353 | static int old_stack; | |
354 | int sw; | |
355 | ||
356 | asm ("fnstsw" : "=a" (sw)); | |
357 | sw >>= 11; | |
358 | sw &= 7; | |
359 | ||
360 | if (sw != old_stack) | |
361 | { | |
362 | printf ("FP-Stack wrong after test %s (%d, should be %d)\n", | |
363 | test_name, sw, old_stack); | |
364 | ++noErrors; | |
365 | old_stack = sw; | |
366 | } | |
367 | #endif | |
368 | } | |
369 | ||
370 | ||
371 | void | |
372 | print_max_error (const char *func_name) | |
373 | { | |
374 | int ok = 0; | |
375 | ||
376 | if (max_error == 0.0 || (max_error <= prev_max_error && !ignore_max_ulp)) | |
377 | { | |
378 | ok = 1; | |
379 | } | |
380 | ||
381 | if (!ok) | |
382 | print_function_ulps (func_name, max_error); | |
383 | ||
384 | ||
385 | if (print_screen_max_error (ok)) | |
386 | { | |
387 | char mestr[FSTR_MAX], pmestr[FSTR_MAX]; | |
388 | FTOSTR (mestr, FSTR_MAX, "%.0f", FUNC (ceil) (max_error)); | |
389 | FTOSTR (pmestr, FSTR_MAX, "%.0f", FUNC (ceil) (prev_max_error)); | |
390 | printf ("Maximal error of `%s'\n", func_name); | |
391 | printf (" is : %s ulp\n", mestr); | |
392 | printf (" accepted: %s ulp\n", pmestr); | |
393 | } | |
394 | ||
395 | update_stats (ok); | |
396 | } | |
397 | ||
398 | ||
399 | void | |
400 | print_complex_max_error (const char *func_name) | |
401 | { | |
402 | int real_ok = 0, imag_ok = 0, ok; | |
403 | ||
404 | if (real_max_error == 0 | |
405 | || (real_max_error <= prev_real_max_error && !ignore_max_ulp)) | |
406 | { | |
407 | real_ok = 1; | |
408 | } | |
409 | ||
410 | if (imag_max_error == 0 | |
411 | || (imag_max_error <= prev_imag_max_error && !ignore_max_ulp)) | |
412 | { | |
413 | imag_ok = 1; | |
414 | } | |
415 | ||
416 | ok = real_ok && imag_ok; | |
417 | ||
418 | if (!ok) | |
419 | print_complex_function_ulps (func_name, | |
420 | real_ok ? 0 : real_max_error, | |
421 | imag_ok ? 0 : imag_max_error); | |
422 | ||
423 | if (print_screen_max_error (ok)) | |
424 | { | |
425 | char rmestr[FSTR_MAX], prmestr[FSTR_MAX]; | |
426 | char imestr[FSTR_MAX], pimestr[FSTR_MAX]; | |
427 | FTOSTR (rmestr, FSTR_MAX, "%.0f", FUNC (ceil) (real_max_error)); | |
428 | FTOSTR (prmestr, FSTR_MAX, "%.0f", FUNC (ceil) (prev_real_max_error)); | |
429 | FTOSTR (imestr, FSTR_MAX, "%.0f", FUNC (ceil) (imag_max_error)); | |
430 | FTOSTR (pimestr, FSTR_MAX, "%.0f", FUNC (ceil) (prev_imag_max_error)); | |
431 | printf ("Maximal error of real part of: %s\n", func_name); | |
432 | printf (" is : %s ulp\n", rmestr); | |
433 | printf (" accepted: %s ulp\n", prmestr); | |
434 | printf ("Maximal error of imaginary part of: %s\n", func_name); | |
435 | printf (" is : %s ulp\n", imestr); | |
436 | printf (" accepted: %s ulp\n", pimestr); | |
437 | } | |
438 | ||
439 | update_stats (ok); | |
440 | } | |
441 | ||
442 | ||
443 | #if FE_ALL_EXCEPT | |
444 | /* Test whether a given exception was raised. */ | |
445 | static void | |
446 | test_single_exception (const char *test_name, | |
447 | int exception, | |
448 | int exc_flag, | |
449 | int fe_flag, | |
450 | const char *flag_name) | |
451 | { | |
452 | int ok = 1; | |
453 | if (exception & exc_flag) | |
454 | { | |
455 | if (fetestexcept (fe_flag)) | |
456 | { | |
457 | if (print_screen (1)) | |
458 | printf ("Pass: %s: Exception \"%s\" set\n", test_name, flag_name); | |
459 | } | |
460 | else | |
461 | { | |
462 | ok = 0; | |
463 | if (print_screen (0)) | |
464 | printf ("Failure: %s: Exception \"%s\" not set\n", | |
465 | test_name, flag_name); | |
466 | } | |
467 | } | |
468 | else | |
