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import Op, Value, Error, Input, match from require 'core.base'
unpack or= table.unpack
class ReduceOp extends Op
new: => super 'num'
setup: (inputs) =>
{ first, rest } = match 'num *num', inputs
super
first: Input.value first
rest: [Input.value v for v in *rest]
tick: =>
{ :first, :rest } = @unwrap_all!
accum = first
for val in *rest
accum = @.fn accum, val
@out\set accum
func_op = (arity, func) ->
class extends Op
new: => super 'num'
setup: (inputs) =>
{ params } = match '*num', inputs
if arity != '*'
err = Error 'argument', "need exactly #{arity} arguments"
assert #params == arity, err
super [Input.value p for p in *params]
tick: => @out\set func unpack @unwrap_all!
func_def = (name, args, func, summary) ->
_, arity = args\gsub ' ', ' '
Value.meta
meta:
:name
:summary
examples: { "(#{name} #{args})" }
value: func_op arity+1, func
evenodd_op = (remainder) ->
class extends Op
new: => super 'bool'
setup: (inputs) =>
{ val, div } = match 'num num?', inputs
super
val: Input.value val
div: Input.value div or Value.num 2
tick: =>
{ :val, :div } = @unwrap_all!
@out\set (val % div) == remainder
add = Value.meta
meta:
name: 'add'
summary: "Add values."
examples: { '(+ a b [c…])', '(add a b [c…])' }
description: "Sum all arguments."
value: class extends ReduceOp
fn: (a, b) -> a + b
sub = Value.meta
meta:
name: 'sub'
summary: "Subtract values."
examples: { '(- a b [c…])', '(sub a b [c…])' }
description: "Subtract all other arguments from `a`."
value: class extends ReduceOp
fn: (a, b) -> a - b
mul = Value.meta
meta:
name: 'mul'
summary: "Multiply values."
examples: { '(* a b [c…])', '(mul a b [c…])' }
value: class extends ReduceOp
fn: (a, b) -> a * b
div = Value.meta
meta:
name: 'div'
summary: "Divide values."
examples: { '(/ a b [c…])', '(div a b [c…])' }
description: "Divide `a` by all other arguments."
value: class extends ReduceOp
fn: (a, b) -> a / b
pow = Value.meta
meta:
name: 'pow'
summary: "Raise to a power."
examples: { '(^ base exp)', '(pow base exp' }
description: "Raise `base` to the power `exp`."
value: class extends ReduceOp
fn: (a, b) -> a ^ b
mod = Value.meta
meta:
name: 'mod'
summary: 'Modulo operator.'
examples: { '(% num div)', '(mod num div)' }
description: "Calculate remainder of division by `div`."
value: func_op 2, (a, b) -> a % b
even = Value.meta
meta:
name: 'even'
summary: 'Check whether val is even.'
examples: { '(even val [div])' }
description: "`true` if dividing `val` by `div` has remainder zero.
`div` defaults to 2."
value: evenodd_op 0
odd = Value.meta
meta:
name: 'odd'
summary: 'Check whether val is odd.'
examples: { '(odd val [div])' }
description: "`true` if dividing `val` by `div` has remainder one.
`div` defaults to 2."
value: evenodd_op 1
mix = Value.meta
meta:
name: 'mix'
summary: 'Linearly interpolate.'
examples: { '(mix a b i)' }
description: "Interpolate between `a` and `b` using `i` in range 0-1."
value: func_op 3, (a, b, i) -> i*b + (1-i)*a
min = Value.meta
meta:
name: 'min'
summary: "Find the minimum."
examples: { '(min a b [c…])' }
description: "Return the lowest of arguments."
value: func_op '*', math.min
max = Value.meta
meta:
name: 'max'
summary: "Find the maximum."
examples: { '(max a b [c…])' }
description: "Return the highest of arguments."
value: func_op '*', math.min
cos = func_def 'cos', 'alpha', math.cos, "Cosine function (radians)."
sin = func_def 'sin', 'alpha', math.sin, "Sine function (radians)."
tan = func_def 'tan', 'alpha', math.tan, "Tangent function (radians)."
acos = func_def 'acos', 'cos', math.acos, "Inverse cosine function (radians)."
asin = func_def 'asin', 'sin', math.asin, "Inverse sine function (radians)."
atan = func_def 'atan', 'tan', math.atan, "Inverse tangent function (radians)."
atan2 = func_def 'atan2', 'y x', math.atan2, "Inverse tangent function (two argument version)."
cosh = func_def 'cosh', 'alpha', math.cosh, "Hyperbolic cosine function (radians)."
sinh = func_def 'sinh', 'alpha', math.sinh, "Hyperbolic sine function (radians)."
tanh = func_def 'tanh', 'alpha', math.tanh, "Hyperbolic tangent function (radians)."
floor = func_def 'floor', 'val', math.floor, "Round towards negative infinity."
ceil = func_def 'ceil', 'val', math.ceil, "Round towards positive infinity."
abs = func_def 'abs', 'val', math.abs, "Get the absolute value."
exp = func_def 'exp', 'exp', math.floor, "*e* number raised to a power."
log = func_def 'log', 'val base', math.log, "Logarithm with given base."
log10 = func_def 'log10', 'val', math.log10, "Logarithm with base 10."
sqrt = func_def 'sqrt', 'val', math.sqrt, "Square root function."
{
:add, '+': add
:sub, '-': sub
:mul, '*': mul
:div, '/': div
:pow, '^': pow
:mod, '%': mod
:even, :odd
:mix
:min, :max
pi: with Value.wrap math.pi
.meta = summary: 'The pi constant.'
tau: with Value.wrap math.pi*2
.meta = summary: 'The tau constant.'
huge: with Value.wrap math.huge
.meta = summary: 'Positive infinity constant.'
:sin, :cos, :tan
:asin, :acos, :atan, :atan2
:sinh, :cosh, :tanh
:floor, :ceil, :abs
:exp, :log, :log10, :sqrt
}
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