How do I do an if greater than or less than for a if statement

I need to do a question wehre it needs to be greater than or less than a certain limit.

This is specifically over g force so it needs to be greater tha -8g and less than 8g otherwise it displays a fail message

Answer 1

[Jan]

if f <= -8 || f >= 8
    error('f is outside the valid range')
end

Alternative:

if abs(f) >= 8