469 | { | |
470 | if (fetestexcept (fe_flag)) | |
471 | { | |
472 | ok = 0; | |
473 | if (print_screen (0)) | |
474 | printf ("Failure: %s: Exception \"%s\" set\n", | |
475 | test_name, flag_name); | |
476 | } | |
477 | else | |
478 | { | |
479 | if (print_screen (1)) | |
480 | printf ("%s: Exception \"%s\" not set\n", test_name, | |
481 | flag_name); | |
482 | } | |
483 | } | |
484 | if (!ok) | |
485 | ++noErrors; | |
486 | } | |
487 | #endif | |
488 | ||
489 | /* Test whether exceptions given by EXCEPTION are raised. Ignore thereby | |
490 | allowed but not required exceptions. | |
491 | */ | |
492 | static void | |
493 | test_exceptions (const char *test_name, int exception) | |
494 | { | |
495 | if (flag_test_exceptions && EXCEPTION_TESTS (FLOAT)) | |
496 | { | |
497 | ++noExcTests; | |
498 | #ifdef FE_DIVBYZERO | |
499 | if ((exception & DIVIDE_BY_ZERO_EXCEPTION_OK) == 0) | |
500 | test_single_exception (test_name, exception, | |
501 | DIVIDE_BY_ZERO_EXCEPTION, FE_DIVBYZERO, | |
502 | "Divide by zero"); | |
503 | #endif | |
504 | #ifdef FE_INVALID | |
505 | if ((exception & INVALID_EXCEPTION_OK) == 0) | |
506 | test_single_exception (test_name, exception, | |
507 | INVALID_EXCEPTION, FE_INVALID, | |
508 | "Invalid operation"); | |
509 | #endif | |
510 | #ifdef FE_OVERFLOW | |
511 | if ((exception & OVERFLOW_EXCEPTION_OK) == 0) | |
512 | test_single_exception (test_name, exception, OVERFLOW_EXCEPTION, | |
513 | FE_OVERFLOW, "Overflow"); | |
514 | #endif | |
515 | /* Spurious "underflow" and "inexact" exceptions are always | |
516 | allowed for IBM long double, in line with the underlying | |
517 | arithmetic. */ | |
518 | #ifdef FE_UNDERFLOW | |
519 | if ((exception & UNDERFLOW_EXCEPTION_OK) == 0 | |
8e554659 | 520 | && !(test_ibm128 |
3b2f6032 JM |
521 | && (exception & UNDERFLOW_EXCEPTION) == 0)) |
522 | test_single_exception (test_name, exception, UNDERFLOW_EXCEPTION, | |
523 | FE_UNDERFLOW, "Underflow"); | |
524 | #endif | |
525 | #ifdef FE_INEXACT | |
526 | if ((exception & (INEXACT_EXCEPTION | NO_INEXACT_EXCEPTION)) != 0 | |
8e554659 | 527 | && !(test_ibm128 |
3b2f6032 JM |
528 | && (exception & NO_INEXACT_EXCEPTION) != 0)) |
529 | test_single_exception (test_name, exception, INEXACT_EXCEPTION, | |
530 | FE_INEXACT, "Inexact"); | |
531 | #endif | |
532 | } | |
533 | feclearexcept (FE_ALL_EXCEPT); | |
534 | } | |
535 | ||
536 | /* Test whether errno for TEST_NAME, set to ERRNO_VALUE, has value | |
537 | EXPECTED_VALUE (description EXPECTED_NAME). */ | |
538 | static void | |
539 | test_single_errno (const char *test_name, int errno_value, | |
540 | int expected_value, const char *expected_name) | |
541 | { | |
542 | if (errno_value == expected_value) | |
543 | { | |
544 | if (print_screen (1)) | |
545 | printf ("Pass: %s: errno set to %d (%s)\n", test_name, errno_value, | |
546 | expected_name); | |
547 | } | |
548 | else | |
549 | { | |
550 | ++noErrors; | |
551 | if (print_screen (0)) | |
552 | printf ("Failure: %s: errno set to %d, expected %d (%s)\n", | |
553 | test_name, errno_value, expected_value, expected_name); | |
554 | } | |
555 | } | |
556 | ||
557 | /* Test whether errno (value ERRNO_VALUE) has been for TEST_NAME set | |
558 | as required by EXCEPTIONS. */ | |
559 | static void | |
560 | test_errno (const char *test_name, int errno_value, int exceptions) | |
561 | { | |
562 | if (flag_test_errno) | |
563 | { | |
564 | ++noErrnoTests; | |
565 | if (exceptions & ERRNO_UNCHANGED) | |
566 | test_single_errno (test_name, errno_value, 0, "unchanged"); | |
