1 // This module does unit testing of m_libcbase.
2
3 #include <assert.h>
4 #include <stdio.h>
5 #include <stdlib.h>
6
7 #include "pub_tool_basics.h" /* UInt et al, needed for pub_tool_vki.h */
8 #include "pub_tool_vki.h"
9 #include "m_libcbase.c"
10
11 #define CHECK(x) \
12 if (!x) { fprintf(stderr, "failure: %s:%d\n", __FILE__, __LINE__); }
13
14
test_VG_STREQ(void)15 void test_VG_STREQ(void)
16 {
17 CHECK( ! VG_STREQ(NULL, NULL) ); // Nb: strcmp() considers these equal
18 CHECK( ! VG_STREQ(NULL, "ab") ); // Nb: strcmp() seg faults on this
19 CHECK( ! VG_STREQ("ab", NULL) ); // Nb: strcmp() seg faults on this
20 CHECK( ! VG_STREQ("", "a") );
21 CHECK( ! VG_STREQ("a", "") );
22 CHECK( ! VG_STREQ("abc", "abcd"));
23 CHECK( ! VG_STREQ("abcd", "abc") );
24 CHECK( ! VG_STREQ("Abcd", "abcd"));
25 CHECK( ! VG_STREQ("abcd", "Abcd"));
26
27 CHECK( VG_STREQ("", "") );
28 CHECK( VG_STREQ("a", "a") );
29 CHECK( VG_STREQ("abcd", "abcd") );
30 }
31
test_VG_STREQN(void)32 void test_VG_STREQN(void)
33 {
34 CHECK( ! VG_STREQN(0, NULL, NULL) );
35 CHECK( ! VG_STREQN(5, NULL, NULL) );
36 CHECK( ! VG_STREQN(0, NULL, "ab") );
37 CHECK( ! VG_STREQN(5, NULL, "ab") );
38 CHECK( ! VG_STREQN(0, "ab", NULL) );
39 CHECK( ! VG_STREQN(1, "", "a") );
40 CHECK( ! VG_STREQN(1, "a", "") );
41 CHECK( ! VG_STREQN(4, "abc", "abcd"));
42 CHECK( ! VG_STREQN(4, "abcd", "abc") );
43 CHECK( ! VG_STREQN(1, "Abcd", "abcd"));
44 CHECK( ! VG_STREQN(4, "Abcd", "abcd"));
45 CHECK( ! VG_STREQN(4, "abcd", "abce"));
46 CHECK( ! VG_STREQN(9, "abcd", "abce"));
47
48 CHECK( VG_STREQN(0, "", "") );
49 CHECK( VG_STREQN(1, "", "") );
50 CHECK( VG_STREQN(0, "a", "a") );
51 CHECK( VG_STREQN(1, "a", "a") );
52 CHECK( VG_STREQN(2, "a", "a") );
53 CHECK( VG_STREQN(9, "a", "a") );
54 CHECK( VG_STREQN(1, "ab", "ac"));
55 CHECK( VG_STREQN(3, "abcd", "abce"));
56 }
57
58 // On PPC/Linux VKI_PAGE_SIZE is a variable, not a macro.
