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authorJacek Antonelli2008-08-15 23:44:46 -0500
committerJacek Antonelli2008-08-15 23:44:46 -0500
commit38d6d37f2d982fa959e9e8a4a3f7e1ccfad7b5d4 (patch)
treeadca584755d22ca041a2dbfc35d4eca01f70b32c /linden/indra/llcommon/u64.cpp
parentREADME.txt (diff)
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Second Life viewer sources 1.13.2.12
Diffstat (limited to 'linden/indra/llcommon/u64.cpp')
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1/**
2 * @file u64.cpp
3 * @brief Utilities to deal with U64s.
4 *
5 * Copyright (c) 2001-2007, Linden Research, Inc.
6 *
7 * The source code in this file ("Source Code") is provided by Linden Lab
8 * to you under the terms of the GNU General Public License, version 2.0
9 * ("GPL"), unless you have obtained a separate licensing agreement
10 * ("Other License"), formally executed by you and Linden Lab. Terms of
11 * the GPL can be found in doc/GPL-license.txt in this distribution, or
12 * online at http://secondlife.com/developers/opensource/gplv2
13 *
14 * There are special exceptions to the terms and conditions of the GPL as
15 * it is applied to this Source Code. View the full text of the exception
16 * in the file doc/FLOSS-exception.txt in this software distribution, or
17 * online at http://secondlife.com/developers/opensource/flossexception
18 *
19 * By copying, modifying or distributing this software, you acknowledge
20 * that you have read and understood your obligations described above,
21 * and agree to abide by those obligations.
22 *
23 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
24 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
25 * COMPLETENESS OR PERFORMANCE.
26 */
27
28#include "linden_common.h"
29
30#include "u64.h"
31
32
33U64 str_to_U64(const char *str)
34{
35 U64 result = 0;
36 char *aptr = strpbrk(str,"0123456789");
37
38 if (!aptr)
39 {
40 llwarns << "str_to_U64: Bad string to U64 conversion attempt: format\n" << llendl;
41 }
42 else
43 {
44 while ((*aptr >= '0') && (*aptr <= '9'))
45 {
46 result = result*10 + (*aptr++ - '0');
47 }
48 }
49 return (result);
50}
51
52
53char* U64_to_str(U64 value, char* result, S32 result_size)
54{
55 U32 part1,part2,part3;
56
57 part3 = (U32)(value % (U64)10000000);
58
59 value /= 10000000;
60 part2 = (U32)(value % (U64)10000000);
61
62 value /= 10000000;
63 part1 = (U32)(value % (U64)10000000);
64
65 // three cases to avoid leading zeroes unless necessary
66
67 if (part1)
68 {
69 snprintf(
70 result,
71 result_size,
72 "%u%07u%07u",
73 part1,part2,part3); /* Flawfinder: ignore */
74 }
75 else if (part2)
76 {
77 snprintf(
78 result,
79 result_size,
80 "%u%07u",
81 part2,part3); /* Flawfinder: ignore */
82 }
83 else
84 {
85 snprintf(
86 result,
87 result_size,
88 "%u",
89 part3); /* Flawfinder: ignore */
90 }
91 return (result);
92}
93
94F64 U64_to_F64(const U64 value)
95{
96 S64 top_bits = (S64)(value >> 1);
97 F64 result = (F64)top_bits;
98 result *= 2.f;
99 result += (U32)(value & 0x01);
100 return result;
101}
102
103U64 llstrtou64(const char* str, char** end, S32 base)
104{
105#ifdef LL_WINDOWS
106 return _strtoui64(str,end,base);
107#else
108 return strtoull(str,end,base);
109#endif
110}