567 | if (exceptions & ERRNO_EDOM) | |
568 | test_single_errno (test_name, errno_value, EDOM, "EDOM"); | |
569 | if (exceptions & ERRNO_ERANGE) | |
570 | test_single_errno (test_name, errno_value, ERANGE, "ERANGE"); | |
571 | } | |
572 | } | |
573 | ||
574 | /* Returns the number of ulps that GIVEN is away from EXPECTED. */ | |
575 | #define ULPDIFF(given, expected) \ | |
576 | (FUNC(fabs) ((given) - (expected)) / ulp (expected)) | |
577 | ||
578 | /* Returns the size of an ulp for VALUE. */ | |
579 | static FLOAT | |
580 | ulp (FLOAT value) | |
581 | { | |
582 | FLOAT ulp; | |
583 | ||
584 | switch (fpclassify (value)) | |
585 | { | |
586 | case FP_ZERO: | |
587 | /* We compute the distance to the next FP which is the same as the | |
588 | value of the smallest subnormal number. Previously we used | |
589 | 2^-(MANT_DIG - 1) which is too large a value to be useful. Note that we | |
590 | can't use ilogb(0), since that isn't a valid thing to do. As a point | |
591 | of comparison Java's ulp returns the next normal value e.g. | |
592 | 2^(1 - MAX_EXP) for ulp(0), but that is not what we want for | |
593 | glibc. */ | |
594 | /* Fall through... */ | |
595 | case FP_SUBNORMAL: | |
596 | /* The next closest subnormal value is a constant distance away. */ | |
597 | ulp = FUNC(ldexp) (1.0, MIN_EXP - MANT_DIG); | |
598 | break; | |
599 | ||
600 | case FP_NORMAL: | |
601 | ulp = FUNC(ldexp) (1.0, FUNC(ilogb) (value) - MANT_DIG + 1); | |
602 | break; | |
603 | ||
604 | default: | |
605 | /* It should never happen. */ | |
606 | abort (); | |
607 | break; | |
608 | } | |
609 | return ulp; | |
610 | } | |
611 | ||
612 | static void | |
613 | check_float_internal (const char *test_name, FLOAT computed, FLOAT expected, | |
614 | int exceptions, | |
615 | FLOAT *curr_max_error, FLOAT max_ulp) | |
616 | { | |
617 | int ok = 0; | |
618 | int print_diff = 0; | |
619 | FLOAT diff = 0; | |
620 | FLOAT ulps = 0; | |
621 | int errno_value = errno; | |
622 | ||
623 | test_exceptions (test_name, exceptions); | |
624 | test_errno (test_name, errno_value, exceptions); | |
625 | if (exceptions & IGNORE_RESULT) | |
626 | goto out; | |
627 | if (issignaling (computed) && issignaling (expected)) | |
628 | { | |
629 | if ((exceptions & TEST_NAN_SIGN) != 0 | |
630 | && signbit (computed) != signbit (expected)) | |
631 | { | |
632 | ok = 0; | |
633 | printf ("signaling NaN has wrong sign.\n"); | |
634 | } | |
635 | else if ((exceptions & TEST_NAN_PAYLOAD) != 0 | |
636 | && (FUNC (getpayload) (&computed) | |
637 | != FUNC (getpayload) (&expected))) | |
638 | { | |
639 | ok = 0; | |
640 | printf ("signaling NaN has wrong payload.\n"); | |
641 | } | |
642 | else | |
643 | ok = 1; | |
644 | } | |
645 | else if (issignaling (computed) || issignaling (expected)) | |
646 | ok = 0; | |
647 | else if (isnan (computed) && isnan (expected)) | |
648 | { | |
649 | if ((exceptions & TEST_NAN_SIGN) != 0 | |
650 | && signbit (computed) != signbit (expected)) | |
651 | { | |
652 | ok = 0; | |
653 | printf ("quiet NaN has wrong sign.\n"); | |
654 | } | |
655 | else if ((exceptions & TEST_NAN_PAYLOAD) != 0 | |
656 | && (FUNC (getpayload) (&computed) | |
657 | != FUNC (getpayload) (&expected))) | |
658 | { | |
659 | ok = 0; | |
660 | printf ("quiet NaN has wrong payload.\n"); | |
661 | } | |
662 | else | |
663 | ok = 1; | |
664 | } | |
665 | else if (isinf (computed) && isinf (expected)) | |
666 | { | |
667 | /* Test for sign of infinities. */ | |
