1 /* Test and measure memchr functions.
2 Copyright (C) 1999,2002,2003,2005,2009,2011 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include "test-string.h"
26 typedef char *(*proto_t
) (const char *, int);
27 char *simple_rawmemchr (const char *, int);
29 IMPL (simple_rawmemchr
, 0)
33 simple_rawmemchr (const char *s
, int c
)
37 return (char *) s
- 1;
42 do_one_test (impl_t
*impl
, const char *s
, int c
, char *exp_res
)
44 char *res
= CALL (impl
, s
, c
);
47 error (0, 0, "Wrong result in function %s %p %p", impl
->name
,
55 hp_timing_t start
__attribute ((unused
));
56 hp_timing_t stop
__attribute ((unused
));
57 hp_timing_t best_time
= ~ (hp_timing_t
) 0;
60 for (i
= 0; i
< 32; ++i
)
62 HP_TIMING_NOW (start
);
65 HP_TIMING_BEST (best_time
, start
, stop
);
68 printf ("\t%zd", (size_t) best_time
);
73 do_test (size_t align
, size_t pos
, size_t len
, int seek_char
)
79 if (align
+ len
>= page_size
)
82 for (i
= 0; i
< len
; ++i
)
84 buf1
[align
+ i
] = 1 + 23 * i
% 127;
85 if (buf1
[align
+ i
] == seek_char
)
86 buf1
[align
+ i
] = seek_char
+ 1;
88 buf1
[align
+ len
] = 0;
92 buf1
[align
+ pos
] = seek_char
;
93 buf1
[align
+ len
] = -seek_char
;
94 result
= (char *) (buf1
+ align
+ pos
);
97 printf ("Length %4zd, alignment %2zd:", pos
, align
);
99 FOR_EACH_IMPL (impl
, 0)
100 do_one_test (impl
, (char *) (buf1
+ align
), seek_char
, result
);
107 do_random_tests (void)
109 size_t i
, j
, n
, align
, pos
, len
;
112 unsigned char *p
= buf1
+ page_size
- 512;
114 for (n
= 0; n
< ITERATIONS
; n
++)
116 align
= random () & 15;
117 pos
= random () & 511;
118 if (pos
+ align
>= 512)
119 pos
= 511 - align
- (random () & 7);
120 len
= random () & 511;
121 if (len
+ align
>= 512)
122 len
= 512 - align
- (random () & 7);
125 seek_char
= random () & 255;
126 j
= len
+ align
+ 64;
130 for (i
= 0; i
< j
; i
++)
132 if (i
== pos
+ align
)
136 p
[i
] = random () & 255;
137 if (i
< pos
+ align
&& p
[i
] == seek_char
)
138 p
[i
] = seek_char
+ 13;
143 size_t r
= random ();
145 len
= ~(uintptr_t) (p
+ align
) - ((r
>> 5) & 31);
146 result
= (char *) (p
+ pos
+ align
);
148 FOR_EACH_IMPL (impl
, 1)
149 if (CALL (impl
, (char *) (p
+ align
), seek_char
) != result
)
151 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd, %zd) %p != %p, p %p",
152 n
, impl
->name
, align
, seek_char
, len
, pos
,
153 CALL (impl
, (char *) (p
+ align
), seek_char
),
168 FOR_EACH_IMPL (impl
, 0)
169 printf ("\t%s", impl
->name
);
172 for (i
= 1; i
< 7; ++i
)
174 do_test (0, 16 << i
, 2048, 23);
175 do_test (i
, 64, 256, 23);
176 do_test (0, 16 << i
, 2048, 0);
177 do_test (i
, 64, 256, 0);
179 for (i
= 1; i
< 32; ++i
)
181 do_test (0, i
, i
+ 1, 23);
182 do_test (0, i
, i
+ 1, 0);
189 #include "../test-skeleton.c"