59 #if defined(VGP_ppc32_linux) || defined(VGP_ppc64_linux)
60 unsigned long VKI_PAGE_SIZE = 1UL << 12;
61 #endif
62
test_VG_IS_XYZ_ALIGNED(void)63 void test_VG_IS_XYZ_ALIGNED(void)
64 {
65 CHECK( VG_IS_2_ALIGNED(0x0) );
66 CHECK( ! VG_IS_2_ALIGNED(0x1) );
67 CHECK( VG_IS_2_ALIGNED(0x2) );
68 CHECK( ! VG_IS_2_ALIGNED(0x3) );
69 CHECK( VG_IS_2_ALIGNED(0x4) );
70 CHECK( ! VG_IS_2_ALIGNED(0x5) );
71 CHECK( VG_IS_2_ALIGNED(0x6) );
72 CHECK( ! VG_IS_2_ALIGNED(0x7) );
73 CHECK( VG_IS_2_ALIGNED(0x8) );
74 CHECK( ! VG_IS_2_ALIGNED(0x9) );
75 CHECK( VG_IS_2_ALIGNED(0xa) );
76 CHECK( ! VG_IS_2_ALIGNED(0xb) );
77 CHECK( VG_IS_2_ALIGNED(0xc) );
78 CHECK( ! VG_IS_2_ALIGNED(0xd) );
79 CHECK( VG_IS_2_ALIGNED(0xe) );
80 CHECK( ! VG_IS_2_ALIGNED(0xf) );
81
82 CHECK( VG_IS_4_ALIGNED(0x0) );
83 CHECK( ! VG_IS_4_ALIGNED(0x1) );
84 CHECK( ! VG_IS_4_ALIGNED(0x2) );
85 CHECK( ! VG_IS_4_ALIGNED(0x3) );
86 CHECK( VG_IS_4_ALIGNED(0x4) );
87 CHECK( ! VG_IS_4_ALIGNED(0x5) );
88 CHECK( ! VG_IS_4_ALIGNED(0x6) );
89 CHECK( ! VG_IS_4_ALIGNED(0x7) );
90 CHECK( VG_IS_4_ALIGNED(0x8) );
91 CHECK( ! VG_IS_4_ALIGNED(0x9) );
92 CHECK( ! VG_IS_4_ALIGNED(0xa) );
93 CHECK( ! VG_IS_4_ALIGNED(0xb) );
94 CHECK( VG_IS_4_ALIGNED(0xc) );
95 CHECK( ! VG_IS_4_ALIGNED(0xd) );
96 CHECK( ! VG_IS_4_ALIGNED(0xe) );
97 CHECK( ! VG_IS_4_ALIGNED(0xf) );
98
99 CHECK( VG_IS_8_ALIGNED(0x0) );
100 CHECK( ! VG_IS_8_ALIGNED(0x1) );
101 CHECK( ! VG_IS_8_ALIGNED(0x2) );
102 CHECK( ! VG_IS_8_ALIGNED(0x3) );
103 CHECK( ! VG_IS_8_ALIGNED(0x4) );
104 CHECK( ! VG_IS_8_ALIGNED(0x5) );
105 CHECK( ! VG_IS_8_ALIGNED(0x6) );
106 CHECK( ! VG_IS_8_ALIGNED(0x7) );
107 CHECK( VG_IS_8_ALIGNED(0x8) );
108 CHECK( ! VG_IS_8_ALIGNED(0x9) );
109 CHECK( ! VG_IS_8_ALIGNED(0xa) );
110 CHECK( ! VG_IS_8_ALIGNED(0xb) );
111 CHECK( ! VG_IS_8_ALIGNED(0xc) );
112 CHECK( ! VG_IS_8_ALIGNED(0xd) );
113 CHECK( ! VG_IS_8_ALIGNED(0xe) );
114 CHECK( ! VG_IS_8_ALIGNED(0xf) );
115
116 CHECK( VG_IS_16_ALIGNED(0x0) );
117 CHECK( ! VG_IS_16_ALIGNED(0x1) );
118 CHECK( ! VG_IS_16_ALIGNED(0x2) );
119 CHECK( ! VG_IS_16_ALIGNED(0x3) );
120 CHECK( ! VG_IS_16_ALIGNED(0x4) );
121 CHECK( ! VG_IS_16_ALIGNED(0x5) );
122 CHECK( ! VG_IS_16_ALIGNED(0x6) );
123 CHECK( ! VG_IS_16_ALIGNED(0x7) );
124 CHECK( ! VG_IS_16_ALIGNED(0x8) );
125 CHECK( ! VG_IS_16_ALIGNED(0x9) );
126 CHECK( ! VG_IS_16_ALIGNED(0xa) );
127 CHECK( ! VG_IS_16_ALIGNED(0xb) );
128 CHECK( ! VG_IS_16_ALIGNED(0xc) );