668 | if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0 | |
669 | && signbit (computed) != signbit (expected)) | |
670 | { | |
671 | ok = 0; | |
672 | printf ("infinity has wrong sign.\n"); | |
673 | } | |
674 | else | |
675 | ok = 1; | |
676 | } | |
677 | /* Don't calculate ULPs for infinities or any kind of NaNs. */ | |
678 | else if (isinf (computed) || isnan (computed) | |
679 | || isinf (expected) || isnan (expected)) | |
680 | ok = 0; | |
681 | else | |
682 | { | |
683 | diff = FUNC(fabs) (computed - expected); | |
684 | ulps = ULPDIFF (computed, expected); | |
685 | set_max_error (ulps, curr_max_error); | |
686 | print_diff = 1; | |
687 | if ((exceptions & IGNORE_ZERO_INF_SIGN) == 0 | |
688 | && computed == 0.0 && expected == 0.0 | |
689 | && signbit(computed) != signbit (expected)) | |
690 | ok = 0; | |
691 | else if (ulps <= max_ulp && !ignore_max_ulp) | |
692 | ok = 1; | |
693 | else | |
694 | ok = 0; | |
695 | } | |
696 | if (print_screen (ok)) | |
697 | { | |
698 | if (!ok) | |
699 | printf ("Failure: "); | |
700 | printf ("Test: %s\n", test_name); | |
701 | printf ("Result:\n"); | |
702 | printf (" is: "); | |
703 | print_float (computed); | |
704 | printf (" should be: "); | |
705 | print_float (expected); | |
706 | if (print_diff) | |
707 | { | |
708 | char dstrn[FSTR_MAX], dstrx[FSTR_MAX]; | |
709 | char ustrn[FSTR_MAX], mustrn[FSTR_MAX]; | |
710 | fmt_ftostr (dstrn, FSTR_MAX, TYPE_DECIMAL_DIG - 1, "e", diff); | |
711 | fmt_ftostr (dstrx, FSTR_MAX, TYPE_HEX_DIG - 1, "a", diff); | |
712 | fmt_ftostr (ustrn, FSTR_MAX, 4, "f", ulps); | |
713 | fmt_ftostr (mustrn, FSTR_MAX, 4, "f", max_ulp); | |
714 | printf (" difference: %s %s\n", dstrn, dstrx); | |
715 | printf (" ulp : %s\n", ustrn); | |
716 | printf (" max.ulp : %s\n", mustrn); | |
717 | } | |
718 | } | |
719 | update_stats (ok); | |
720 | ||
721 | out: | |
722 | fpstack_test (test_name); | |
48273d42 | 723 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
724 | errno = 0; |
725 | } | |
726 | ||
727 | ||
728 | void | |
729 | check_float (const char *test_name, FLOAT computed, FLOAT expected, | |
730 | int exceptions) | |
731 | { | |
732 | check_float_internal (test_name, computed, expected, | |
733 | exceptions, &max_error, prev_max_error); | |
734 | } | |
735 | ||
736 | ||
737 | void | |
3c023dbf PM |
738 | check_complex (const char *test_name, CFLOAT computed, |
739 | CFLOAT expected, | |
3b2f6032 JM |
740 | int exception) |
741 | { | |
742 | FLOAT part_comp, part_exp; | |
743 | char *str; | |
744 | ||
745 | if (asprintf (&str, "Real part of: %s", test_name) == -1) | |
746 | abort (); | |
747 | ||
748 | part_comp = __real__ computed; | |
749 | part_exp = __real__ expected; | |
750 | ||
751 | check_float_internal (str, part_comp, part_exp, | |
752 | exception, &real_max_error, prev_real_max_error); | |
753 | free (str); | |
754 | ||
755 | if (asprintf (&str, "Imaginary part of: %s", test_name) == -1) | |
756 | abort (); | |
757 | ||
758 | part_comp = __imag__ computed; | |
759 | part_exp = __imag__ expected; | |
760 | ||
761 | /* Don't check again for exceptions or errno, just pass through the | |
762 | other relevant flags. */ | |
763 | check_float_internal (str, part_comp, part_exp, | |
764 | exception & (IGNORE_ZERO_INF_SIGN | |
765 | | TEST_NAN_SIGN | |
766 | | IGNORE_RESULT), | |
767 | &imag_max_error, prev_imag_max_error); | |
768 | free (str); | |
769 | } | |
770 | ||
771 | ||
772 | /* Check that computed and expected values are equal (int values). */ | |
773 | void | |
