Function: math[inc], math[dec] - increase/decrease value of a variable
Calling Sequence:
inc(x);
inc(x, n);
dec(x);
dec(x, n);
Parameters:
x - the name of a variable
n - a numeric value
Description:
In the first form, inc increases the value of the variable x by adding the value 1.
In the second form, inc increases the value of the variable x by adding the value n.
In the first form, dec decreases the value of the variable x by subtracting the value 1.
In the second form, dec decreases the value of the variable x by subtracting the value n.
The return is the increased or decreased value of x, i.e. x is assigned the computed value.
This function is part of the math package, and so can be used only after performing the command with(math) or with(math, inc) resp. with(math, dec).
Examples:
> with(math):
> x := 1:
> inc(x);
> x;
> dec(x);
> inc(x, 2);
> dec(x, 0.5);
See Also:
Version History:
Version 1.0 - March 14, 1998