%DECH Built-In Functions in rpgle

It is used to Round-off decimal places.

%DECH is the same as %DEC built-in function except that the half adjust is also performed if the expression is a decimal or float value. Half-adjust is a rounding process in which less significant digits are dropped off to get the rounded result. If the less significant one-half or more of the number base then one is added to the next more significant digit. See example below understand this process.




 Columns . . . :    6  80                                              AMIT/QRPGSRC
 SEU==>                                                                     TESTRPG
 FMT *   *. 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5 ...+... 6 ...+... 7 ...+... 8
        *************** Beginning of data *****************************************
0001.00 DChar001          S             15A                                        
0002.00 DDec001           S             10S 2                                      
0003.00 C                                                                          
0004.00 C                   Eval      Char001 = '-2017.4812'                       
0005.00 C                                                                          
0006.00 C* Convert CHAR to decimal(7,2)                                            
0007.00 C                   Eval      Dec001=  %DECH(Char001:10:2)                 
0008.00 C                                                                          
0009.00 C* Convert to CHAR and display                                             
0010.00 C                   Eval      Char001=  %CHAR(Dec001)                      
0011.00 C     Char001       DSPLY                                                  
0012.00 C                                                                          
0013.00 C                   SETON                                        LR        
        ****************** End of data ********************************************


Output

DSPLY  -2017.48 


In above example, if Char001 = '-2017.4852', then we will get below result:

DSPLY  -2017.49 


In above example, if Char001 = '-2017.4850', then we will get below result:

DSPLY  -2017.49 












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