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numbers.clj
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numbers.clj
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(ns clojush.instructions.numbers
(:use [clojush.pushstate]
[clojush.util]))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; instructions for numbers
(defn adder
"Returns a function that pushes the sum of the top two items."
[type]
(fn [state]
(if (not (empty? (rest (type state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (keep-number-reasonable (+' first second)) type)))
state)))
(define-registered integer_add (with-meta (adder :integer) {:stack-types [:integer]}))
(define-registered float_add (with-meta (adder :float) {:stack-types [:float]}))
(defn subtracter
"Returns a function that pushes the difference of the top two items."
[type]
(fn [state]
(if (not (empty? (rest (type state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (keep-number-reasonable (- second first)) type)))
state)))
(define-registered integer_sub (with-meta (subtracter :integer) {:stack-types [:integer]}))
(define-registered float_sub (with-meta (subtracter :float) {:stack-types [:float]}))
(defn multiplier
"Returns a function that pushes the product of the top two items."
[type]
(fn [state]
(if (not (empty? (rest (type state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (keep-number-reasonable (*' second first)) type)))
state)))
(define-registered integer_mult (with-meta (multiplier :integer) {:stack-types [:integer]}))
(define-registered float_mult (with-meta (multiplier :float) {:stack-types [:float]}))
(defn divider
"Returns a function that pushes the quotient of the top two items. Does
nothing if the denominator would be zero."
[type]
(fn [state]
(if (and (not (empty? (rest (type state))))
(not (zero? (stack-ref type 0 state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (if (= type :integer)
(truncate (keep-number-reasonable (/ second first)))
(keep-number-reasonable (/ second first)))
type)))
state)))
(define-registered integer_div (with-meta (divider :integer) {:stack-types [:integer]}))
(define-registered float_div (with-meta (divider :float) {:stack-types [:float]}))
(defn modder
"Returns a function that pushes the modulus of the top two items. Does
nothing if the denominator would be zero."
[type]
(fn [state]
(if (and (not (empty? (rest (type state))))
(not (zero? (stack-ref type 0 state))))
(let [frst (stack-ref type 0 state)
scnd (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (if (= type :integer)
(truncate (keep-number-reasonable (mod scnd frst)))
(keep-number-reasonable (mod scnd frst)))
type)))
state)))
(define-registered integer_mod (with-meta (modder :integer) {:stack-types [:integer]}))
(define-registered float_mod (with-meta (modder :float) {:stack-types [:float]}))
(defn comparer
"Returns a function that pushes the result of comparator of the top two items
on the 'type' stack onto the boolean stack."
[type comparator]
(fn [state]
(if (not (empty? (rest (type state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (comparator second first) :boolean)))
state)))
(define-registered integer_lt (with-meta (comparer :integer <) {:stack-types [:integer :boolean]}))
(define-registered integer_lte (with-meta (comparer :integer <=) {:stack-types [:integer :boolean]}))
(define-registered integer_gt (with-meta (comparer :integer >) {:stack-types [:integer :boolean]}))
(define-registered integer_gte (with-meta (comparer :integer >=) {:stack-types [:integer :boolean]}))
(define-registered float_lt (with-meta (comparer :float <) {:stack-types [:float :boolean]}))
(define-registered float_lte (with-meta (comparer :float <=) {:stack-types [:float :boolean]}))
(define-registered float_gt (with-meta (comparer :float >) {:stack-types [:float :boolean]}))
(define-registered float_gte (with-meta (comparer :float >=) {:stack-types [:float :boolean]}))
(define-registered
integer_fromboolean
^{:stack-types [:integer :boolean]}
(fn [state]
(if (not (empty? (:boolean state)))
(let [item (stack-ref :boolean 0 state)]
(->> (pop-item :boolean state)
