Trunc   built-in function

The Trunc function returns the truncation of a numeric value. Normally, the truncation eliminates the trailing decimal portion of the number. Alternatively, an optional number of trailing decimal digits can be specified.

Observe: the result will never in exponential form. Consequently, the resulting number can be long.

The numeric value is NOT rounded upward when the digit that follows the truncation position is greater than or equal to 5.

result = Trunc( number [, n ] )

number

the numeric value to truncate

n

an optional number of trailing decimal digits to retain. The default is zero trailing digits.

Examples: say Trunc( 42.3 ) -- shows: 42 say Trunc( 41.5 ) -- shows: 41, Surprise ! say Trunc( 41.95, 1 ) -- shows: 41.9 say Trunc( 41.95, 3 ) -- shows: 41.950 say Trunc( 3988292384 / 2 ) -- shows: 1994146190