774 | check_int (const char *test_name, int computed, int expected, | |
775 | int exceptions) | |
776 | { | |
777 | int ok = 0; | |
778 | int errno_value = errno; | |
779 | ||
780 | test_exceptions (test_name, exceptions); | |
781 | test_errno (test_name, errno_value, exceptions); | |
782 | if (exceptions & IGNORE_RESULT) | |
783 | goto out; | |
784 | noTests++; | |
785 | if (computed == expected) | |
786 | ok = 1; | |
787 | ||
788 | if (print_screen (ok)) | |
789 | { | |
790 | if (!ok) | |
791 | printf ("Failure: "); | |
792 | printf ("Test: %s\n", test_name); | |
793 | printf ("Result:\n"); | |
794 | printf (" is: %d\n", computed); | |
795 | printf (" should be: %d\n", expected); | |
796 | } | |
797 | ||
798 | update_stats (ok); | |
799 | out: | |
800 | fpstack_test (test_name); | |
48273d42 | 801 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
802 | errno = 0; |
803 | } | |
804 | ||
805 | ||
806 | /* Check that computed and expected values are equal (long int values). */ | |
807 | void | |
808 | check_long (const char *test_name, long int computed, long int expected, | |
809 | int exceptions) | |
810 | { | |
811 | int ok = 0; | |
812 | int errno_value = errno; | |
813 | ||
814 | test_exceptions (test_name, exceptions); | |
815 | test_errno (test_name, errno_value, exceptions); | |
816 | if (exceptions & IGNORE_RESULT) | |
817 | goto out; | |
818 | noTests++; | |
819 | if (computed == expected) | |
820 | ok = 1; | |
821 | ||
822 | if (print_screen (ok)) | |
823 | { | |
824 | if (!ok) | |
825 | printf ("Failure: "); | |
826 | printf ("Test: %s\n", test_name); | |
827 | printf ("Result:\n"); | |
828 | printf (" is: %ld\n", computed); | |
829 | printf (" should be: %ld\n", expected); | |
830 | } | |
831 | ||
832 | update_stats (ok); | |
833 | out: | |
834 | fpstack_test (test_name); | |
48273d42 | 835 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
836 | errno = 0; |
837 | } | |
838 | ||
839 | ||
840 | /* Check that computed value is true/false. */ | |
841 | void | |
842 | check_bool (const char *test_name, int computed, int expected, | |
843 | int exceptions) | |
844 | { | |
845 | int ok = 0; | |
846 | int errno_value = errno; | |
847 | ||
848 | test_exceptions (test_name, exceptions); | |
849 | test_errno (test_name, errno_value, exceptions); | |
850 | if (exceptions & IGNORE_RESULT) | |
851 | goto out; | |
852 | noTests++; | |
853 | if ((computed == 0) == (expected == 0)) | |
854 | ok = 1; | |
855 | ||
856 | if (print_screen (ok)) | |
857 | { | |
858 | if (!ok) | |
859 | printf ("Failure: "); | |
860 | printf ("Test: %s\n", test_name); | |
861 | printf ("Result:\n"); | |
862 | printf (" is: %d\n", computed); | |
863 | printf (" should be: %d\n", expected); | |
864 | } | |
865 | ||
866 | update_stats (ok); | |
867 | out: | |
868 | fpstack_test (test_name); | |
48273d42 | 869 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
870 | errno = 0; |
871 | } | |
872 | ||
873 | ||
874 | /* check that computed and expected values are equal (long int values) */ | |
875 | void | |
876 | check_longlong (const char *test_name, long long int computed, | |
877 | long long int expected, | |
878 | int exceptions) | |
879 | { | |
880 | int ok = 0; | |
881 | int errno_value = errno; | |
882 | ||
883 | test_exceptions (test_name, exceptions); | |
884 | test_errno (test_name, errno_value, exceptions); | |
885 | if (exceptions & IGNORE_RESULT) | |
886 | goto out; | |
887 | noTests++; | |
888 | if (computed == expected) | |
889 | ok = 1; | |
890 | ||
