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authormillert <>2002-06-29 00:20:11 +0000
committermillert <>2002-06-29 00:20:11 +0000
commit6adefe10f90940abb77fbd207bd42c11497679b9 (patch)
treeb09c3b0aa815c3c77e8a7c20492b1d18817cd32b /src/lib/libc/stdlib/strtoull.c
parente08f871ca434f7bd4986a8b654059f32fda1e02a (diff)
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Replace strtou?q() with the more standard strtou?ll(), using weak
aliases to fake up strtou?q(). espie@ OK.
Diffstat (limited to 'src/lib/libc/stdlib/strtoull.c')
-rw-r--r--src/lib/libc/stdlib/strtoull.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/lib/libc/stdlib/strtoull.c b/src/lib/libc/stdlib/strtoull.c
new file mode 100644
index 0000000000..7b4dd56c01
--- /dev/null
+++ b/src/lib/libc/stdlib/strtoull.c
@@ -0,0 +1,128 @@
1/*-
2 * Copyright (c) 1992 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if defined(LIBC_SCCS) && !defined(lint)
35static const char rcsid[] = "$OpenBSD: strtoull.c,v 1.1 2002/06/29 00:20:11 millert Exp $";
36#endif /* LIBC_SCCS and not lint */
37
38#include <sys/types.h>
39
40#include <ctype.h>
41#include <errno.h>
42#include <limits.h>
43#include <stdlib.h>
44
45/*
46 * Convert a string to an unsigned long long.
47 *
48 * Ignores `locale' stuff. Assumes that the upper and lower case
49 * alphabets and digits are each contiguous.
50 */
51unsigned long long
52strtoull(nptr, endptr, base)
53 const char *nptr;
54 char **endptr;
55 int base;
56{
57 const char *s;
58 unsigned long long acc, cutoff;
59 int c;
60 int neg, any, cutlim;
61
62 /*
63 * See strtoq for comments as to the logic used.
64 */
65 s = nptr;
66 do {
67 c = (unsigned char) *s++;
68 } while (isspace(c));
69 if (c == '-') {
70 neg = 1;
71 c = *s++;
72 } else {
73 neg = 0;
74 if (c == '+')
75 c = *s++;
76 }
77 if ((base == 0 || base == 16) &&
78 c == '0' && (*s == 'x' || *s == 'X')) {
79 c = s[1];
80 s += 2;
81 base = 16;
82 }
83 if (base == 0)
84 base = c == '0' ? 8 : 10;
85
86 cutoff = ULLONG_MAX / (unsigned long long)base;
87 cutlim = ULLONG_MAX % (unsigned long long)base;
88 for (acc = 0, any = 0;; c = (unsigned char) *s++) {
89 if (isdigit(c))
90 c -= '0';
91 else if (isalpha(c))
92 c -= isupper(c) ? 'A' - 10 : 'a' - 10;
93 else
94 break;
95 if (c >= base)
96 break;
97 if (any < 0)
98 continue;
99 if (acc > cutoff || (acc == cutoff && c > cutlim)) {
100 any = -1;
101 acc = ULLONG_MAX;
102 errno = ERANGE;
103 } else {
104 any = 1;
105 acc *= (unsigned long long)base;
106 acc += c;
107 }
108 }
109 if (neg && any > 0)
110 acc = -acc;
111 if (endptr != 0)
112 *endptr = (char *) (any ? s - 1 : nptr);
113 return (acc);
114}
115
116#ifdef __weak_alias
117__weak_alias(strtouq, strtoull);
118#else
119u_quad_t
120strtouq(nptr, endptr, base)
121 const char *nptr;
122 char **endptr;
123 int base;
124{
125
126 return ((u_quad_t)strtoull(nptr, endptr, base);
127}
128#endif