(system-include "carp_double.h")

(defmodule Double
  (def pi 3.141592653589793)
  (def e 2.718281828459045)
  (register = (Fn [Double Double] Bool))
  (register < (Fn [Double Double] Bool))
  (register > (Fn [Double Double] Bool))
  (register neg (Fn [Double] Double))
  (register + (Fn [Double Double] Double))
  (register - (Fn [Double Double] Double))
  (register * (Fn [Double Double] Double))
  (register / (Fn [Double Double] Double))
  (register to-int (Fn [Double] Int))
  (register from-int (Fn [Int] Double))
  (register to-float (Fn [Double] Float))
  (register from-float (Fn [Float] Double))
  (register to-long (Fn [Double] Long))
  (register from-long (Fn [Long] Double))
  (register to-bytes (Fn [Double] Long))
  (register sin (Fn [Double] Double))
  (register cos (Fn [Double] Double))
  (register tan (Fn [Double] Double))
  (register acos (Fn [Double] Double))
  (register asin (Fn [Double] Double))
  (register atan (Fn [Double] Double))
  (register atan2 (Fn [Double Double] Double))
  (register cosh (Fn [Double] Double))
  (register sinh (Fn [Double] Double))
  (register tanh (Fn [Double] Double))
  (register exp (Fn [Double] Double))
  (register frexp (Fn [Double (Ref Int)] Double))
  (register ldexp (Fn [Double Int] Double))
  (register log (Fn [Double] Double))
  (register log10 (Fn [Double] Double))
  (register modf (Fn [Double (Ref Double)] Double))
  (register pow (Fn [Double Double] Double))
  (register sqrt (Fn [Double] Double))
  (register floor (Fn [Double] Double))
  (register ceil (Fn [Double] Double))
  (register mod (Fn [Double Double] Double))
  (register copy (Fn [(Ref Double)] Double))
  (register abs (Fn [Double] Double))

  (defn clamp [min, max, val]
    (if (> val max)
      max
      (if (< val min)
        min
        val)))

  (doc approx "checks whether x and y are approximately (i.e. margin of error of 0.00001) equal")
  (defn approx [x y]
    (if (> x y)
      (< (- x y) 0.00001)
      (< (- y x) 0.00001)))

  (defn /= [x y]
    (not (Double.= x y)))

  (defn zero []
    0.0)

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

(defmodule DoubleRef
  (defn = [a b]
    (Double.= @a @b))

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

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