129 CHECK( ! VG_IS_16_ALIGNED(0xd) );
130 CHECK( ! VG_IS_16_ALIGNED(0xe) );
131 CHECK( ! VG_IS_16_ALIGNED(0xf) );
132
133 CHECK( VG_IS_WORD_ALIGNED(0x0) );
134 CHECK( ! VG_IS_WORD_ALIGNED(0x1) );
135 CHECK( ! VG_IS_WORD_ALIGNED(0x2) );
136 CHECK( ! VG_IS_WORD_ALIGNED(0x3) );
137 // 0x4 case below
138 CHECK( ! VG_IS_WORD_ALIGNED(0x5) );
139 CHECK( ! VG_IS_WORD_ALIGNED(0x6) );
140 CHECK( ! VG_IS_WORD_ALIGNED(0x7) );
141 CHECK( VG_IS_WORD_ALIGNED(0x8) );
142 CHECK( ! VG_IS_WORD_ALIGNED(0x9) );
143 CHECK( ! VG_IS_WORD_ALIGNED(0xa) );
144 CHECK( ! VG_IS_WORD_ALIGNED(0xb) );
145 // 0xc case below
146 CHECK( ! VG_IS_WORD_ALIGNED(0xd) );
147 CHECK( ! VG_IS_WORD_ALIGNED(0xe) );
148 CHECK( ! VG_IS_WORD_ALIGNED(0xf) );
149 if (4 == sizeof(void*)) {
150 CHECK( VG_IS_WORD_ALIGNED(0x4) );
151 CHECK( VG_IS_WORD_ALIGNED(0xc) );
152 } else if (8 == sizeof(void*)) {
153 CHECK( ! VG_IS_WORD_ALIGNED(0x4) );
154 CHECK( ! VG_IS_WORD_ALIGNED(0xc) );
155 } else {
156 assert(0);
157 }
158
159 CHECK( VG_IS_PAGE_ALIGNED(0x0) );
160 CHECK( ! VG_IS_PAGE_ALIGNED(0x1) );
161 CHECK( ! VG_IS_PAGE_ALIGNED(0x2) );
162 CHECK( ! VG_IS_PAGE_ALIGNED(0x3) );
163 CHECK( ! VG_IS_PAGE_ALIGNED(0x4) );
164 CHECK( ! VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE-1) );
165 CHECK( VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE ) );
166 CHECK( ! VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE+1) );
167 }
168
test_VG_ROUND_et_al()169 void test_VG_ROUND_et_al()
170 {
171 CHECK( 0 == VG_ROUNDDN(0, 1) );
172 CHECK( 1 == VG_ROUNDDN(1, 1) );
173 CHECK( 2 == VG_ROUNDDN(2, 1) );
174 CHECK( 3 == VG_ROUNDDN(3, 1) );
175 CHECK( 4 == VG_ROUNDDN(4, 1) );
176 CHECK( 5 == VG_ROUNDDN(5, 1) );
177 CHECK( 6 == VG_ROUNDDN(6, 1) );
178 CHECK( 7 == VG_ROUNDDN(7, 1) );
179
180 CHECK( 0 == VG_ROUNDUP(0, 1) );
181 CHECK( 1 == VG_ROUNDUP(1, 1) );
182 CHECK( 2 == VG_ROUNDUP(2, 1) );
183 CHECK( 3 == VG_ROUNDUP(3, 1) );
184 CHECK( 4 == VG_ROUNDUP(4, 1) );
185 CHECK( 5 == VG_ROUNDUP(5, 1) );
186 CHECK( 6 == VG_ROUNDUP(6, 1) );
187 CHECK( 7 == VG_ROUNDUP(7, 1) );
188
189 CHECK( 0 == VG_ROUNDDN(0, 2) );
190 CHECK( 0 == VG_ROUNDDN(1, 2) );
191 CHECK( 2 == VG_ROUNDDN(2, 2) );
192 CHECK( 2 == VG_ROUNDDN(3, 2) );
193 CHECK( 4 == VG_ROUNDDN(4, 2) );
194 CHECK( 4 == VG_ROUNDDN(5, 2) );
195 CHECK( 6 == VG_ROUNDDN(6, 2) );
196 CHECK( 6 == VG_ROUNDDN(7, 2) );
197
198 CHECK( 0 == VG_ROUNDUP(0, 2) );
199 CHECK( 2 == VG_ROUNDUP(1, 2) );
200 CHECK( 2 == VG_ROUNDUP(2, 2) );
