1 /* Test and measure memset functions.
2 Copyright (C) 1999-2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Jakub Jelinek <jakub@redhat.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
22 # define TEST_NAME "bzero"
24 # define TEST_NAME "memset"
26 #define MIN_PAGE_SIZE 131072
27 #include "test-string.h"
29 char *simple_memset (char *, int, size_t);
32 typedef void (*proto_t
) (char *, size_t);
33 void simple_bzero (char *, size_t);
34 void builtin_bzero (char *, size_t);
36 IMPL (simple_bzero
, 0)
37 IMPL (builtin_bzero
, 0)
41 simple_bzero (char *s
, size_t n
)
43 simple_memset (s
, 0, n
);
47 builtin_bzero (char *s
, size_t n
)
49 __builtin_bzero (s
, n
);
52 typedef char *(*proto_t
) (char *, int, size_t);
53 char *builtin_memset (char *, int, size_t);
55 IMPL (simple_memset
, 0)
56 IMPL (builtin_memset
, 0)
60 builtin_memset (char *s
, int c
, size_t n
)
62 return __builtin_memset (s
, c
, n
);
67 simple_memset (char *s
, int c
, size_t n
)
69 char *r
= s
, *end
= s
+ n
;
76 do_one_test (impl_t
*impl
, char *s
, int c
__attribute ((unused
)), size_t n
)
80 simple_bzero (tstbuf
, n
);
82 if (memcmp (s
, tstbuf
, n
) != 0)
84 char *res
= CALL (impl
, s
, c
, n
);
86 || simple_memset (tstbuf
, c
, n
) != tstbuf
87 || memcmp (s
, tstbuf
, n
) != 0)
90 error (0, 0, "Wrong result in function %s", impl
->name
);
97 hp_timing_t start
__attribute ((unused
));
98 hp_timing_t stop
__attribute ((unused
));
99 hp_timing_t best_time
= ~ (hp_timing_t
) 0;
102 for (i
= 0; i
< 32; ++i
)
104 HP_TIMING_NOW (start
);
108 CALL (impl
, s
, c
, n
);
111 HP_TIMING_NOW (stop
);
112 HP_TIMING_BEST (best_time
, start
, stop
);
115 printf ("\t%zd", (size_t) best_time
);
120 do_test (size_t align
, int c
, size_t len
)
123 if (align
+ len
> page_size
)
127 printf ("Length %4zd, alignment %2zd, c %2d:", len
, align
, c
);
129 FOR_EACH_IMPL (impl
, 0)
130 do_one_test (impl
, (char *) buf1
+ align
, c
, len
);
138 do_random_tests (void)
140 size_t i
, j
, k
, n
, align
, len
, size
;
142 unsigned char *p
, *res
;
144 for (i
= 0; i
< 65536; ++i
)
145 buf2
[i
] = random () & 255;
147 for (n
= 0; n
< ITERATIONS
; n
++)
149 if ((random () & 31) == 0)
153 p
= buf1
+ page_size
- size
;
154 len
= random () & (size
- 1);
155 align
= size
- len
- (random () & 31);
158 if ((random () & 7) == 0)
160 if ((random () & 7) == 0)
167 j
= len
+ align
+ 128;
174 for (i
= k
; i
< align
; ++i
)
176 for (i
= align
+ len
; i
< j
; ++i
)
179 FOR_EACH_IMPL (impl
, 1)
181 for (i
= 0; i
< len
; ++i
)
183 p
[i
+ align
] = buf2
[i
];
184 if (p
[i
+ align
] == c
)
187 res
= (unsigned char *) CALL (impl
, (char *) p
+ align
, c
, len
);
188 if (res
!= p
+ align
)
190 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd) %p != %p",
191 n
, impl
->name
, align
, c
, len
, res
, p
+ align
);
194 for (i
= k
; i
< align
; ++i
)
197 error (0, 0, "Iteration %zd - garbage before %s (%zd, %d, %zd)",
198 n
, impl
->name
, align
, c
, len
);
202 for (; i
< align
+ len
; ++i
)
205 error (0, 0, "Iteration %zd - not cleared correctly %s (%zd, %d, %zd)",
206 n
, impl
->name
, align
, c
, len
);
213 error (0, 0, "Iteration %zd - garbage after %s (%zd, %d, %zd)",
214 n
, impl
->name
, align
, c
, len
);
232 FOR_EACH_IMPL (impl
, 0)
233 printf ("\t%s", impl
->name
);
237 for (c
= -65; c
<= 130; c
+= 65)
240 for (i
= 0; i
< 18; ++i
)
241 do_test (0, c
, 1 << i
);
242 for (i
= 1; i
< 32; ++i
)
249 do_test (3, c
, 1024);
261 #include "../test-skeleton.c"