gsl-shell.git - gsl-shell

diff --git a/expr-print.lua b/expr-print.lua
index 4c73f44d..543ee58a 100644
--- a/expr-print.lua
+++ b/expr-print.lua

@@ -66,6 +66,11 @@ local function eval_operator(op, a, b)

elseif op == '=' then return (a == b and 1 or 0)

elseif op == '>' then return (a > b and 1 or 0)

elseif op == '<' then return (a < b and 1 or 0)

+ elseif op == '!=' then return (a ~= b and 1 or 0)

+ elseif op == '>=' then return (a >= b and 1 or 0)

+ elseif op == '<=' then return (a <= b and 1 or 0)

+ elseif op == 'AND' then return ((a ~= 0 and b ~= 0) and 1 or 0)

+ elseif op == 'OR' then return ((a ~= 0 or b ~= 0) and 1 or 0)

else error('unkown operation: ' .. op) end

end