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44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* This file is part of the stmbl project.
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*
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* Copyright (C) 2013-2015 Rene Hopf <renehopf@mac.com>
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* Copyright (C) 2013-2015 Nico Stute <crinq@crinq.de>
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*
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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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*
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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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*
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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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#include "misc.h"
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float minus(float a, float b){
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if(ABS(a - b) < M_PI){
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return(a - b);
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}
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else if(a > b){
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return(a - b - 2.0 * M_PI);
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}
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else{
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return(a - b + 2.0 * M_PI);
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}
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}
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float mod(float a){
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while(a < -M_PI){
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a += 2.0 * M_PI;
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}
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while(a > M_PI){
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a -= 2.0 * M_PI;
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}
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return(a);
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}
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