/*
 *      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