47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
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/*
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* Copyright (C) 2023 Daniele Lacamera <root@danielinux.net>
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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 Lesser 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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 <math.h>
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#include <stdint.h>
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#ifndef TRIG_H
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#define TRIG_H
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extern const float PreCalcCos[], PreCalcSin[];
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extern const short PreCalcAtan[81][81];
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static inline float psin(int x)
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{
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int a = x + 180;
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if (a >= 360)
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a-=360;
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return (PreCalcSin[a]);
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}
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static inline float pcos(int x)
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{
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int a = x + 180;
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if (a >= 360)
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a-=360;
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return (PreCalcCos[a]);
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}
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static inline int16_t p_atan2(int x, int y)
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{
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return PreCalcAtan[x,y];
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}
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#endif
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