add a Format_Currency function in SQL
add simple adhoc junit test
Merge branch 'master' into ENG-6265-add-format-currency-func
clean code and add some comment
Merge branch 'ENG-6265-add-format-currency-func' of https://github.com/VoltDB/voltdb into ENG-6265-add-format-currency-func
output integer directly, now works for all number types except the decimal type
add naive format function to decimal type
add more test cases
format decimal by converting it to the whole part and the fractional part
add member function to get whole and fractional part of a decimal
use static member function to help convert decimal to other types
fix a typo
Merge branch 'master' into ENG-6265-add-format-currency-func
use -INT64_MAX as the lower bound of decimal
round to the nearest, and add test case about it
convert everything to decimal, but we have some precision error
remove debug info
add the second para to the func, now need change test cases
add test case for 2nd parameter
fix my wrong rounding policy to banker's rounding