Variable * variable_move(Environment *_environment, char *_source, char *_destination)
Store the value of a variable inside another variable by converting it.
Variable * variable_div(Environment *_environment, char *_source, char *_destination, char *_remainder)
Make a division between two variable and return the product of them.
Variable * x_text_get(Environment *_environment, char *_x)
Return the graphic abscissa for the given text abscissa.