Copy
-32768.0 .. 32767.99 -- numeric representation range
abs(x) -- x absolute value
atan2(dx, dy) -- convert (dx, dy) to an angle in [0..1]
band(x, y) -- bitwise conjunction
bnot(x) -- bitwise negation
bor(x, y) -- bitwise disjunction
bxor(x, y) -- bitwise exclusive disjunction
cos(x) -- x cosine, [0..1]
flr(x) -- round down
-flr(-x) -- not a function per se, but will work as ceil(x)
max(x, y) -- x/y maximum
mid(x, y, z) -- x/y/z middle value
min(x, y) -- x/y minimum
rnd(x) -- random; 0 <= n < x
sgn(x) -- returns argument sign: -1 or 1; sgn(0) = 1
shl(x, y) -- shift left
shr(x, y) -- shift right
sin(x) -- x sine, [0..1]; inverted
sqrt(x) -- x square root
srand(x) -- set random seed

Copy
::label:: -- label
goto label -- jump
if (<condition>) -- inline if
if <condition> then
 -- if block
elseif <condition> then
 -- elseif block
else
 -- else block
end
while <condition> do
 -- while block
end
repeat
 -- repeat block
until <condition>
for <var> = <first>, <last>, <step> do
 -- for block
end
for <var> in all(<table>) do
 -- for block
end
for <key>, <value> in pairs(<table>) do
 -- for block
end