-
Notifications
You must be signed in to change notification settings - Fork 15
/
random.jl
83 lines (54 loc) · 1.48 KB
/
random.jl
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
### RandomReal
@mkapprule RandomReal
@doap RandomReal() = return rand()
### Random
@sjdoc Random """
Random(Integer)
return 0 or 1 with equal probability.
Random(Integer, [lo,hi])
return a random integer between `lo` and `hi`, inclusive.
Random(Real)
return a random floating-point number between 0 and 1.
Random(Complex)
return a random complex floating-point number with parts between 0 and 1.
"""
@mkapprule Random
@doap Random() = rand()
@doap function Random(sym::SJSym)
if sym == :Integer
rand(0:1)
elseif sym == :Real
rand()
elseif sym == :Complex
complex(rand(),rand())
else
mx
end
end
@doap function Random(sym::SJSym, lst::ListT)
if sym == :Integer
rand(UnitRange(margs(lst)...))
end
end
### RandomInteger
@sjdoc RandomInteger """
Random([nmin,nmax])
return a random integer between `nmin` and `nmax`.
RandomInteger(nmax)
return a random integer between 0 and `nmax`.
RandomInteger()
return 0 or 1 with equal probablility.
RandomInteger(range, n)
return an array of `n` random integers
"""
@mkapprule RandomInteger
@doap RandomInteger() = rand(0:1)
@doap RandomInteger(n::Integer) = rand(0:n)
@doap RandomInteger(x::Mxpr{:List}) = _randintrange(margs(x)...)
_randintrange(n::Integer,m::Integer) = rand(n:m)
@doap function RandomInteger(x::Mxpr{:List},n::Integer)
lims = x[1]:x[2]
nargs = newargs(n)
for i=1:n nargs[i] = rand(lims) end
mxpr(:List,nargs)
end