75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
/**
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* @file u64.h
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* @brief Utilities to deal with U64s.
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_U64_H
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#define LL_U64_H
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/**
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* @brief Forgivingly parse a null terminated character array.
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*
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* @param str The string to parse.
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* @return Returns the first U64 value found in the string or 0 on failure.
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*/
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LL_COMMON_API U64 str_to_U64(const std::string& str);
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/**
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* @brief Given a U64 value, return a printable representation.
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* @param value The U64 to turn into a printable character array.
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* @return Returns the result string.
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*/
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LL_COMMON_API std::string U64_to_str(U64 value);
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/**
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* @brief Given a U64 value, return a printable representation.
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*
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* The client of this function is expected to provide an allocated
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* buffer. The function then snprintf() into that buffer, so providing
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* NULL has undefined behavior. Providing a buffer which is too small
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* will truncate the printable value, so usually you want to declare
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* the buffer:
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*
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* char result[U64_BUF];
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* std::cout << "value: " << U64_to_str(value, result, U64_BUF);
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*
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* @param value The U64 to turn into a printable character array.
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* @param result The buffer to use
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* @param result_size The size of the buffer allocated. Use U64_BUF.
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* @return Returns the result pointer.
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*/
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LL_COMMON_API char* U64_to_str(U64 value, char* result, S32 result_size);
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/**
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* @brief Convert a U64 to the closest F64 value.
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*/
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LL_COMMON_API F64 U64_to_F64(const U64 value);
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/**
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* @brief Helper function to wrap strtoull() which is not available on windows.
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*/
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LL_COMMON_API U64 llstrtou64(const char* str, char** end, S32 base);
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#endif
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