Arithmetic Functions

+ Monadic
APL: conjugate +7 ←→ 7
Q: does not seem to exist

+ dyadic
APL: addition
Q: addition

- Monadic
APL: negate
Q: - (negative)
Works like ¯ in APL, so it creates a negative number, rather than negating everything to the right.
Q: -3 + 1 ←→ -2
APL: -3 + 1 ←→ ¯4
If you want to negate everything to the right in Q use neg, e.g. neg 3 -3 45.5

- dyadic
APL: subtract
Q: subtract

× Monadic
APL: sign of (signum)
Q: ?

× dyadic
APL: multiply
Q: use * instead

÷ Monadic
APL: reciprocal
Q: does not exist, use 1% instead

÷ dyadic
APL: divide
Q: use % instead

- Monadic
APL: ceiling
Q: ?

- dyadic
APL: greater of
Q: use | instead

⌊ Monadic
APL: floor
Q: ?

⌊ dyadic
APL: lesser of
Q: use & instead

| Monadic
APL: absolute value
Q: ?

| dyadic
APL: residue
Q: ?