Lingo in a Nutshell

Math Functions

Director supports the usual complement of math functions, as shown in Table 8-2. Refer to Table 8-3 and Table 8-4 for exponentiation and trigonometric functions.

Table 8-2. Math Functions

Lingo Keyword	Usage and Range
[a]
[b]
[c]
abs()	Calculates the absolute value of a number. Returns float or integer. Used to calculate unsigned values, such as distances.
add()	The add command pertains only to lists and is not a mathematical function. See the “+” operator.
charToNum()[a]	Converts ASCII character to ASCII code. See numToChar().
FALSE	Constant equivalent to zero (0). See TRUE.
float()	Converts string or integer to floating-point value. See the floatPrecision.
floatP()	Returns TRUE if operand is a floating-point value.
the floatPrecision[b]	Determines the number of decimal places used to display floats (default is 4). Does not affect calculation accuracy.
INF or -INF[b]	Indicates an overflow condition caused by a number larger than maximum allowed float or an undefined value.
integer()	Rounds floats to the nearest integer. integer(-.5) is rounded to −1, not zero. Use value() to convert strings first.
integerP()	Returns TRUE if operand is an integer.
max()	Returns maximum number from a list or comma-delimited series. Also works with strings.
the maxInteger[b]	Returns the maximum supported integer (2147483647), which equals 231−1.
min()	Returns minimum number from a list or comma-delimited series. Also works with strings.
mod	Modulo division ...