Need help regarding Arithmetic Expressions

[Former Member]

Hi Experts,

I have a requirement where in I need to pass Arithmetic Expressions (+,-,/) as constants to a subroutine.For ex:

constants:c_p type char1 value '+',

c_m type char1 value '-',

data:v_a type char1 value '2',

v_b type char1 value '6',

v_r type string.

v_r = v_ a + v_b.

In the above instead of + I want use c_p.Please help me out is there any other way in defining Arithmetic expresiions where I could use constants or variables instead of directly using these expressions(+,-).Thanks in advance.

With Regards,

Srini..

[SuhaSaha]

Hello Srini,

I think you must have a look at the FMs belonging to FuGr. CALC.

For e.g., EVAL_FORMULA which evaluates Literal or Variable formulas

CONSTANTS:
C_P TYPE CHAR1 VALUE '+',
C_M TYPE CHAR1 VALUE '-'.

DATA:
V_A TYPE CHAR1 VALUE '2',
V_B TYPE CHAR1 VALUE '6',
V_FORMULA TYPE STRING,
V_RES_F   TYPE F,
V_RES_P   TYPE P.

CONCATENATE V_A C_P V_B INTO V_FORMULA SEPARATED BY SPACE.

CALL FUNCTION 'EVAL_FORMULA'
  EXPORTING
    FORMULA                 = V_FORMULA
  IMPORTING
    VALUE                   = V_RES_F
  EXCEPTIONS
    DIVISION_BY_ZERO        = 1
    EXP_ERROR               = 2
    FORMULA_TABLE_NOT_VALID = 3
    INVALID_EXPRESSION      = 4
    INVALID_VALUE           = 5
    LOG_ERROR               = 6
    PARAMETER_ERROR         = 7
    SQRT_ERROR              = 8
    UNITS_NOT_VALID         = 9
    MISSING_PARAMETER       = 10
    OTHERS                  = 11.

IF SY-SUBRC = 0.
  MOVE V_RES_F TO V_RES_P.

  WRITE: V_RES_P .
ENDIF.

BR,

Suhas

[Former Member]

Hey Suhas,

The FM u said will work fine but I am thinking for a solution where we can pass keywords or arthematic expressions dynamically.Anyways thanks a lot for your help you all deserve good score.I will update you all if I find any kind of solution.

Note:No macros.

Thanks and Regards,

Srini..

[Former Member]

Hi Srini

You may write

ADD v_a v_b TO v_r.

Pushpraj

[Former Member]

>

> > ADD v_a v_b TO v_r.

I can not use this Statement in SAP. Are you using any RFC which incorporates C language syntax with ABAP?

Cheers

[Former Member]

HI Pushparaj,

ADD v_a v_b TO v_r is showing an error.Any other ways can I achieve this???

Thankis and Regards,

Srini...

[Former Member]

Hi

You could do

CLEAR v_r.
ADD v_a TO v_r.
ADD v_b TO v_r.

Pushpraj

[Former Member]

I can not use this Statement in SAP. Are you using any RFC which incorporates C language syntax with ABAP?

Ya my bad!

[Former Member]

How about this?

data: num1 type i,
      num2 type i,
      num3 type i.

num1 = '7'.

num2 = '8'.

add num1 then num2 until num3 giving num3.


write: num3.

Vikranth

[SuhaSaha]

Hello ,

I think you can check the FM: EVAL_FORMULA?

What's the problem using that FM?

Suhas

[Former Member]

Are you trying to open and close folders in a basic list?