Passing an array into a function

Let x=[0.7840 0.0005 0.0817 0.5732] .When this array is given in a function as p1= Im_opt(p, x(1), x(2), x(3), x(4)), I get the result as -0.0023 but when I pass the array directly into the function as p1=Im_opt(p, 0.7840, 0.0005, 0.5732), I am getting the result as 0.0033. Why I am getting different value for the same array? Please anyone help me with this.

[Stephan]

Im_opt appears to be not a built in function. Can you provide it or a link to its documentation?

[Rajashree Annapillai]

Im_opt is not a built in function and is used to encrypt the image and to find the correlation between the two images sir.

[Stephen23]

See also:

https://www.mathworks.com/matlabcentral/answers/442041-same-function-gives-different-answers-while-checking-in-a-command-window-why

Answer 1

[Jan]

This is most likely the same problem than in your other question: The statement "Let x=[0.7840 0.0005 0.0817 0.5732]" is not true, but this is only the abbreviated display in the command window. See:

doc format

E.g. the 2nd value might not be "0.0005", but "0.000499", which is displayed identically, although the values differ.