File: fft.dia.ref

package info (click to toggle)
scilab 6.0.1-10%2Bdeb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 365,292 kB
  • sloc: xml: 827,376; cpp: 273,125; ansic: 216,672; java: 190,706; fortran: 90,783; ml: 24,107; tcl: 16,853; sh: 13,608; makefile: 9,556; lex: 1,615; perl: 1,566; yacc: 1,263; php: 690; cs: 614
file content (25 lines) | stat: -rw-r--r-- 1,015 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
//<-- CLI SHELL MODE -->
// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 2008 - Digiteo - unknown author
// Copyright (C) 2009 - Digiteo - Vincent LIARD
//
// Copyright (C) 2012 - 2016 - Scilab Enterprises
//
// This file is hereby licensed under the terms of the GNU GPL v2.0,
// pursuant to article 5.3.4 of the CeCILL v.2.1.
// This file was originally licensed under the terms of the CeCILL v2.1,
// and continues to be available under such terms.
// For more information, see the COPYING file which you should have received
// along with this program.
a = [1;2;3];
n=size(a,'*');
r1 = norm(1/n*exp(2*%i*%pi*(0:n-1)'.*.(0:n-1)/n)*a -fft([1;2;3],1));
if r1 > 10 *%eps then bugmes();quit;end
r2 = norm(exp(-2*%i*%pi*(0:n-1)'.*.(0:n-1)/n)*a -fft(a,-1));
if r2 > 100 *%eps then bugmes();quit;end
sample_rate = 1000;
t = 0:1/sample_rate:0.6;
N = size(t,'*');
s = sin(2*%pi*50*t)+sin(2*%pi*70*t+%pi/4)+grand(1,N,'nor',0,1);
y = fft(s);
if size(y) <> [1 601] then bugmes();quit;end