# Functions

Functions can be used by inserting the name of the function followed by the function argument. If the argument is not a number or variable then use parenthesis around the argument.

sin 30

abs (5−9)

The following functions are defined.

abs | Absolute Value
cos | Cosinus
cosh | Hyperbolic Cosine
frac | Fractional Component
int | Integer Component
ln | Natural Logarithm
log | Logarithm
not | Boolean NOT
ones | Ones complement
sin | Sinus
sinh | Hyperbolic Sine
sqrt | Square Root
tan | Tangent
tanh | Hyperbolic Tangent
twos | Twos complement

GCalctool does not support user-defined functions.