source: trunk/test/math/remez.cpp @ 1050

Last change on this file since 1050 was 1050, checked in by sam, 10 years ago

test: fix OS X compilation; we still need SDLmain.a on that platform.

  • Property svn:keywords set to Id
File size: 1.0 KB
Line 
1//
2// Lol Engine - Sample math program: Chebyshev polynomials
3//
4// Copyright: (c) 2005-2011 Sam Hocevar <sam@hocevar.net>
5//   This program is free software; you can redistribute it and/or
6//   modify it under the terms of the Do What The Fuck You Want To
7//   Public License, Version 2, as published by Sam Hocevar. See
8//   http://sam.zoy.org/projects/COPYING.WTFPL for more details.
9//
10
11#if defined HAVE_CONFIG_H
12#   include "config.h"
13#endif
14
15#include <cstring>
16#include <cstdio>
17
18#if USE_SDL && defined __APPLE__
19#   include <SDL_main.h>
20#endif
21
22#include "core.h"
23
24using namespace lol;
25using namespace std;
26
27#include "remez-matrix.h"
28#include "remez-solver.h"
29
30/* The function we want to approximate */
31real myfun(real const &y)
32{
33    real x = sqrt(y);
34    return (sin(x) - x) / (x * y);
35}
36
37real myerr(real const &y)
38{
39    real x = sqrt(y);
40    return sin(x) / (x * y);
41}
42
43int main(int argc, char **argv)
44{
45    RemezSolver<6> solver;
46    solver.Run(real::R_1 >> 400, real::R_PI_2 * real::R_PI_2, myfun, myerr, 40);
47
48    return EXIT_SUCCESS;
49}
50
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