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integrate precision into Acb

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kalmarek 2020-05-15 14:52:36 +02:00
parent c62d59811f
commit d9bb982c84
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GPG Key ID: 8BF1A3855328FC15
1 changed files with 20 additions and 17 deletions
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37
src/nemo_utils.jl
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@ -43,11 +43,13 @@ const libarb = Nemo.libarb
mutable struct AcbVector <: AbstractVector{acb_struct}
ptr::Ptr{acb_struct}
length::Int
precision::Int
function AcbVector(n::Int)
function AcbVector(n::Integer, precision::Integer)
v = new(
ccall((:_acb_vec_init, libarb), Ptr{acb_struct}, (Clong,), n),
n,
precision
)
finalizer(clear!, v)
return v
@ -56,6 +58,7 @@ end
Base.cconvert(::Type{Ptr{acb_struct}}, acb_v::AcbVector) = acb_v.ptr
Base.size(acb_v::AcbVector) = (acb_v.length,)
Base.precision(acb_v::AcbVector) = acb_v.precision
function clear!(acb_v::AcbVector)
ccall(
@ -67,22 +70,16 @@ function clear!(acb_v::AcbVector)
)
end
function (C::AcbField)(z::acb_struct)
res = zero(C)
ccall((:acb_set, libarb), Cvoid, (Ref{acb}, Ref{acb_struct}), res, z)
return res
end
_get_ptr(acb_v::AcbVector, i::Int = 1) =
acb_v.ptr + (i - 1) * sizeof(acb_struct)
Base.@propagate_inbounds function Base.getindex(acb_v::AcbVector, i::Integer)
@boundscheck checkbounds(acb_v, i)
return unsafe_load(acb_v.ptr, i)
end
function AcbVector(v::AbstractVector{Nemo.acb})
acb_v = AcbVector(length(v))
_get_ptr(acb_v::AcbVector, i::Int = 1) =
acb_v.ptr + (i - 1) * sizeof(acb_struct)
function AcbVector(v::AbstractVector{Nemo.acb}, p = prec(parent(first(v))))
acb_v = AcbVector(length(v), p)
for (i, val) in zip(eachindex(acb_v), v)
ccall(
(:acb_set, libarb),
@ -96,7 +93,6 @@ function AcbVector(v::AbstractVector{Nemo.acb})
end
function approx_eig_qr!(v::AcbVector, R::acb_mat, A::acb_mat)
n = nrows(A)
ccall(
(:acb_mat_approx_eig_qr, Nemo.libarb),
Cint,
@ -120,13 +116,21 @@ function approx_eig_qr!(v::AcbVector, R::acb_mat, A::acb_mat)
return v
end
function (C::AcbField)(z::acb_struct)
res = zero(C)
ccall((:acb_set, libarb), Cvoid, (Ref{acb}, Ref{acb_struct}), res, z)
return res
end
function LinearAlgebra.eigvals(A::Nemo.acb_mat)
n = nrows(A)
λ_approx = AcbVector(n)
CC = base_ring(A)
p = prec(CC)
λ_approx = AcbVector(n, p)
R_approx = similar(A)
v = approx_eig_qr!(λ_approx, R_approx, A)
λ = AcbVector(n)
λ = AcbVector(n, p)
b = ccall(
(:acb_mat_eig_multiple, Nemo.libarb),
Cint,
@ -135,10 +139,9 @@ function LinearAlgebra.eigvals(A::Nemo.acb_mat)
A,
λ_approx,
R_approx,
prec(base_ring(A)),
p,
)
CC = base_ring(A)
return CC.(λ)
end