Commodore 16 User Manual page 74

ATN(X) (arctangent)
INSTR (string 1, string 2 (,starting-position))
Returns the angle whose tangent is X, measured in radians.
COS(X) (cosine)
Returns the value of the cosine of X. where X is an angle measured in
radians
DEC (hexadecimal-string)
Returns decimal value of hexadecimal-string (0< hexadecimal-
string < FFFF)
EXAMPLE:
N=DEC("F4")
Returns position of string 2 in string 1 at or after the (starting-position)
.
The starting-position defaults to the beginning of string 2. It no match is
found. a value of 0 is returned.
EXAMPLE
PRINT INSTR("THE CAT IN THE HAT", "CAT")
the result is 5, because CAT starts at the fifth cnaracter in string I
INT(%) (integer)
Returns the integer portion of X. with all decimal places to the right of
the decimal point removed. The result is always less-than or equal to
X. Thus, any negative numbers with decimal places become the
integer less-than their current value (e.g. INT(-4.5)c-5).
If the INT function is to be used for rounding off, the form is INT(X + 5)
or INT(X - .5).
EXAMPLE:
EXP(X)
Returns the value of the mathematical constant e (2.71828183) raised
XaINT(X•100 + .5)/100
Rounds to the next highest penny
to the power Of X.
FNxx(x)
Returns the value of the user-defined function xx created in a DEF FNxx
statement
JOY (n)
When n 1
Position of joystick #1
n = 2
Position of joystick #2
Any value of 128 or more means the fire button is also depressed. The
direction is indicated as lolows.
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