Cognos Analytics Dynamic Relative Date Time Calculations

WEEK TO DATE (WTD) calculation:

CASE
  WHEN 
    	( <INSERT DATE QUERY ITEM> BETWEEN _add_days( <date_prompt>, _day_of_week(<date_prompt>,1) +1 ) and <date_prompt> ) 
	AND 
	( <INSERT DATE QUERY ITEM> = EXTRACT(MONTH ,<date_prompt>) )
  THEN <INSERT MEASURE QUERY ITEM>
  ELSE 0 
END

***********************************************************************************************************************

MONTH TO DATE (MTD) calculation: 

IF ( <INSERT DATE QUERY ITEM> BETWEEN _first_of_month (<date_prompt>) AND <date_prompt> )
THEN (<INSERT MEASURE QUERY ITEM>)
ELSE (  0  )


***********************************************************************************************************************


QUARTER TO DATE (QTD) calculation: 

IF 	(
	<INSERT DATE QUERY ITEM> BETWEEN _make_timestamp(extract( year,<date_prompt>),1 ,1 ) AND _make_timestamp(extract( year,<date_prompt>),3 ,31 ) 
	AND <INSERT DATE QUERY ITEM> <= <date_prompt> AND  extract ( month ,<date_prompt> ) BETWEEN 0 and 3  
	)
THEN  (<INSERT MEASURE QUERY ITEM>)
ELSE IF (   
	<INSERT DATE QUERY ITEM> BETWEEN _make_timestamp(extract( year,  <date_prompt>  ),4 ,1 ) AND _make_timestamp(extract( year,  <date_prompt>),6 ,30 ) 
	AND <INSERT DATE QUERY ITEM> <= <date_prompt>  AND  extract ( month ,   <date_prompt>  ) BETWEEN 4 and 6  
	)
THEN (<INSERT MEASURE QUERY ITEM>)
ELSE IF (
	<INSERT DATE QUERY ITEM> BETWEEN _make_timestamp(extract( year,  <date_prompt>  ),7 ,1 ) AND _make_timestamp(extract( year,  <date_prompt>),9 ,30 ) 
	AND <INSERT DATE QUERY ITEM> <= <date_prompt> AND  extract ( month ,   <date_prompt>  ) BETWEEN 7 and 9 
	)
THEN  (<INSERT MEASURE QUERY ITEM>)
ELSE IF ( 
	<INSERT DATE QUERY ITEM> BETWEEN _make_timestamp(extract( year,  <date_prompt>  ),10 ,1 ) AND _make_timestamp(extract( year,  <date_prompt>), 12 ,31 ) 
	AND <INSERT DATE QUERY ITEM> <= <date_prompt> AND  extract ( month ,   <date_prompt>  ) BETWEEN 10 and 12  
	)
THEN  (<INSERT MEASURE QUERY ITEM> )
ELSE (0)

******************************************************************************************************************************

YEAR TO DATE (YTD) calculation: 

IF
( <INSERT DATE QUERY ITEM> BETWEEN _make_timestamp(extract( year,<date_prompt> ),1,1) AND <date_prompt> )
THEN (<INSERT MEASURE QUERY ITEM>)
ELSE (  0  )