## Representation of Numbers

Floating-point numbers may be entered as either integers, decimal floating-point numbers, or using the or using the e notation:

```>> 3

ans =

3

>> 3253235.23

ans =

3.2532e+06

>> 32.2523e-3

ans =

0.0323

```

Note that the input does not necessarily reflect on the way the number is displayed.

If the largest number in a matrix would be written using the e notation, the appropriate multiple of 10 is taken outside of matrix:

```>> [225323.23 523.23]

ans =

1.0e+05 *

2.2542    0.0052

>> [3.2376 9.2534e-7]

ans =

3.2376    0.0000

>> [728, 725324547]

ans =

1.0e+10 *

0.0000     7.2532

```

There are a number of formats in which you can use to display the results. You may invoke any of the formats by typing format **** where **** is the format. Note, that there are no parentheses.

short Scaled fixed point format with 5 digits. default
long Scaled fixed point format with 15 digits. full precision in decimal format
short e Floating point format with 5 digits.
long e Floating point format with 15 digits.
short g Best of fixed or floating point format with 5 digits.
long g Best of fixed or floating point format with 15 digits.
hex Hexadecimal fomrat. the internal represetation of the double precision floating-point numbers.
+ The symbols +, - and blank are printed for positive, negative, and zero elements. Imaginary parts are ignored.
bank Fixed formats for dollars and cents.
rat Approximation by ratio of small integers.

Two other formats are used for line spacing: loose (the default), and compact (suppresses extra line-feeds.)

Examples:

```>> a = 1/5323

a =

1.8786e-04

>> format long
>> a

a =

1.878639864737930e-04

>> format hex
>> a

a =

3f289fab5b22f6b8

>> format                    % same as format short
>> a = 2.3

a =

2.3

>> format long e

a =

2.300000000000000e+00

```