? ≡ ⌫ A/C = ≈ 7 8 9 + SUCC += +! 4 5 6 - PRED -= -! 1 2 3 * // *= ! 0 . (-) / % /= /! sin cos tan ** ⁻¹ ² ³ log ln e √x √ ∛ π τ φ ↑↑ slog ×2 ×3 i √2 θ PF 15% ½ ¼ UF OF ∞ ⌊x⌉ ⌊x⌋ ⌈x⌉ pre C |x| ±