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JeffreySarnoff/unsigned16.jl

Created November 14, 2012 07:07
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a persistently unsigned 16bit type
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unsigned16.jl
# unsigned16.jl
#
# A preliminary cut at an always unsigned always 16bits wide type
#
# use : Just require this file, it self imports.
#
# uvalue16 = unsd16(number)
# typeof(uvalue16) == Unsd16
#
# exports: Unsd16, unsd16,
# ~, &, |, $, <<, >>, >>>,
# ==, !=, >=, <, >, <=,
# - , +, *, /, %, ^,
# mod, rem, div, fld,
# iseven, isodd, gcd, gcdx, invmod,
# leading_zeros, leading_ones, trailing_zeros, trailing_ones
#
# author: Jeffrey Sarnoff
# date : 2012-11-14 01:58:00 America/New_York
#
# status: Prerelease: loads & goes for me, untested functions.
# Suggestions Are Welcome.
module unsigned16
using Base
import Base.~ ,
Base.& ,
Base.| ,
Base.$ ,
Base.>> ,
Base.<< ,
Base.>>> ,
Base.== ,
Base.!= ,
Base.<= ,
Base.> ,
Base.< ,
Base.>= ,
Base.iseven ,
Base.isodd ,
Base.- ,
Base.+ ,
Base.* ,
Base./ ,
Base.% ,
Base.mod ,
Base.rem ,
Base.div ,
Base.fld ,
Base.^ ,
Base.gcd ,
Base.gcdx ,
Base.invmod ,
Base.leading_zeros ,
Base.leading_ones ,
Base.trailing_zeros ,
Base.trailing_ones ,
Base.Uint8 ,
Base.Uint16 ,
Base.Uint32 ,
Base.Uint64 ,
Base.Uint128 ,
Base.uint8 ,
Base.uint16 ,
Base.uint32 ,
Base.uint64 ,
Base.uint128 ,
Base.Int8 ,
Base.Int16 ,
Base.Int32 ,
Base.Int64 ,
Base.Int128 ,
Base.convert ,
Base.promote_rule
export
Unsd16, unsd16,
reinterpret, convert, promote_rule,
uint8, uint16, uint32, uint64, uint128,
int8, int16, int32, int64, int128,
show, print, convert,
~, &, |, $, <<, >>, >>>, ==, !=, >=, <, >, <=,
-, +, *, /, ^, %, mod, rem, div, fld,
leading_zeros, leading_ones, trailing_zeros, trailing_ones
# PROBLEM DEFINING AND EXPORTING ===
# partway to genericly NBITS
Uints = Union(Uint8, Uint16, Uint32, Uint64, Uint128)
Sints = Union(Int8, Int16, Int32, Int64, Int128)
SUint = Union(Int32, Int64, Uint32, Uint64)
NBITS = 16
bitstype NBITS Unsd16 <: Unsigned
typealias UnsdT Unsd16
typealias UintT Uint16
typealias SintT Int16
uintT = uint16
sintT = int16
# double and quadruple bitwidth types for extended intermediate precision
doub_bits(UnsdT) = Uint32
quad_bits(UnsdT) = Uint64
doub_bits(UintT) = Uint32
quad_bits(UintT) = Uint64
doub_bits(SintT) = Int32
quad_bits(SintT) = Int64
# coersions
reinterpret{T<:UnsdT, S<:UintT}(::Type{T}, u::S) = box(T, unbox(S, u))
reinterpret{T<:UnsdT, S<:SintT}(::Type{T}, u::S) = box(T, unbox(S, u))
reinterpret{T<:UintT, S<:UnsdT}(::Type{T}, u::S) = box(T, unbox(S, u))
reinterpret{T<:SintT, S<:UnsdT}(::Type{T}, u::S) = box(T, unbox(S, u))
reinterpret{T<:UnsdT, S<:Uints}(::Type{T}, u::S) =
box(UnsdT, unbox(UintT, convert(UintT, u)))
reinterpret{T<:UnsdT, S<:Sints}(::Type{T}, s::S) =
box(UnsdT, unbox(UintT, convert(UintT, convert(Unsigned,s))))
reinterpret{T<:Uints, S<:UnsdT}(::Type{T}, u::S) = convert(T, box(UintT, unbox(UnsdT, u)))
reinterpret{T<:Sints, S<:UnsdT}(::Type{T}, u::S) = convert(T, box(UintT, unbox(UnsdT, u)))
# unsdT( union(Uints,Sints) )
unsd16(u::UintT) = reinterpret(UnsdT, u)
unsd16(s::SintT) = reinterpret(UnsdT, s)
unsd16(u::Uints) = reinterpret(UnsdT, u)
unsd16(s::Sints) = reinterpret(UnsdT, s)
unsdT = unsd16
