Code Meaning

Hi Gurus,

Please check the below coding.

IF wa_t_history-db_cr_ind EQ 'H'.

-

> wa_t_history-val_loccur = wa_t_history-val_loccur * - 1.

wa_t_history-val_forcur = wa_t_history-val_forcur * - 1.

wa_t_history-quantity = wa_t_history-quantity * - 1.

ENDIF.

see in the second line i marked by arrow.

wa_t_history-val_loccur = wa_t_history-val_loccur * - 1.

can u please tell me what is the meaning of * - 1.