0,0 → 1,46 |
/* |
* Routines for computation of basic transcendental functions sin and cos. |
* These routines use only integers, hence they do not require an FPU nor any |
* kind of FPU emulation. Works reasonably fast even on an 8086 CPU. |
* |
* The results are computed using polynomial approximations. Their precision |
* is not expected to be ideal, but "good enough" for common usage. |
* |
* This file is part of the Mateusz' DOS Routines (MDR): http://mdr.osdn.io |
* Published under the terms of the MIT License, as stated below. |
* |
* Copyright (C) 2022 Mateusz Viste |
* |
* 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 MDR_TRIGINT_H |
#define MDR_TRIGINT_H |
|
/* Computes the cosine value for the given radian. |
* The radian argument must be provided multiplied by 1000. |
* Returns the cosine value multiplied by 1000. */ |
short trigint_cos(short rad1000); |
|
/* Computes the sine value for the given radian angle. |
* The radian argument must be provided multiplied by 1000. |
* Returns the cosine value multiplied by 1000. */ |
short trigint_sin(short rad1000); |
|
#endif |