diff options
Diffstat (limited to 'src/lib/libc/stdlib/strtoul.c')
-rw-r--r-- | src/lib/libc/stdlib/strtoul.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/src/lib/libc/stdlib/strtoul.c b/src/lib/libc/stdlib/strtoul.c deleted file mode 100644 index 6667bea8fa..0000000000 --- a/src/lib/libc/stdlib/strtoul.c +++ /dev/null | |||
@@ -1,110 +0,0 @@ | |||
1 | /* $OpenBSD: strtoul.c,v 1.11 2017/07/06 16:23:11 millert Exp $ */ | ||
2 | /* | ||
3 | * Copyright (c) 1990 The Regents of the University of California. | ||
4 | * All rights reserved. | ||
5 | * | ||
6 | * Redistribution and use in source and binary forms, with or without | ||
7 | * modification, are permitted provided that the following conditions | ||
8 | * are met: | ||
9 | * 1. Redistributions of source code must retain the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer. | ||
11 | * 2. Redistributions in binary form must reproduce the above copyright | ||
12 | * notice, this list of conditions and the following disclaimer in the | ||
13 | * documentation and/or other materials provided with the distribution. | ||
14 | * 3. Neither the name of the University nor the names of its contributors | ||
15 | * may be used to endorse or promote products derived from this software | ||
16 | * without specific prior written permission. | ||
17 | * | ||
18 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
28 | * SUCH DAMAGE. | ||
29 | */ | ||
30 | |||
31 | #include <ctype.h> | ||
32 | #include <errno.h> | ||
33 | #include <limits.h> | ||
34 | #include <stdlib.h> | ||
35 | |||
36 | /* | ||
37 | * Convert a string to an unsigned long integer. | ||
38 | * | ||
39 | * Ignores `locale' stuff. Assumes that the upper and lower case | ||
40 | * alphabets and digits are each contiguous. | ||
41 | */ | ||
42 | unsigned long | ||
43 | strtoul(const char *nptr, char **endptr, int base) | ||
44 | { | ||
45 | const char *s; | ||
46 | unsigned long acc, cutoff; | ||
47 | int c; | ||
48 | int neg, any, cutlim; | ||
49 | |||
50 | /* | ||
51 | * See strtol for comments as to the logic used. | ||
52 | */ | ||
53 | if (base < 0 || base == 1 || base > 36) { | ||
54 | if (endptr != 0) | ||
55 | *endptr = (char *)nptr; | ||
56 | errno = EINVAL; | ||
57 | return 0; | ||
58 | } | ||
59 | |||
60 | s = nptr; | ||
61 | do { | ||
62 | c = (unsigned char) *s++; | ||
63 | } while (isspace(c)); | ||
64 | if (c == '-') { | ||
65 | neg = 1; | ||
66 | c = *s++; | ||
67 | } else { | ||
68 | neg = 0; | ||
69 | if (c == '+') | ||
70 | c = *s++; | ||
71 | } | ||
72 | if ((base == 0 || base == 16) && c == '0' && | ||
73 | (*s == 'x' || *s == 'X') && isxdigit((unsigned char)s[1])) { | ||
74 | c = s[1]; | ||
75 | s += 2; | ||
76 | base = 16; | ||
77 | } | ||
78 | if (base == 0) | ||
79 | base = c == '0' ? 8 : 10; | ||
80 | |||
81 | cutoff = ULONG_MAX / (unsigned long)base; | ||
82 | cutlim = ULONG_MAX % (unsigned long)base; | ||
83 | for (acc = 0, any = 0;; c = (unsigned char) *s++) { | ||
84 | if (isdigit(c)) | ||
85 | c -= '0'; | ||
86 | else if (isalpha(c)) | ||
87 | c -= isupper(c) ? 'A' - 10 : 'a' - 10; | ||
88 | else | ||
89 | break; | ||
90 | if (c >= base) | ||
91 | break; | ||
92 | if (any < 0) | ||
93 | continue; | ||
94 | if (acc > cutoff || (acc == cutoff && c > cutlim)) { | ||
95 | any = -1; | ||
96 | acc = ULONG_MAX; | ||
97 | errno = ERANGE; | ||
98 | } else { | ||
99 | any = 1; | ||
100 | acc *= (unsigned long)base; | ||
101 | acc += c; | ||
102 | } | ||
103 | } | ||
104 | if (neg && any > 0) | ||
105 | acc = -acc; | ||
106 | if (endptr != 0) | ||
107 | *endptr = (char *) (any ? s - 1 : nptr); | ||
108 | return (acc); | ||
109 | } | ||
110 | DEF_STRONG(strtoul); | ||