pasta_lua 0.2.4

Pasta Lua - Lua integration for Pasta DSL
Documentation 
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

local ops = {}

function ops.uint32_lrot(a, bits)
   return ((a << bits) & 0xFFFFFFFF) | (a >> (32 - bits))
end

function ops.byte_xor(a, b)
   return a ~ b
end

function ops.uint32_xor_3(a, b, c)
   return a ~ b ~ c
end

function ops.uint32_xor_4(a, b, c, d)
   return a ~ b ~ c ~ d
end

function ops.uint32_ternary(a, b, c)
   -- c ~ (a & (b ~ c)) has less bitwise operations than (a & b) | (~a & c).
   return c ~ (a & (b ~ c))
end

function ops.uint32_majority(a, b, c)
   -- (a & (b | c)) | (b & c) has less bitwise operations than (a & b) | (a & c) | (b & c).
   return (a & (b | c)) | (b & c)
end

return ops