891 | if (print_screen (ok)) | |
892 | { | |
893 | if (!ok) | |
894 | printf ("Failure:"); | |
895 | printf ("Test: %s\n", test_name); | |
896 | printf ("Result:\n"); | |
897 | printf (" is: %lld\n", computed); | |
898 | printf (" should be: %lld\n", expected); | |
899 | } | |
900 | ||
901 | update_stats (ok); | |
902 | out: | |
903 | fpstack_test (test_name); | |
48273d42 | 904 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
905 | errno = 0; |
906 | } | |
907 | ||
908 | ||
909 | /* Check that computed and expected values are equal (intmax_t values). */ | |
910 | void | |
911 | check_intmax_t (const char *test_name, intmax_t computed, | |
912 | intmax_t expected, int exceptions) | |
913 | { | |
914 | int ok = 0; | |
915 | int errno_value = errno; | |
916 | ||
917 | test_exceptions (test_name, exceptions); | |
918 | test_errno (test_name, errno_value, exceptions); | |
919 | if (exceptions & IGNORE_RESULT) | |
920 | goto out; | |
921 | noTests++; | |
922 | if (computed == expected) | |
923 | ok = 1; | |
924 | ||
925 | if (print_screen (ok)) | |
926 | { | |
927 | if (!ok) | |
928 | printf ("Failure:"); | |
929 | printf ("Test: %s\n", test_name); | |
930 | printf ("Result:\n"); | |
931 | printf (" is: %jd\n", computed); | |
932 | printf (" should be: %jd\n", expected); | |
933 | } | |
934 | ||
935 | update_stats (ok); | |
936 | out: | |
937 | fpstack_test (test_name); | |
48273d42 | 938 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
939 | errno = 0; |
940 | } | |
941 | ||
942 | ||
943 | /* Check that computed and expected values are equal (uintmax_t values). */ | |
944 | void | |
945 | check_uintmax_t (const char *test_name, uintmax_t computed, | |
946 | uintmax_t expected, int exceptions) | |
947 | { | |
948 | int ok = 0; | |
949 | int errno_value = errno; | |
950 | ||
951 | test_exceptions (test_name, exceptions); | |
952 | test_errno (test_name, errno_value, exceptions); | |
953 | if (exceptions & IGNORE_RESULT) | |
954 | goto out; | |
955 | noTests++; | |
956 | if (computed == expected) | |
957 | ok = 1; | |
958 | ||
959 | if (print_screen (ok)) | |
960 | { | |
961 | if (!ok) | |
962 | printf ("Failure:"); | |
963 | printf ("Test: %s\n", test_name); | |
964 | printf ("Result:\n"); | |
965 | printf (" is: %ju\n", computed); | |
966 | printf (" should be: %ju\n", expected); | |
967 | } | |
968 | ||
969 | update_stats (ok); | |
970 | out: | |
971 | fpstack_test (test_name); | |
48273d42 | 972 | feclearexcept (FE_ALL_EXCEPT); |
3b2f6032 JM |
973 | errno = 0; |
974 | } | |
975 | ||
976 | /* Return whether a test with flags EXCEPTIONS should be run. */ | |
977 | int | |
978 | enable_test (int exceptions) | |
979 | { | |
980 | if (exceptions & XFAIL_TEST) | |
981 | return 0; | |
31958338 JM |
982 | if ((!SNAN_TESTS (FLOAT) || !snan_tests_arg) |
983 | && (exceptions & TEST_SNAN) != 0) | |
3b2f6032 JM |
984 | return 0; |
985 | if (flag_test_mathvec && (exceptions & NO_TEST_MATHVEC) != 0) | |
986 | return 0; | |
987 | ||
988 | return 1; | |
989 | } | |
990 | ||
3b2f6032 JM |
991 | static void |
992 | initialize (void) | |
993 | { | |
994 | fpstack_test ("start *init*"); | |
995 | ||
996 | /* Clear all exceptions. From now on we must not get random exceptions. */ | |
997 | feclearexcept (FE_ALL_EXCEPT); | |
998 | errno = 0; | |
999 | ||
1000 | /* Test to make sure we start correctly. */ | |
1001 | fpstack_test ("end *init*"); | |
1002 | } | |
1003 | ||
1004 | /* Definitions of arguments for argp functions. */ | |
1005 | static const struct argp_option options[] = | |
