/indra/llcommon/u64.cpp
C++ | 105 lines | 64 code | 15 blank | 26 comment | 6 complexity | 9a0a2884206b0eb3776c70679d6c6777 MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @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
- }