topic Re: Pseudorandom number in Application Development and Automation Discussions

Pseudorandom number

Former Member — Thu, 03 Nov 2011 11:08:52 GMT

Hi, all... Im generating pseudorandom number by my own functional module with this code. Problem is, that it always returns same number. when i test class CL_ABAP_RANDOM* (all these classes), it returns good numbers. Please, do you see some problems in my code? thanks a lot

FUNCTION y0bi_cm_sample_psrnd_num_get.
*"----------------------------------------------------------------------
*"*"Lokální rozhraní:
*"  IMPORTING
*"     REFERENCE(X_XTIMESTAMP) TYPE  KENNZX OPTIONAL
*"  EXPORTING
*"     REFERENCE(Y_RANDOM_FLOAT) TYPE  CL_ABAP_RANDOM_PACKED=>P31_0
*"----------------------------------------------------------------------
  DATA: lr_random TYPE REF TO cl_abap_random_packed_dec14,
        l_timestamp TYPE timestamp,
        l_seed TYPE i.
  GET TIME STAMP FIELD l_timestamp.
  FREE: lr_random.
  IF x_xtimestamp EQ 'X'.

    l_seed = FRAC( l_timestamp ) * 1000000.
*TRY.
    lr_random = cl_abap_random_packed_dec14=>create(
                                                      seed   = l_seed
                                                      min    = '0'
                                                      max    = '1' ).

    .
* CATCH cx_abap_random .
*ENDTRY.

  ELSE.

    lr_random = cl_abap_random_packed_dec14=>create(
    min    = '0'
    max    = '1' ).
  ENDIF.

  y_random_float = lr_random->get_next( ).

ENDFUNCTION.

Re: Pseudorandom number

Former Member — Thu, 03 Nov 2011 11:31:08 GMT

Dear Filip Kouba

Use this on your data declaration: tzntstmpl

instead of this:

timestamp

So your code will become like this:

l_timestamp TYPE tzntstmpl,

Kind Regards

/Ricardo Quintas

Re: Pseudorandom number

rahul_mahajan — Thu, 03 Nov 2011 12:06:12 GMT

Hi ,

Please see the coding in "RFTBB_MDG_CLASS" and you will get some idea.

I hope this will help you.

Regards,

Rahul Mahajan

Re: Pseudorandom number

Former Member — Thu, 03 Nov 2011 13:20:32 GMT

thanx..the main problem was, that i used wrong data type with no decimals but same length )