201 CHECK( 4 == VG_ROUNDUP(3, 2) );
202 CHECK( 4 == VG_ROUNDUP(4, 2) );
203 CHECK( 6 == VG_ROUNDUP(5, 2) );
204 CHECK( 6 == VG_ROUNDUP(6, 2) );
205 CHECK( 8 == VG_ROUNDUP(7, 2) );
206
207 CHECK( 0 == VG_ROUNDDN(0, 4) );
208 CHECK( 0 == VG_ROUNDDN(1, 4) );
209 CHECK( 0 == VG_ROUNDDN(2, 4) );
210 CHECK( 0 == VG_ROUNDDN(3, 4) );
211 CHECK( 4 == VG_ROUNDDN(4, 4) );
212 CHECK( 4 == VG_ROUNDDN(5, 4) );
213 CHECK( 4 == VG_ROUNDDN(6, 4) );
214 CHECK( 4 == VG_ROUNDDN(7, 4) );
215
216 CHECK( 0 == VG_ROUNDUP(0, 4) );
217 CHECK( 4 == VG_ROUNDUP(1, 4) );
218 CHECK( 4 == VG_ROUNDUP(2, 4) );
219 CHECK( 4 == VG_ROUNDUP(3, 4) );
220 CHECK( 4 == VG_ROUNDUP(4, 4) );
221 CHECK( 8 == VG_ROUNDUP(5, 4) );
222 CHECK( 8 == VG_ROUNDUP(6, 4) );
223 CHECK( 8 == VG_ROUNDUP(7, 4) );
224
225 CHECK( 0 == VG_ROUNDDN(0, 8) );
226 CHECK( 0 == VG_ROUNDDN(1, 8) );
227 CHECK( 0 == VG_ROUNDDN(2, 8) );
228 CHECK( 0 == VG_ROUNDDN(3, 8) );
229 CHECK( 0 == VG_ROUNDDN(4, 8) );
230 CHECK( 0 == VG_ROUNDDN(5, 8) );
231 CHECK( 0 == VG_ROUNDDN(6, 8) );
232 CHECK( 0 == VG_ROUNDDN(7, 8) );
233
234 CHECK( 0 == VG_ROUNDUP(0, 8) );
235 CHECK( 8 == VG_ROUNDUP(1, 8) );
236 CHECK( 8 == VG_ROUNDUP(2, 8) );
237 CHECK( 8 == VG_ROUNDUP(3, 8) );
238 CHECK( 8 == VG_ROUNDUP(4, 8) );
239 CHECK( 8 == VG_ROUNDUP(5, 8) );
240 CHECK( 8 == VG_ROUNDUP(6, 8) );
241 CHECK( 8 == VG_ROUNDUP(7, 8) );
242
243 CHECK( 0 == VG_PGROUNDDN(0) );
244 CHECK( 0 == VG_PGROUNDDN(1) );
245 CHECK( 0 == VG_PGROUNDDN(2) );
246 CHECK( 0 == VG_PGROUNDDN(3) );
247 CHECK( 0 == VG_PGROUNDDN(4) );
248 CHECK( 0 == VG_PGROUNDDN(VKI_PAGE_SIZE-1) );
249 CHECK( VKI_PAGE_SIZE == VG_PGROUNDDN(VKI_PAGE_SIZE ) );
250 CHECK( VKI_PAGE_SIZE == VG_PGROUNDDN(VKI_PAGE_SIZE+1) );
251
252 CHECK( 0 == VG_PGROUNDUP(0) );
253 CHECK( VKI_PAGE_SIZE == VG_PGROUNDUP(1) );
254 CHECK( VKI_PAGE_SIZE == VG_PGROUNDUP(2) );
255 CHECK( VKI_PAGE_SIZE == VG_PGROUNDUP(3) );
256 CHECK( VKI_PAGE_SIZE == VG_PGROUNDUP(4) );
257 CHECK( VKI_PAGE_SIZE == VG_PGROUNDUP(VKI_PAGE_SIZE-1) );
258 CHECK( VKI_PAGE_SIZE == VG_PGROUNDUP(VKI_PAGE_SIZE ) );
259 CHECK( VKI_PAGE_SIZE*2 == VG_PGROUNDUP(VKI_PAGE_SIZE+1) );
260 }
261
test_isspace(void)262 void test_isspace(void)
263 {
264 CHECK( VG_(isspace)(' ') );
265 CHECK( VG_(isspace)('\n') );
266 CHECK( VG_(isspace)('\t') );
267 CHECK( ! VG_(isspace)('3') );
268 CHECK( ! VG_(isspace)('x') );
269 }
270
test_isdigit(void)271 void test_isdigit(void)
272 {
