Aquileo | Recent changes to bugs

Aquileo | #614 overloading a builtin function

Sat, 20 May 2023 15:17:35 -0000

I'm using 4.2 on Windows.

Aquileo | overloading a builtin function

Sat, 20 May 2023 15:16:17 -0000

After overloading a builtin function, when I call 'builtin' function, it calls my overloaded function instead of the builtin version...
For example:
in current folder, in file 'sin.m' I define:

function y = sin (x)
    y = 100; 
end

Then on command line:
~~~
--> sin(0)
ans =
100
--> builtin('sin',0)
ans =
100
~~~

Is there a way to fix this or a workaround I could use?
thanks

Aquileo | crash on version 4.2

Wed, 01 May 2019 21:57:55 -0000

It looks like Freemat 4.2 crashes in some cases of stack overflow. Here is an easy-to-reproduce example (observed with 4.2 on MacOSX 10.14.4), with a recursive implementation of the Fibonacci sequence.

function u = fibrec(n)
    % computes the n-th term of the (0,1)-Fibonacci sequence; recursive version

    a = 0;
    b = 1;

    if (n == 0)
        u = a;
    elseif (n == 1);
        u = b;
    else
        u = fibrec(n - 2) + fibrec(n - 1);
    end;
end

--> fibrec(5)
ans =
 5
--> fibrec(100)

<crash></crash>

Aquileo | Build fails in clang-6

Thu, 26 Apr 2018 05:15:06 -0000

I'm getting these warnings and erros on FreeBSD 12:

/wrkdirs/usr/ports/math/freemat/work/FreeMat-4.2-Source/libs/libMatC/CArray.cpp:125:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
/wrkdirs/usr/ports/math/freemat/work/FreeMat-4.2-Source/libs/libMatC/CArray.cpp:208:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
/wrkdirs/usr/ports/math/freemat/work/FreeMat-4.2-Source/libs/libMatC/CArray.cpp:234:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
/wrkdirs/usr/ports/math/freemat/work/FreeMat-4.2-Source/libs/libMatC/CArray.cpp:537:21: error: cannot initialize return object of type 'double' with an rvalue of type 'nullptr_t'
  if (*flag) return NULL;
                    ^~~~
/usr/include/sys/_null.h:37:14: note: expanded from macro 'NULL'
#define NULL    nullptr
                ^~~~~~~
/wrkdirs/usr/ports/math/freemat/work/FreeMat-4.2-Source/libs/libMatC/CArray.cpp:572:21: error: cannot initialize return object of type 'double' with an rvalue of type 'nullptr_t'
  if (*flag) return NULL;
                    ^~~~
/usr/include/sys/_null.h:37:14: note: expanded from macro 'NULL'
#define NULL    nullptr
                ^~~~~~~
3 warnings and 2 errors generated.

Aquileo | #489 Freemat GUI fails if it sees a file named "Private"

Wed, 07 Jun 2017 20:12:22 -0000

Below is a patch fixing the issue. We want to scanDirectory() if fileBaseName matches 'private' case-insensitively.

--- a/libs/libFreeMat/Interpreter.cpp
+++ b/libs/libFreeMat/Interpreter.cpp
@@ -364,7 +364,7 @@
procFileP(prefix + ":" + fileBaseName,fileAbsoluteFilePath,tempfunc);
else if (fileBaseName[0] == '@')
scanDirectory(fileAbsoluteFilePath,tempfunc,fileBaseName);
- else if (fileBaseName == "private")
+ else if (fileBaseName.toUpper() == "PRIVATE")
scanDirectory(fileAbsoluteFilePath,tempfunc,fileAbsoluteFilePath);
else
procFileMex(fileBaseName,fileAbsoluteFilePath,tempfunc);

Aquileo | #563 Help->About doesn't give version

Wed, 07 Jun 2017 20:08:36 -0000

Below is a patch fixing the issue. FREEMAT_VERSION is already quoted.

--- a/src/application.cpp
+++ b/src/application.cpp
@@ -429,7 +429,7 @@
void ApplicationWindow::about() {
QString text;
text += "FreeMat Version ";
- text += QUOTEME(FREEMAT_VERSION);
+ text += FREEMAT_VERSION;
text += "\n\n";
text += "Licensed under the GNU Public License Ver 2\n";
text += "Web: http://freemat.sf.net\n";

Aquileo | #604 Sign of polynomial return for polyder

Sun, 28 May 2017 23:14:23 -0000

Hi,

back in 2007 I contributed a polyder function (and other functions) to FREEMAT. I see now that it has been replaced by a different, possibly more complete, function that, unfortunately is yielding a wrong result.

I am posting here again my original contribution in the hope that it will help someone in the future. If the FREEMAT development team wishes, they can use it to correct their own version:

% POLYDER POLYDER Polynomial Differentiation
% 
% Usage
% 
% The polyder function returns the polynomial coefficients resulting
% from differentiation of polynomial p. The syntax for its use is either
% 
%    pder = polyder(p)
% 
% for the derivitave of polynomial p, or
% 
%    convp1p2der = polyder(p1,p2)
% 
% for the derivitave of polynomial conv(p1,p2), or still
% 
%    [nder,dder] = polyder(n,d)
% 
% for the derivative of polynomial n/d (nder/dder). In all cases the
% polynomial coefficients are assumed to be in decreasing degree.
% 
% This is a small contribution to FreeMat
% made by Paulo Xavier Candeias under GPL
% (2007-06-14)
% 
function [pder1,pder2] = polyder(p1,p2)
   if nargin < 1 || nargout > nargin
      error('wrong use (see help polyder)');
   elseif nargin < 2
      p2 = 1;
   end
   zp1 = [0,p1(:).'];
   zp2 = [0,p2(:).'];
   pd1p2 = conv(zp1(1:end-1).*(length(zp1)-1:-1:1),zp2);
   p1pd2 = conv(zp1,zp2(1:end-1).*(length(zp2)-1:-1:1));
   if nargout < 2
      pder1 = pd1p2+p1pd2;
      pder2 = 0;
   else
      pder1 = pd1p2-p1pd2;
      pder2 = conv(zp2,zp2);
   end
   pder1 = pder1(min(find(pder1,1),length(pder1)):end);
   pder2 = pder2(min(find(pder2,1),length(pder2)):end);

Happy coding,
Paulo

Aquileo | bug in dec2bin

Wed, 31 Aug 2016 20:14:13 -0000

Bug, with 2^(*)
--> dec2bin(2^35)

ans =
00000000000000000000000000000000000
,but
--> dec2bin(2^35,36)

ans =
100000000000000000000000000000000000

Aquileo | Freemat 5?

Wed, 25 May 2016 04:48:52 -0000

I noticed that Samit has recently submitted several items that were from a folder/directory named "Freemat5". Does that mean there's a new version on the horizon?

Aquileo | problem with function wavwrite()

Thu, 10 Dec 2015 13:27:44 -0000

To convert a.csv file to a.wav file I was tried to use wavwrite() function.but it doesn't work.
every time it says
wavwrite(x1,'L:\TRC01.wav');
In L:/FreeMatPortable/App/FreeMat/toolbox/io/wavwrite.m(wavwrite) at line 64
In docli(builtin) at line 1
In base(base)
In base()
In global()
Error: Illegal request for real part of scalar - this is bug