65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/*
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epple2
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Copyright (C) 2008 by Christopher A. Mosher <cmosher01@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UTIL_H
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#define UTIL_H
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class Util
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{
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public:
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static int divideRoundUp(const int num, const int denom)
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{
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return (num+denom-1)/denom;
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}
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static int divideRound(const int dividend, const int divisor)
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{
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return (dividend+divisor/2)/divisor;
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}
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template<typename T> static T mod(T x, const T m)
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{
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x %= m;
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if (x < 0)
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{
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x += m;
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}
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return x;
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}
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template<typename T> static void constrain(const T& min, T& x, const T& lim)
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{
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if (x < min)
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{
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x = min;
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}
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else if (lim <= x)
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{
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x = lim-1;
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}
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}
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// 0x0 <= nib <= 0xF
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// '0' <= ret <= 'F'
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static char hexDigit(unsigned char nib)
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{
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return nib < 10 ? '0'+nib : 'A'+nib-10;
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}
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};
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#endif
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