uint16(u::UnsdT) = reinterpret(UintT, u)
int16(u::UnsdT) = reinterpret(SintT, u)
uint8 (u::UnsdT) = convert(Uint8 , reinterpret(UintT, u))
uint32 (u::UnsdT) = convert(Uint32 , reinterpret(UintT, u))
uint64 (u::UnsdT) = convert(Uint64 , reinterpret(UintT, u))
uint128(u::UnsdT) = convert(Uint128, reinterpret(UintT, u))
int8 (u::UnsdT) = convert(Int8 , reinterpret(UintT, u))
int32 (u::UnsdT) = convert(Int32 , reinterpret(UintT, u))
int64 (u::UnsdT) = convert(Int64 , reinterpret(UintT, u))
int128(u::UnsdT) = convert(Int128 , reinterpret(UintT, u))
# conversions
convert(::Type{UnsdT} , u::Uint8) = reinterpret(UnsdT, uintT(u))
convert(::Type{UnsdT} , u::Uint16) = reinterpret(UnsdT, uintT(u))
convert(::Type{UnsdT} , u::Uint32) = reinterpret(UnsdT, uintT(u))
convert(::Type{UnsdT} , u::Uint64) = reinterpret(UnsdT, uintT(u))
convert(::Type{UnsdT} , u::Uint128) = reinterpret(UnsdT, uintT(u))
convert(::Type{UnsdT} , s::Int8) = reinterpret(UnsdT, uintT(reinterpret(Uint8 , s)))
convert(::Type{UnsdT} , s::Int16) = reinterpret(UnsdT, uintT(reinterpret(Uint16 , s)))
convert(::Type{UnsdT} , s::Int32) = reinterpret(UnsdT, uintT(reinterpret(Uint32 , s)))
convert(::Type{UnsdT} , s::Int64) = reinterpret(UnsdT, uintT(reinterpret(Uint64 , s)))
convert(::Type{UnsdT} , s::Int128) = reinterpret(UnsdT, uintT(reinterpret(Uint128, s)))
convert(::Type{Uint8} , u::UnsdT) = uint8 (reinterpret(UintT, u))
convert(::Type{Uint16} , u::UnsdT) = uint16 (reinterpret(UintT, u))
convert(::Type{Uint32} , u::UnsdT) = uint32 (reinterpret(UintT, u))
convert(::Type{Uint64} , u::UnsdT) = uint64 (reinterpret(UintT, u))
convert(::Type{Uint128}, u::UnsdT) = uint128(reinterpret(UintT, u))
convert(::Type{Int8} , u::UnsdT) = int8 (reinterpret(UintT, u))
convert(::Type{Int16} , u::UnsdT) = int16 (reinterpret(UintT, u))
convert(::Type{Int32} , u::UnsdT) = int32 (reinterpret(UintT, u))
convert(::Type{Int64} , u::UnsdT) = int64 (reinterpret(UintT, u))
convert(::Type{Int128}, u::UnsdT) = int128(reinterpret(UintT, u))
# promotions
promote_rule(::Type{UnsdT}, ::Type{Uint8}) = UnsdT
promote_rule(::Type{UnsdT}, ::Type{Uint16 }) = UnsdT # Uint16
promote_rule(::Type{UnsdT}, ::Type{Uint32 }) = UnsdT # Uint32
promote_rule(::Type{UnsdT}, ::Type{Uint64 }) = UnsdT # Uint64
promote_rule(::Type{UnsdT}, ::Type{Uint128}) = UnsdT # Uint128
promote_rule(::Type{UnsdT}, ::Type{Int8}) = UnsdT
promote_rule(::Type{UnsdT}, ::Type{Int16 }) = UnsdT # Int16
promote_rule(::Type{UnsdT}, ::Type{Int32 }) = UnsdT # Int32
promote_rule(::Type{UnsdT}, ::Type{Int64 }) = UnsdT # Int64
promote_rule(::Type{UnsdT}, ::Type{Int128}) = UnsdT # Int128
# leading_[zeros,ones] trailing_[zeros,ones]
leading_zeros (u::UnsdT) = leading_zeros (reinterpret(UintT,u))
leading_ones (u::UnsdT) = leading_ones (reinterpret(UintT,u))
trailing_zeros(u::UnsdT) = trailing_zeros(reinterpret(UintT,u))
trailing_ones (u::UnsdT) = trailing_ones (reinterpret(UintT,u))
# show, print
show (io::IO, u::UnsdT) = show (io, reinterpret(UintT,u) )
print(io::IO, u::UnsdT) = print(io, reinterpret(UintT,u) )
# logical operators
(~)(u::UnsdT ) = box(UnsdT,not_int(reinterpret(UintT,u)))
(&)(u::UnsdT, v::UnsdT ) = box(UnsdT,and_int(unbox(UnsdT,u), unbox(UnsdT,v)))
(|)(u::UnsdT, v::UnsdT ) = box(UnsdT,or_int(unbox(UnsdT,u) , unbox(UnsdT,v)))
