Stop Matlab ignoring numbers

Hello, my code is:

t=1;
h=6.626*10^-34;
e=2.718281828459;
l=1.757*10^-29;
m=1.652*10^-29;
n=0.8*m;
o=2*pi*395581*10^9;
p=2*pi*443941*10^9;
q=2*pi*48360*10^9;
w=1;
M=[0,(0.E-323+sqrt(-1)*0.132584E5),(0.E-323+sqrt(-1)*0.E-323),( ...
    0.E-323+sqrt(-1)*(-0.132584E5)),0,0,(0.E-323+sqrt(-1)*0.E-323),0, ...
    0;(0.E-323+sqrt(-1)*0.132584E5),(sqrt(-1)*(-1)).*((-1).*o+w),( ...
    0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
    0.E-323+sqrt(-1)*0.E-323),0;(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
    sqrt(-1)*0.E-323),(sqrt(-1)*(-1)).*((-1).*p+w),0,0,(0.E-323+sqrt( ...
    -1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+w)),0,0,( ...
    0.E-323+sqrt(-1)*0.E-323);(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
    sqrt(-1)*(-1)).*(o+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5),( ...
    0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0,0;0,( ...
    0.E-323+sqrt(-1)*(-0.132584E5)),0,(0.E-323+sqrt(-1)*0.132584E5),0, ...
    (0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*0.E-323),0;0,0,( ...
    0.E-323+sqrt(-1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*(o+(-1).*p+q+( ...
    -1).*w)),(0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),( ...
    sqrt(-1)*(-1)).*((-1).*q+w),0,0,(0.E-323+sqrt(-1)*0.E-323);( ...
    0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,0,( ...
    sqrt(-1)*(-1)).*(p+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5).*e.^( ...
    sqrt(-1).*t.*(o+(-1).*p+q+(-1).*w)),(0.E-323+sqrt(-1)*0.E-323);0,( ...
    0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,( ...
    0.E-323+sqrt(-1)*0.132584E5).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+ ...
    w)),(sqrt(-1)*(-1)).*(q+(-1).*w),(0.E-323+sqrt(-1)*0.E-323);0,0,( ...
    0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
    sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0]

but my output is:

M =

   1.0e+15 *
Columns 1 through 5

   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 2.4855i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 2.7894i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 - 2.4855i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i  -0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i

  Columns 6 through 9

   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 - 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.3039i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 - 2.7894i   0.0000 + 0.0000i   0.0000 + 0.0000i
   0.0000 + 0.0000i  -0.0000 + 0.0000i   0.0000 - 0.3039i   0.0000 + 0.0000i
   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i   0.0000 + 0.0000i

For example the second entry. It is not equal to 0. But in the output it is.How can I stop that ?

[KSSV]

They are not zeros....See that a number 1.0e+15 is multiplied to every element.

[Stephen23]

"For example the second entry. It is not equal to 0. But in the output it is."

No, it is not equal to zero. Lets have a look at it:

t=1;
h=6.626*10^-34;
e=2.718281828459;
l=1.757*10^-29;
m=1.652*10^-29;
n=0.8*m;
o=2*pi*395581*10^9;
p=2*pi*443941*10^9;
q=2*pi*48360*10^9;
w=1;
M=[0,(0.E-323+sqrt(-1)*0.132584E5),(0.E-323+sqrt(-1)*0.E-323),( ...
    0.E-323+sqrt(-1)*(-0.132584E5)),0,0,(0.E-323+sqrt(-1)*0.E-323),0, ...
    0;(0.E-323+sqrt(-1)*0.132584E5),(sqrt(-1)*(-1)).*((-1).*o+w),( ...
    0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
    0.E-323+sqrt(-1)*0.E-323),0;(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
    sqrt(-1)*0.E-323),(sqrt(-1)*(-1)).*((-1).*p+w),0,0,(0.E-323+sqrt( ...
    -1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+w)),0,0,( ...
    0.E-323+sqrt(-1)*0.E-323);(0.E-323+sqrt(-1)*(-0.132584E5)),0,0,( ...
    sqrt(-1)*(-1)).*(o+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5),( ...
    0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0,0;0,( ...
    0.E-323+sqrt(-1)*(-0.132584E5)),0,(0.E-323+sqrt(-1)*0.132584E5),0, ...
    (0.E-323+sqrt(-1)*0.E-323),0,(0.E-323+sqrt(-1)*0.E-323),0;0,0,( ...
    0.E-323+sqrt(-1)*(-0.132584E5)).*e.^(sqrt(-1).*t.*(o+(-1).*p+q+( ...
    -1).*w)),(0.E-323+sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),( ...
    sqrt(-1)*(-1)).*((-1).*q+w),0,0,(0.E-323+sqrt(-1)*0.E-323);( ...
    0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,0,( ...
    sqrt(-1)*(-1)).*(p+(-1).*w),(0.E-323+sqrt(-1)*0.132584E5).*e.^( ...
    sqrt(-1).*t.*(o+(-1).*p+q+(-1).*w)),(0.E-323+sqrt(-1)*0.E-323);0,( ...
    0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),0,( ...
    0.E-323+sqrt(-1)*0.132584E5).*e.^(sqrt(-1).*t.*((-1).*o+p+(-1).*q+ ...
    w)),(sqrt(-1)*(-1)).*(q+(-1).*w),(0.E-323+sqrt(-1)*0.E-323);0,0,( ...
    0.E-323+sqrt(-1)*0.E-323),0,0,(0.E-323+sqrt(-1)*0.E-323),(0.E-323+ ...
    sqrt(-1)*0.E-323),(0.E-323+sqrt(-1)*0.E-323),0];

It is unclear which element you mean by "second", so lets have at look at both of these:

format long G
M(1,2) % not zero

ans = 
                          0 +               13258.4i

M(2,1) % not zero

ans = 
                          0 +               13258.4i

Most likely you are making the mistake of confusing how data are displayed with what data are stored in memory.

[Alland Kiepert]

So on the display there is just a 0 at certain entries because the exact terms would take too much space ?

[James Tursa]

Yes

Answer 1

[Jan]

format long g

This enables more visible digits. You get the complete control over the output format, if you use fprintf() instead:

for iR = 1:size(M, 1)
   for iC = 1:size(M, 2)
       fprintf('%18.16g+%18.16g, ', real(M(iR, iC)), imag(M(iR, iC)));
   end
   fprintf('\n');
end
% [EDITED, thanks Walter!]

[Walter Roberson]

       fprintf('%18.16g+%18.16g, ', real(M(iR, iC)), imag(M(iR, iC) );