Matlab number with e

Question

I work with matlab.My answer is this

1.0e-13 *

-0.4710
0.0133

I tried format long g but this time answer is

-4.70969527418052e-14

I do not want number with e.How can fixed this?

What do you want to display? `-0.0000000000000470969527418052`? — Sardar Usama, May 28 '20 at 10:00
So you want the output to be `-0.000000000000047`? Or do you want it as `-4.70969x10^-14`? — Aziz, May 28 '20 at 10:01
Does that really seem like a good idea? Those decimals are most likely not be precise anyway. — Sardar Usama, May 28 '20 at 10:13

score 2 · Accepted Answer · answered May 28 '20 at 10:14

2

You can use sprintf('%0.55f',your_var) if you want. Change how many decimals you want printed by changing the number. Its 55 in this example.

I think this is a terrible idea. You are plotting raw floating point representation, it confuses you more than it helps. If you need accuracy in decimals of the order of e-20, you may be doing something wrong, or just not using the right tool.

I think before you continue you should have a read to the following post:

Why is 24.0000 not equal to 24.0000 in MATLAB?

answered May 28 '20 at 10:14

Ander Biguri

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I don't need accuracy, I just want to get the long version of number. – Sun May 28 '20 at 10:26
@Sun if you dont care about the decimal values (i.e. you dont need accuracy), then why would you want to print them? I added the disclaimer because of that doubt. – Ander Biguri May 28 '20 at 10:31

score 1 · Answer 2 · answered May 28 '20 at 10:20

1

There is another possibility using the symbolic toolbox:

precision=64
vpa(sym(z,"f"),64)

The output is:

-0.00000000000004709999999999999620518877985217527098343349989395534294089884497

answered May 28 '20 at 10:20

Ash

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Matlab number with e

2 Answers2