112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/**
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* @file u64.cpp
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* @brief Utilities to deal with U64s.
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "u64.h"
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U64 str_to_U64(const std::string& str)
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{
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U64 result = 0;
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const char *aptr = strpbrk(str.c_str(),"0123456789");
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if (!aptr)
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{
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LL_WARNS() << "str_to_U64: Bad string to U64 conversion attempt: format\n" << LL_ENDL;
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}
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else
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{
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while ((*aptr >= '0') && (*aptr <= '9'))
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{
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result = result*10 + (*aptr++ - '0');
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}
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}
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return (result);
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}
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std::string U64_to_str(U64 value)
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{
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std::string res;
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U32 part1,part2,part3;
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part3 = (U32)(value % (U64)10000000);
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value /= 10000000;
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part2 = (U32)(value % (U64)10000000);
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value /= 10000000;
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part1 = (U32)(value % (U64)10000000);
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// three cases to avoid leading zeroes unless necessary
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if (part1)
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{
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res = llformat("%u%07u%07u",part1,part2,part3);
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}
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else if (part2)
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{
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res = llformat("%u%07u",part2,part3);
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}
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else
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{
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res = llformat("%u",part3);
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}
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return res;
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}
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char* U64_to_str(U64 value, char* result, S32 result_size)
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{
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std::string res = U64_to_str(value);
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LLStringUtil::copy(result, res.c_str(), result_size);
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return result;
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}
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F64 U64_to_F64(const U64 value)
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{
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S64 top_bits = (S64)(value >> 1);
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F64 result = (F64)top_bits;
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result *= 2.f;
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result += (U32)(value & 0x01);
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return result;
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}
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U64 llstrtou64(const char* str, char** end, S32 base)
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{
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#ifdef LL_WINDOWS
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return _strtoui64(str,end,base);
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#else
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return strtoull(str,end,base);
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#endif
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}
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