source: trunk/test/math/remez.cpp @ 1010

Last change on this file since 1010 was 1010, checked in by sam, 10 years ago

test: allow to perform Remez solving on an arbitrary range.

  • Property svn:keywords set to Id
File size: 1.1 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#include "core.h"
19
20using namespace lol;
21using namespace std;
22
23#include "remez-matrix.h"
24#include "remez-solver.h"
25
26/* The function we want to approximate */
27static real myfun(real const &x)
28{
29    real y = sqrt(x);
30    if (!y)
31        return real::R_PI_2;
32    return sin(real::R_PI_2 * y) / y;
33}
34
35static real myerr(real const &x)
36{
37    return real::R_1;
38}
39
40int main(int argc, char **argv)
41{
42    RemezSolver<4> solver;
43    solver.Run(0, 1, myfun, myfun, 15);
44    //solver.Run(-1, 1, myfun, myfun, 15);
45    //solver.Run(0, real::R_PI * real::R_PI >> 4, myfun, myfun, 15);
46
47    return EXIT_SUCCESS;
48}
49
Note: See TracBrowser for help on using the repository browser.