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98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
/*============================================================================*/
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/*
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VFLib: https://github.com/vinniefalco/VFLib
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Copyright (C) 2008 by Vinnie Falco <vinnie.falco@gmail.com>
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This library contains portions of other open source products covered by
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separate licenses. Please see the corresponding source files for specific
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terms.
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VFLib is provided under the terms of The MIT License (MIT):
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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/*============================================================================*/
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#ifndef BEAST_MATH_BEASTHEADER
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#define BEAST_MATH_BEASTHEADER
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//
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// Miscellaneous mathematical calculations
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//
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// Calculate the bin for a value given the bin size.
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// This correctly handles negative numbers. For example
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// if value == -1 then calc_bin returns -1.
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template <typename Ty>
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inline Ty calc_bin (Ty value, int size)
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{
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if (value >= 0)
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return value / size;
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else
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return (value - size + 1) / size;
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}
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// Given a number and a bin size, this returns the first
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// corresponding value of the bin associated with the given number.
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// It correctly handles negative numbers. For example,
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// if value == -1 then calc_bin always returns -size
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template <typename Ty>
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inline Ty calc_bin_start (Ty value, int size)
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{
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return calc_bin (value, size) * size;
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}
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template <class T>
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inline T pi () noexcept
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{
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return 3.14159265358979;
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}
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template <class T>
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inline T twoPi () noexcept
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{
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return 6.28318530717958;
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}
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template <class T>
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inline T oneOverTwoPi () noexcept
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{
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return 0.1591549430918955;
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}
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template <class T, class U>
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inline T degreesToRadians (U degrees)
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{
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return T (degrees * 0.0174532925199433);
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}
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template <class T, class U>
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inline T radiansToDegrees (U radians)
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{
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T deg = T (radians * U (57.29577951308238));
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if (deg < 0)
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deg += 360;
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return deg;
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}
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#endif
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