86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2024 Scott Duensing, scott@kangaroopunch.com
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
|
|
#ifndef FMATH_H
|
|
#define FMATH_H
|
|
|
|
|
|
#define FAUX_FIXED
|
|
|
|
|
|
#ifdef FAUX_FIXED
|
|
|
|
|
|
#include <math.h>
|
|
|
|
|
|
// Fake fixed point for debugging while porting.
|
|
typedef double fixT;
|
|
|
|
|
|
#define fixAdd(x, y) ((x) + (y))
|
|
#define fixAtan(x) atan(x)
|
|
#define fixCos(x) cos(x)
|
|
#define fixDegs(x) ((x) * 180 / M_PI)
|
|
#define fixDiv(x, y) ((x) / (y))
|
|
#define fixMul(x, y) ((x) * (y))
|
|
#define fixSin(x) sin(x)
|
|
#define fixSub(x, y) ((x) - (y))
|
|
#define fixToF(x) (x)
|
|
#define fixToI(x) ((int)(x))
|
|
#define fToFix(x) (x)
|
|
#define iToFix(x) ((fixT)(x))
|
|
|
|
|
|
#else // FAUX_FIXED
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
|
// Ratios for converting between radians and fixed point angles.
|
|
#define fixToRad 1608 // 2pi/256
|
|
#define radToFix 2670177 // 256/2pi
|
|
|
|
|
|
typedef int32_t fixT;
|
|
|
|
|
|
fixT fixAdd(fixT x, fixT y);
|
|
fixT fixAtan(fixT x);
|
|
fixT fixCos(fixT x);
|
|
//fixT fixDegs(fixT x);
|
|
fixT fixDiv(fixT x, fixT y);
|
|
fixT fixMul(fixT x, fixT y);
|
|
fixT fixSin(fixT x);
|
|
fixT fixSub(fixT x, fixT y);
|
|
double fixToF(fixT x);
|
|
int16_t fixToI(fixT x);
|
|
fixT fToFix(double x);
|
|
fixT iToFix(int16_t x);
|
|
|
|
|
|
#endif // FAUX_FIXED
|
|
|
|
|
|
#endif // FMATH_H
|