Float vs Packed Number

[Former Member]

Dear Experts,

Really really appreciate if you could kindly help and share a glimpse on light on the following question:

May I know why for the same number with decimal, e.g. '35.54', can yield different result if I'm using different type of variable?

Below are the my source code and the result.

DATA:     float type f,

              pn type p decimals 2.

           float = '35.54'.

           pn = '35.54'.

           write: / float.

           write: / pn.

Millions Thanks!

[Sandeep_Panghal]

Yes.

Check F1 help for data types P and F and you can see the difference.

• You use type F fields when you need to cope with very large value ranges and
  rounding errors are not critical

Message was edited by: Rob Burbank

[Former Member]

Hii ,

Since Float will display as  3,55399999999999E+01 as   3.5 * 10 ( power of 1)  which is equivalent answer to the value. Since Float doesn't allow decimals.

If you used Packed Numbers, decimal point is fixed to places it would give you approx value. Here its 2 places so it would give the required .

try to use new keywords such as 'DECFLOAT16' and 'DECFLOAT32' which is a mixture of both decimal float number.

for further reference please try to read CD205 Advance ABAP topics for futher information.

[RaymondGiuseppi]

In computer arithmetic, only integer calculations are accurate, every other operation will round the results. Even a move is rounding the result.

- type p decimals 2. is actually an integer, with a virtual decimal position, no rounding.

- float is not an integer so the default value was converted and rounded.

Regards,

Raymond

[Former Member]

Hi,

1. FLOAT has default decimal places of 16 & PACKED data type has 0. 
2. FLOAT decimal places are fixed whereas can be decided by the ABAPer for PACKED. 

[Former Member]

Hi,

The difference is as:

<< Moderator message - Cut and paste response from http://scn.sap.com/thread/542914 removed and points unassigned. Plagiarism is not allowed in SCN >>

For further information please refer the folowing threads

http://scn.sap.com/thread/1497542

Point begging also removed.

Regards

Resh

Message was edited by: Rob Burbank