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/**
* @file u64.cpp
* @brief Utilities to deal with U64s.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "u64.h"
U64 str_to_U64(const std::string& str)
{
U64 result = 0;
const char *aptr = strpbrk(str.c_str(),"0123456789");
if (!aptr)
{
llwarns << "str_to_U64: Bad string to U64 conversion attempt: format\n" << llendl;
}
else
{
while ((*aptr >= '0') && (*aptr <= '9'))
{
result = result*10 + (*aptr++ - '0');
}
}
return (result);
}
std::string U64_to_str(U64 value)
{
std::string res;
U32 part1,part2,part3;
part3 = (U32)(value % (U64)10000000);
value /= 10000000;
part2 = (U32)(value % (U64)10000000);
value /= 10000000;
part1 = (U32)(value % (U64)10000000);
// three cases to avoid leading zeroes unless necessary
if (part1)
{
res = llformat("%u%07u%07u",part1,part2,part3);
}
else if (part2)
{
res = llformat("%u%07u",part2,part3);
}
else
{
res = llformat("%u",part3);
}
return res;
}
char* U64_to_str(U64 value, char* result, S32 result_size)
{
std::string res = U64_to_str(value);
LLStringUtil::copy(result, res.c_str(), result_size);
return result;
}
F64 U64_to_F64(const U64 value)
{
S64 top_bits = (S64)(value >> 1);
F64 result = (F64)top_bits;
result *= 2.f;
result += (U32)(value & 0x01);
return result;
}
U64 llstrtou64(const char* str, char** end, S32 base)
{
#ifdef LL_WINDOWS
return _strtoui64(str,end,base);
#else
return strtoull(str,end,base);
#endif
}
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