273 CHECK( VG_(isdigit)('0') );
274 CHECK( VG_(isdigit)('1') );
275 CHECK( VG_(isdigit)('5') );
276 CHECK( VG_(isdigit)('9') );
277 CHECK( ! VG_(isdigit)('a') );
278 CHECK( ! VG_(isdigit)('!') );
279 }
280
test_is_dec_digit()281 void test_is_dec_digit()
282 {
283 Long x;
284 CHECK( is_dec_digit('0', &x) && 0 == x );
285 CHECK( is_dec_digit('1', &x) && 1 == x );
286 CHECK( is_dec_digit('9', &x) && 9 == x );
287 }
288
test_is_hex_digit()289 void test_is_hex_digit()
290 {
291 Long x;
292 CHECK( is_hex_digit('0', &x) && 0 == x );
293 CHECK( is_hex_digit('1', &x) && 1 == x );
294 CHECK( is_hex_digit('9', &x) && 9 == x );
295 CHECK( is_hex_digit('a', &x) && 10 == x );
296 CHECK( is_hex_digit('f', &x) && 15 == x );
297 CHECK( is_hex_digit('A', &x) && 10 == x );
298 CHECK( is_hex_digit('F', &x) && 15 == x );
299 }
300
test_strtoll_and_strtod(void)301 void test_strtoll_and_strtod(void)
302 {
303 // For VG_(strtoll*)()
304 typedef struct {
305 Char* str; // The string to convert.
306 Long res; // The result.
307 Char endptr_val; // The char one past the end of the converted text.
308 } StrtollInputs;
309
310 // VG_(strtoll10)()
311 {
312 StrtollInputs a[] = {
313 // If there's no number at the head of the string, return 0, and
314 // make 'endptr' point to the start of the string.
315 { .str = "", .res = 0, .endptr_val = '\0' },
316 { .str = " \n\t", .res = 0, .endptr_val = ' ' },
317 { .str = "one", .res = 0, .endptr_val = 'o' },
318 { .str = "\ntwo", .res = 0, .endptr_val = '\n' },
319
320 // Successful conversion. Leading whitespace is ignored. A single
321 // '-' or '+' is accepted.
322 { .str = "0", .res = 0, .endptr_val = '\0' },
323 { .str = "+0", .res = 0, .endptr_val = '\0' },
324 { .str = "-0", .res = 0, .endptr_val = '\0' },
325 { .str = "1", .res = 1, .endptr_val = '\0' },
326 { .str = "+1", .res = 1, .endptr_val = '\0' },
327 { .str = "-1", .res = -1, .endptr_val = '\0' },
328 { .str = "12", .res = 12, .endptr_val = '\0' },
329 { .str = "-567", .res = -567, .endptr_val = '\0' },
330 { .str = "1234567", .res = 1234567, .endptr_val = '\0' },
331 { .str = "007", .res = 7, .endptr_val = '\0' },
332 { .str = " +42", .res = 42, .endptr_val = '\0' },
333 { .str = "\n\t\r\v -56", .res = -56, .endptr_val = '\0' },
334 { .str = "123xyz", .res = 123, .endptr_val = 'x' },
335 { .str = " -123abc", .res = -123, .endptr_val = 'a' },
336
337 // Whitespace after the +/- is not allowed; conversion fails.