($)(u::UnsdT, v::UnsdT ) = box(UnsdT,xor_int(unbox(UnsdT,u), unbox(UnsdT,v)))
(<<) (u::UnsdT, v::UnsdT ) = box(UnsdT, shl_int(unbox(UnsdT,u), unbox(UnsdT,v)))
(>>) (u::UnsdT, v::UnsdT ) = box(UnsdT, lshr_int(unbox(UnsdT,u), unbox(UnsdT,v)))
(>>>)(u::UnsdT, v::UnsdT ) = box(UnsdT, lshr_int(unbox(UnsdT,u), unbox(UnsdT,v)))
(<<) (u::UnsdT, v::UintT ) = box(UnsdT, shl_int(unbox(UnsdT,u), unbox(UintT ,v)))
(>>) (u::UnsdT, v::UintT ) = box(UnsdT, lshr_int(unbox(UnsdT,u), unbox(UintT ,v)))
(>>>)(u::UnsdT, v::UintT ) = box(UnsdT, lshr_int(unbox(UnsdT,u), unbox(UintT ,v)))
(!=)(u::UnsdT, v::UnsdT) =
neq_int(unbox(UintT,box(UintT,unbox(UnsdT,u))), unbox(UintT,box(UintT,unbox(UnsdT,v))))
(<)(u::UnsdT, v::UnsdT) =
ult_int(unbox(UintT,box(UintT,unbox(UnsdT,u))), unbox(UintT,box(UintT,unbox(UnsdT,v))))
(<=)(u::UnsdT, v::UnsdT) =
ule_int(unbox(UintT,box(UintT,unbox(UnsdT,u))), unbox(UintT,box(UintT,unbox(UnsdT,v))))
(>)(u::UnsdT, v::UnsdT) = !(u <= v)
(>=)(u::UnsdT, v::UnsdT) = !(u < v)
# (===)(u::UnsdT, v::UnsdT) = (===)(box(UintT,unbox(UnsdT,u)),box(UintT,unbox(UnsdT,v)))
#invalid method definition: not a generic function
(iseven)(u::UnsdT ) = iseven(reinterpret(UintT,u))
(isodd)(u::UnsdT ) = isodd(reinterpret(UintT,u))
(-)(u::UnsdT ) = box(UnsdT,neg_int(reinterpret(UintT,u)))
(+)(u::UnsdT, v::UnsdT ) = box(UnsdT,add_int(unbox(UnsdT,u),unbox(UnsdT,v)))
(-)(u::UnsdT, v::UnsdT ) = box(UnsdT,sub_int(unbox(UnsdT,u),unbox(UnsdT,v)))
(*)(u::UnsdT, v::UnsdT ) = box(UnsdT,mul_int(unbox(UnsdT,u),unbox(UnsdT,v)))
(^)(u::UnsdT, v::UnsdT ) = convert(UnsdT, (^)(reinterpret(UintT,u),reinterpret(UintT,v)))
(/)(u::UnsdT, v::UnsdT) = convert(UnsdT, (div)(reinterpret(UintT,u),reinterpret(UintT,v)))
(%)(u::UnsdT, v::UnsdT) = convert(UnsdT, (%)(reinterpret(UintT,u),reinterpret(UintT,v)))
(div)(u::UnsdT, v::UnsdT) = convert(UnsdT, (div)(reinterpret(UintT,u),reinterpret(UintT,v)))
(mod)(u::UnsdT, v::UnsdT) = convert(UnsdT, (mod)(reinterpret(UintT,u),reinterpret(UintT,v)))
(rem)(u::UnsdT, v::UnsdT) = convert(UnsdT, (rem)(reinterpret(UintT,u),reinterpret(UintT,v)))
(fld)(u::UnsdT, v::UnsdT) = convert(UnsdT, (fld)(reinterpret(UintT,u),reinterpret(UintT,v)))
(gcd)(u::UnsdT, v::UnsdT) = convert(UnsdT, (gcd)(reinterpret(UintT,u),reinterpret(UintT,v)))
(invmod)(u::UnsdT, v::UnsdT) = convert(UnsdT, (invmod)(reinterpret(UintT,u),reinterpret(UintT,v)))
(gcdx)(u::UnsdT, v::UnsdT) = map(x->convert(UnsdT,x), (gcdx)(reinterpret(UintT,u),reinterpret(UintT,v)))
end # module
using unsigned16
import unsigned16.Unsd16, unsigned16.unsd16,
unsigned16.reinterpret, unsigned16.convert, unsigned16.promote_rule,
unsigned16.uint8, unsigned16.uint16, unsigned16.uint32, unsigned16.uint64, unsigned16.uint128,
unsigned16.int8, unsigned16.int16, unsigned16.int32, unsigned16.int64, unsigned16.int128,
unsigned16.show, unsigned16.print,
unsigned16.~, unsigned16.&, unsigned16.|, unsigned16.$,
unsigned16.<<, unsigned16.>>, unsigned16.>>>,
unsigned16.iseven, unsigned16.isodd, unsigned16.gcd, unsigned16.gcdx, unsigned16.invmod,
unsigned16.-, unsigned16.+, unsigned16.*, unsigned16./, unsigned16.%,
unsigned16.mod,unsigned16.div, unsigned16.rem, unsigned16.fld,
unsigned16.leading_zeros, unsigned16.leading_ones,
unsigned16.trailing_zeros, unsigned16.trailing_ones
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