1006 | { | |
1007 | { "verbose", 'v', "NUMBER", 0, "Level of verbosity (0..3)"}, | |
1008 | { "ulps-file", 'u', NULL, 0, "Output ulps to file ULPs"}, | |
1009 | { "no-max-error", 'f', NULL, 0, | |
1010 | "Don't output maximal errors of functions"}, | |
1011 | { "no-points", 'p', NULL, 0, | |
1012 | "Don't output results of functions invocations"}, | |
1013 | { "ignore-max-ulp", 'i', "yes/no", 0, | |
1014 | "Ignore given maximal errors"}, | |
1015 | { "output-dir", 'o', "DIR", 0, | |
1016 | "Directory where generated files will be placed"}, | |
1017 | { NULL, 0, NULL, 0, NULL } | |
1018 | }; | |
1019 | ||
1020 | /* Prototype for option handler. */ | |
1021 | static error_t parse_opt (int key, char *arg, struct argp_state *state); | |
1022 | ||
1023 | /* Data structure to communicate with argp functions. */ | |
1024 | static struct argp argp = | |
1025 | { | |
1026 | options, parse_opt, NULL, doc, | |
1027 | }; | |
1028 | ||
1029 | ||
1030 | /* Handle program arguments. */ | |
1031 | static error_t | |
1032 | parse_opt (int key, char *arg, struct argp_state *state) | |
1033 | { | |
1034 | switch (key) | |
1035 | { | |
1036 | case 'f': | |
1037 | output_max_error = 0; | |
1038 | break; | |
1039 | case 'i': | |
1040 | if (strcmp (arg, "yes") == 0) | |
1041 | ignore_max_ulp = 1; | |
1042 | else if (strcmp (arg, "no") == 0) | |
1043 | ignore_max_ulp = 0; | |
1044 | break; | |
1045 | case 'o': | |
1046 | output_dir = (char *) malloc (strlen (arg) + 1); | |
1047 | if (output_dir != NULL) | |
1048 | strcpy (output_dir, arg); | |
1049 | else | |
1050 | return errno; | |
1051 | break; | |
1052 | case 'p': | |
1053 | output_points = 0; | |
1054 | break; | |
1055 | case 'u': | |
1056 | output_ulps = 1; | |
1057 | break; | |
1058 | case 'v': | |
1059 | if (optarg) | |
1060 | verbose = (unsigned int) strtoul (optarg, NULL, 0); | |
1061 | else | |
1062 | verbose = 3; | |
1063 | break; | |
1064 | default: | |
1065 | return ARGP_ERR_UNKNOWN; | |
1066 | } | |
1067 | return 0; | |
1068 | } | |
1069 | ||
1070 | /* Verify that our ulp () implementation is behaving as expected | |
1071 | or abort. */ | |
1072 | static void | |
1073 | check_ulp (void) | |
1074 | { | |
1075 | FLOAT ulps, ulpx, value; | |
1076 | int i; | |
1077 | /* Check ulp of zero is a subnormal value... */ | |
1078 | ulps = ulp (0x0.0p0); | |
1079 | if (fpclassify (ulps) != FP_SUBNORMAL) | |
1080 | { | |
1081 | fprintf (stderr, "ulp (0x0.0p0) is not FP_SUBNORMAL!\n"); | |
1082 | exit (EXIT_FAILURE); | |
1083 | } | |
1084 | /* Check that the ulp of one is a normal value... */ | |
4f5a9aff | 1085 | ulps = ulp (LIT(1.0)); |
3b2f6032 JM |
1086 | if (fpclassify (ulps) != FP_NORMAL) |
1087 | { | |
1088 | fprintf (stderr, "ulp (1.0L) is not FP_NORMAL\n"); | |
1089 | exit (EXIT_FAILURE); | |
1090 | } | |
1091 | ||
1092 | /* Compute the next subnormal value using nextafter to validate ulp. | |
1093 | We allow +/- 1 ulp around the represented value. */ | |
1094 | value = FUNC(nextafter) (0, 1); | |
1095 | ulps = ULPDIFF (value, 0); | |
4f5a9aff TMQMF |
1096 | ulpx = ulp (LIT(1.0)); |
1097 | if (ulps < (LIT(1.0) - ulpx) || ulps > (LIT(1.0) + ulpx)) | |
3b2f6032 JM |
1098 | { |
1099 | fprintf (stderr, "Value outside of 1 +/- 1ulp.\n"); | |
1100 | exit (EXIT_FAILURE); | |
1101 | } | |
1102 | /* Compute the nearest representable number from 10 towards 20. | |
1103 | The result is 10 + 1ulp. We use this to check the ulp function. | |
1104 | We allow +/- 1 ulp around the represented value. */ | |