338 { .str = "+ 1", .res = 0, .endptr_val = '+' },
339 { .str = "-\n1", .res = 0, .endptr_val = '-' },
340 };
341
342 // Nb: We test the results against strtoll() as well.
343 int i;
344 for (i = 0; i < (sizeof(a) / sizeof(StrtollInputs)); i++) {
345 Char* endptr1;
346 char* endptr2;
347 Long res1 = VG_(strtoll10)(a[i].str, &endptr1);
348 long long res2 = strtoll (a[i].str, &endptr2, 10);
349 //printf("res1 = %lld, *endptr1 = '%c'\n", res1, *endptr1);
350 //printf("res2 = %lld, *endptr2 = '%c'\n", res2, *endptr2);
351 CHECK(a[i].res == res1 && a[i].endptr_val == *endptr1);
352 CHECK(res2 == res1 && *endptr2 == *endptr1);
353 }
354 }
355
356 // VG_(strtoll16)()
357 {
358 StrtollInputs a[] = {
359 // If there's no number at the head of the string, return 0, and
360 // make 'endptr' point to the start of the string.
361 { .str = "", .res = 0, .endptr_val = '\0' },
362 { .str = " \n\t", .res = 0, .endptr_val = ' ' },
363 { .str = "one", .res = 0, .endptr_val = 'o' },
364 { .str = "\ntwo", .res = 0, .endptr_val = '\n' },
365
366 // Successful conversion. Leading whitespace is ignored. A single
367 // '-' or '+' is accepted. "0X" and "0x" are also allowed at the
368 // front, but if no digits follow, just the "0" is converted.
369 { .str = "0", .res = 0, .endptr_val = '\0' },
370 { .str = "0x0", .res = 0, .endptr_val = '\0' },
371 { .str = "0X0", .res = 0, .endptr_val = '\0' },
372 { .str = "0x", .res = 0, .endptr_val = 'x' },
373 { .str = "0Xg", .res = 0, .endptr_val = 'X' },
374 { .str = "0", .res = 0, .endptr_val = '\0' },
375 { .str = "+0", .res = 0, .endptr_val = '\0' },
376 { .str = "-0", .res = 0, .endptr_val = '\0' },
377 { .str = "1", .res = 1, .endptr_val = '\0' },
378 { .str = "+1", .res = 1, .endptr_val = '\0' },
379 { .str = "-1", .res = -1, .endptr_val = '\0' },
380 { .str = "1a", .res = 26, .endptr_val = '\0' },
381 { .str = "-5F7", .res = -1527, .endptr_val = '\0' },
382 { .str = "0x1234567", .res = 19088743, .endptr_val = '\0' },
383 { .str = "007", .res = 7, .endptr_val = '\0' },
384 { .str = "0X00ABCD", .res = 43981, .endptr_val = '\0' },
385 { .str = " +AbC", .res = 2748, .endptr_val = '\0' },
386 { .str = " -0xAbC", .res = -2748, .endptr_val = '\0' },
387 { .str = " -0xxx", .res = 0, .endptr_val = 'x' },
388 { .str = "\n\t\r\v -56", .res = -86, .endptr_val = '\0' },
389 { .str = "123xyz", .res = 291, .endptr_val = 'x' },
390 { .str = " -123defghi", .res = -1195503, .endptr_val = 'g' },
391
392 // Whitespace after the +/- is not allowed; conversion fails.
393 { .str = "+ 1", .res = 0, .endptr_val = '+' },
394 { .str = "-\n0x1", .res = 0, .endptr_val = '-' },
395 };
396
397 // Nb: We test the results against strtoll() as well.
