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41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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bsearch.cpp
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Binary search.
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*******************************************************************************/
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#include <stdint.h>
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#include <stdlib.h>
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extern "C" void* bsearch(const void* key, const void* base, size_t nmemb,
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size_t size, int (*compare)(const void*, const void*))
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{
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const uint8_t* baseptr = (const uint8_t*) base;
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// TODO: Just a quick and surprisingly correct yet slow implementation.
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for ( size_t i = 0; i < nmemb; i++ )
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{
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const void* candidate = baseptr + i * size;
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if ( !compare(key, candidate) )
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return (void*) candidate;
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}
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return NULL;
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}
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