Note: This is a work in progress and many formatting issues have been fixed. Read more about the project on the home page.
Value returned: a number equal to the square root of number
. If number
is negative, sqrt
returns NAN(001)
, which means “not a number.”
An expression that evaluates to a number.
For example:
Note: Formally, HyperCard distinguishes between factors (simple values) and expressions. The difference between factors and expression matters only if you like to drop parentheses. Most functions take factors as their parameters, which is why abs of -10 + 2
returns 12
and abs of (-10 + 2)
returns 8
. In short, always use parentheses to group things the way you want them to evaluate, and you won’t have to worry about the difference between factors and expressions.