Commodore VIC-20 - Page 388

374 The VIC 20 User Guide
FRE can be used anywhere a function may appear, but it is normally
used in
an immediate mode PRINT statement.
Example:
?FRE(1)
INT
Institute garbage collection and print the
number
of free bytes
INT returns the integer portion of a number, rounding to the next lower
signed number.
Format:
INT(arg n)
For positive numbers, INT is equivalent to dropping the fractional
portion
of the number without rounding. For negative numbers, INT is
equivalent to dropping the fractional portion of the number and adding
1.
Note that INT does not convert a floating point number (5 bytes) to integer
type
(2 bytes).
Example:
A-INT(I.5)
A·INT(-1.5)
XIII I NT( -0.1)
Results in A= 1
Results in
A=-2
Results in X=-l
A caution here: Since floating point numbers are only close approxima-
tions
of real numbers, an argument may not yield the exact INT function
value you might expect.
For instance, consider the number 3.89999999. The
function *INT(3.89999999) would yield a 3 answer, not 4 as would be
expected.
IIFT$
?INT(3.S9999999)
3
LEFT$ returns the leftmost characters of a string.