398 int i;
399 for (i = 0; i < (sizeof(a) / sizeof(StrtollInputs)); i++) {
400 Char* endptr1;
401 char* endptr2;
402 Long res1 = VG_(strtoll16)(a[i].str, &endptr1);
403 long long res2 = strtoll (a[i].str, &endptr2, 16);
404 //printf(" res1 = %lld, *endptr1 = '%c'\n", res1, *endptr1);
405 //printf(" res2 = %lld, *endptr2 = '%c'\n", res2, *endptr2);
406 CHECK(a[i].res == res1 && a[i].endptr_val == *endptr1);
407 CHECK(res2 == res1 && *endptr2 == *endptr1);
408 }
409 }
410
411 // VG_(strtod)()
412 // XXX: todo
413 }
414
test_log2(void)415 void test_log2(void)
416 {
417 CHECK( -1 == VG_(log2)(0) );
418 CHECK( 0 == VG_(log2)(1) );
419 CHECK( 1 == VG_(log2)(2) );
420 CHECK( -1 == VG_(log2)(3) );
421 CHECK( 2 == VG_(log2)(4) );
422 CHECK( -1 == VG_(log2)(5) );
423 CHECK( -1 == VG_(log2)(6) );
424 CHECK( -1 == VG_(log2)(7) );
425 CHECK( 3 == VG_(log2)(8) );
426
427 CHECK( -1 == VG_(log2)( 15) );
428 CHECK( 4 == VG_(log2)( 16) );
429 CHECK( -1 == VG_(log2)( 17) );
430
431 CHECK( -1 == VG_(log2)( 63) );
432 CHECK( 6 == VG_(log2)( 64) );
433 CHECK( -1 == VG_(log2)( 65) );
434
435 CHECK( -1 == VG_(log2)(255) );
436 CHECK( 8 == VG_(log2)(256) );
437 CHECK( -1 == VG_(log2)(257) );
438
439 CHECK( -1 == VG_(log2)(65535) );
440 CHECK( 16 == VG_(log2)(65536) );
441 CHECK( -1 == VG_(log2)(65537) );
442
443 CHECK( -1 == VG_(log2)(16777215) );
444 CHECK( 24 == VG_(log2)(16777216) );
445 CHECK( -1 == VG_(log2)(16777217) );
446
447 CHECK( -1 == VG_(log2)(2147483647U) );
448 CHECK( 31 == VG_(log2)(2147483648U) );
449 CHECK( -1 == VG_(log2)(2147483649U) );
450
451 CHECK( -1 == VG_(log2)(4294967295U) ); // Max UInt
452 }
453
test_random(void)454 void test_random(void)
455 {
456 // Hmm, it's really hard to unit test a pseudo-random number generator.
457 // So no testing here, sorry.
458 }
459
460 //-----------------------------------------------------------------------
461 // main
462 //-----------------------------------------------------------------------
463
main(void)464 int main(void)
465 {
466 // Nb: the order of the tests is based on the order of the code in
467 // m_libcbase.c, except that macros defined in pub_tool_libcbase.h are
468 // tested first.
469
470 //--------------------------------------------------------------------
471 // pub_tool_libcbase.h macros
472 //--------------------------------------------------------------------
473 test_VG_STREQ();
474 test_VG_STREQN();
475 test_VG_IS_XYZ_ALIGNED();
476 test_VG_ROUND_et_al();
477
478 //--------------------------------------------------------------------
479 // Char functions
480 //--------------------------------------------------------------------
481 test_isspace();
482 test_isdigit();
483
484 //--------------------------------------------------------------------
485 // String-to-number functions
486 //--------------------------------------------------------------------
487 test_is_dec_digit();
488 test_is_hex_digit();
489 test_strtoll_and_strtod();
490
491 //--------------------------------------------------------------------
492 // String functions
493 //--------------------------------------------------------------------
494 // XXX: more todo: VG_(str_*)
495
496 //--------------------------------------------------------------------
497 // Mem functions
498 //--------------------------------------------------------------------
499 // XXX: todo: VG_(mem*)
500
501 //--------------------------------------------------------------------
502 // Miscellaneous functions
503 //--------------------------------------------------------------------
504 // XXX: todo: VG_(ssort)
505 test_log2();
506 test_random();
507
508 return 0;
509 }
510
511