(push-item (if item 1 0) :integer)))
state)))
(define-registered
float_fromboolean
^{:stack-types [:float :boolean]}
(fn [state]
(if (not (empty? (:boolean state)))
(let [item (stack-ref :boolean 0 state)]
(->> (pop-item :boolean state)
(push-item (if item 1.0 0.0) :float)))
state)))
(define-registered
integer_fromfloat
^{:stack-types [:integer :float]}
(fn [state]
(if (not (empty? (:float state)))
(let [item (stack-ref :float 0 state)]
(->> (pop-item :float state)
(push-item (truncate item) :integer)))
state)))
(define-registered
float_frominteger
^{:stack-types [:integer :float]}
(fn [state]
(if (not (empty? (:integer state)))
(let [item (stack-ref :integer 0 state)]
(->> (pop-item :integer state)
(push-item (*' 1.0 item) :float)))
state)))
(define-registered
integer_fromstring
^{:stack-types [:integer :string]}
(fn [state]
(if (not (empty? (:string state)))
(try (pop-item :string
(push-item (keep-number-reasonable (Long/parseLong (top-item :string state)))
:integer state))
(catch Exception e state))
state)))
(define-registered
float_fromstring
^{:stack-types [:float :string]}
(fn [state]
(if (not (empty? (:string state)))
(try (pop-item :string
(push-item (keep-number-reasonable (Float/parseFloat (top-item :string state)))
:float state))
(catch Exception e state))
state)))
(define-registered
integer_fromchar
^{:stack-types [:integer :char]}
(fn [state]
(if (not (empty? (:char state)))
(let [item (stack-ref :char 0 state)]
(->> (pop-item :char state)
(push-item (int item) :integer)))
state)))
(define-registered
float_fromchar
^{:stack-types [:float :char]}
(fn [state]
(if (not (empty? (:char state)))
(let [item (stack-ref :char 0 state)]
(->> (pop-item :char state)
(push-item (float (int item)) :float)))
state)))
(defn minner
"Returns a function that pushes the minimum of the top two items."
[type]
(fn [state]
(if (not (empty? (rest (type state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (min second first) type)))
state)))
(define-registered integer_min (with-meta (minner :integer) {:stack-types [:integer]}))
(define-registered float_min (with-meta (minner :float) {:stack-types [:float]}))
(defn maxer
"Returns a function that pushes the maximum of the top two items."
[type]
(fn [state]
(if (not (empty? (rest (type state))))
(let [first (stack-ref type 0 state)
second (stack-ref type 1 state)]
(->> (pop-item type state)
(pop-item type)
(push-item (max second first) type)))
state)))
(define-registered integer_max (with-meta (maxer :integer) {:stack-types [:integer]}))
(define-registered float_max (with-meta (maxer :float) {:stack-types [:float]}))
(define-registered
float_sin
^{:stack-types [:float]}
(fn [state]
(if (not (empty? (:float state)))
(push-item (keep-number-reasonable (Math/sin (stack-ref :float 0 state)))
:float
(pop-item :float state))
state)))
(define-registered
float_cos
^{:stack-types [:float]}
(fn [state]
(if (not (empty? (:float state)))
(push-item (keep-number-reasonable (Math/cos (stack-ref :float 0 state)))
:float
(pop-item :float state))
state)))
(define-registered
float_tan
^{:stack-types [:float]}
(fn [state]
(if (not (empty? (:float state)))
(push-item (keep-number-reasonable (Math/tan (stack-ref :float 0 state)))
:float
(pop-item :float state))
state)))
(define-registered
integer_inc
^{:stack-types [:integer]}
(fn [state]
(if (not (empty? (:integer state)))
(push-item (keep-number-reasonable (inc (stack-ref :integer 0 state)))
:integer
(pop-item :integer state))
state)))
(define-registered
integer_dec
^{:stack-types [:integer]}
(fn [state]
(if (not (empty? (:integer state)))
(push-item (keep-number-reasonable (dec (stack-ref :integer 0 state)))
:integer
(pop-item :integer state))
state)))
(define-registered
float_inc
^{:stack-types [:float]}
(fn [state]
(if (not (empty? (:float state)))
(push-item (keep-number-reasonable (inc (stack-ref :float 0 state)))
:float
(pop-item :float state))
state)))
(define-registered
float_dec
^{:stack-types [:float]}
(fn [state]
(if (not (empty? (:float state)))
(push-item (keep-number-reasonable (dec (stack-ref :float 0 state)))
:float
(pop-item :float state))
state)))