Carp/core/Byte.carp

(system-include "carp_byte.h")

(defmodule Byte
  (register + (λ [Byte Byte] Byte))
  (register - (λ [Byte Byte] Byte))
  (register * (λ [Byte Byte] Byte))
  (register / (λ [Byte Byte] Byte))
  (register < (λ [Byte Byte] Bool))
  (register > (λ [Byte Byte] Bool))
  (register = (λ [Byte Byte] Bool))
  (register mod (λ [Byte Byte] Byte))
  (register bit-shift-left (λ [Byte Byte] Byte))
  (register bit-shift-right (λ [Byte Byte] Byte))
  (register bit-and (λ [Byte Byte] Byte))
  (register bit-or (λ [Byte Byte] Byte))
  (register bit-xor (λ [Byte Byte] Byte))
  (register bit-not (λ [Byte] Byte))
  (register inc (λ [Byte] Byte))
  (register dec (λ [Byte] Byte))
  (register copy (λ [&Byte] Byte))
  (register to-int (λ [Byte] Int))
  (register from-int (λ [Int] Byte))

  (defn even? [a] (= (mod a 2b) 0b))
  (defn odd? [a] (not (even? a)))

  (defn zero [] 0b)

  (defn add-ref [x y]
    (Byte.+ @x @y))

  ;; Move to generic math module?
  (defn clamp [min, max, val]
    (if (> val max)
      max
      (if (< val min)
        min
        val)))

  (doc pow "Raise x to the power of y.")
  (defn pow [x y]
    (let-do [r 1b]
      (while (/= y 0b)
        (do
          (when (/= (bit-and y 1b) 0b)
            (set! r (* r x)))
          (set! y (/ y 2b))
          (set! x (* x x))))
      r))
)

(defmodule ByteRef
  (defn = [a b]
    (Byte.= @a @b))

  (defn < [a b]
    (Byte.< @a @b))

  (defn > [a b]
    (Byte.> @a @b))
)