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0ad/source/maths/Sqrt.h

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/* Copyright (C) 2010 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_MATH_SQRT
#define INCLUDED_MATH_SQRT
/**
* 64-bit integer square root.
* Returns r such that r^2 <= n < (r+1)^2, for the complete u64 range.
*/
u32 isqrt64(u64 n);
#endif // INCLUDED_MATH_SQRT