1105 | value = FUNC(nextafter) (10, 20); | |
1106 | ulps = ULPDIFF (value, 10); | |
4f5a9aff TMQMF |
1107 | ulpx = ulp (LIT(1.0)); |
1108 | if (ulps < (LIT(1.0) - ulpx) || ulps > (LIT(1.0) + ulpx)) | |
3b2f6032 JM |
1109 | { |
1110 | fprintf (stderr, "Value outside of 1 +/- 1ulp.\n"); | |
1111 | exit (EXIT_FAILURE); | |
1112 | } | |
1113 | /* This gives one more ulp. */ | |
1114 | value = FUNC(nextafter) (value, 20); | |
1115 | ulps = ULPDIFF (value, 10); | |
4f5a9aff TMQMF |
1116 | ulpx = ulp (LIT(2.0)); |
1117 | if (ulps < (LIT(2.0) - ulpx) || ulps > (LIT(2.0) + ulpx)) | |
3b2f6032 JM |
1118 | { |
1119 | fprintf (stderr, "Value outside of 2 +/- 1ulp.\n"); | |
1120 | exit (EXIT_FAILURE); | |
1121 | } | |
1122 | /* And now calculate 100 ulp. */ | |
1123 | for (i = 2; i < 100; i++) | |
1124 | value = FUNC(nextafter) (value, 20); | |
1125 | ulps = ULPDIFF (value, 10); | |
4f5a9aff TMQMF |
1126 | ulpx = ulp (LIT(100.0)); |
1127 | if (ulps < (LIT(100.0) - ulpx) || ulps > (LIT(100.0) + ulpx)) | |
3b2f6032 JM |
1128 | { |
1129 | fprintf (stderr, "Value outside of 100 +/- 1ulp.\n"); | |
1130 | exit (EXIT_FAILURE); | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* Do all initialization for a test run with arguments given by ARGC | |
1135 | and ARGV. */ | |
1136 | void | |
1137 | libm_test_init (int argc, char **argv) | |
1138 | { | |
1139 | int remaining; | |
1140 | char *ulps_file_path; | |
1141 | size_t dir_len = 0; | |
1142 | ||
1143 | verbose = 1; | |
1144 | output_ulps = 0; | |
1145 | output_max_error = 1; | |
1146 | output_points = 1; | |
1147 | output_dir = NULL; | |
1148 | /* XXX set to 0 for releases. */ | |
1149 | ignore_max_ulp = 0; | |
1150 | ||
1151 | /* Parse and process arguments. */ | |
1152 | argp_parse (&argp, argc, argv, 0, &remaining, NULL); | |
1153 | ||
1154 | if (remaining != argc) | |
1155 | { | |
1156 | fprintf (stderr, "wrong number of arguments"); | |
1157 | argp_help (&argp, stdout, ARGP_HELP_SEE, program_invocation_short_name); | |
1158 | exit (EXIT_FAILURE); | |
1159 | } | |
1160 | ||
1161 | if (output_ulps) | |
1162 | { | |
1163 | if (output_dir != NULL) | |
1164 | dir_len = strlen (output_dir); | |
1165 | ulps_file_path = (char *) malloc (dir_len + strlen (ulps_file_name) + 1); | |
1166 | if (ulps_file_path == NULL) | |
1167 | { | |
1168 | perror ("can't allocate path for `ULPs' file: "); | |
1169 | exit (1); | |
1170 | } | |
1171 | sprintf (ulps_file_path, "%s%s", output_dir == NULL ? "" : output_dir, ulps_file_name); | |
1172 | ulps_file = fopen (ulps_file_path, "a"); | |
1173 | if (ulps_file == NULL) | |
1174 | { | |
1175 | perror ("can't open file `ULPs' for writing: "); | |
1176 | exit (1); | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | ||
1181 | initialize (); | |
1182 | fputs (test_msg, stdout); | |
1183 | ||
3b2f6032 JM |
1184 | check_ulp (); |
1185 | } | |
1186 | ||
1187 | /* Process the test results, returning the exit status. */ | |
1188 | int | |
1189 | libm_test_finish (void) | |
1190 | { | |
1191 | if (output_ulps) | |
1192 | fclose (ulps_file); | |
1193 | ||
1194 | printf ("\nTest suite completed:\n"); | |
1195 | printf (" %d test cases plus %d tests for exception flags and\n" | |
1196 | " %d tests for errno executed.\n", | |
1197 | noTests, noExcTests, noErrnoTests); | |
1198 | if (noErrors) | |
1199 | { | |
1200 | printf (" %d errors occurred.\n", noErrors); | |
1201 | return 1; | |
1202 | } | |
1203 | printf (" All tests passed successfully.\n"); | |
1204 | ||
1205 | return 0; | |
1206 | } |