Created
July 31, 2014 19:56
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module firmod | |
type FIR{in_t,coef_t} | |
in::Vector{in_t} | |
coef::Vector{coef_t} | |
function FIR (coef::Vector{coef_t}) | |
new (zeros (in_t, size (coef)), copy (coef)) | |
end | |
end | |
function shift! (f::FIR, u) | |
si = length(f.in) | |
for i =si-1:-1:1 | |
f.in[i+1] = f.in[i] | |
end | |
f.in[1] = u | |
end | |
function compute1{in_t, coef_t}(f::FIR{in_t, coef_t}) | |
s = zero (promote_type (in_t, coef_t)) | |
size = length(f.coef) | |
for i = 1:size | |
s += f.in[i] * f.coef[i] | |
end | |
return s | |
end | |
function shift_compute1(f::FIR, u) | |
shift! (f, u) | |
return compute1 (f) #could replace with dot(f.in, f.coef) | |
end | |
function compute{in_t, coef_t}(f::FIR{in_t, coef_t}, u::Vector) | |
out = similar (u, promote_type (in_t,coef_t)) | |
size = length (u) | |
for i = 1:size | |
out[i] = shift_compute1 (f, u[i]) | |
end | |
return out | |
end | |
c = float ([1:4]) | |
const g = FIR{Float64,Float64} (c) | |
h = FIR{Complex{Float64},Float64} (c) | |
j = float ([1:10]) | |
k = compute (g, j) | |
function timeit() | |
n = 10 | |
l = 1000000 | |
u = zeros(Float64, l) | |
for i=1:n | |
v = compute (g, u) | |
end | |
end | |
end | |
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