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using isapprox(a,b) function in julia instead of rolling our own #612

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Merged
c252 merged 2 commits into from
Jun 14, 2019
Merged

using isapprox(a,b) function in julia instead of rolling our own #612

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1fbb858
using function in julia instead of rolling our own
leios Jun 13, 2019
037819f
fixing typo with iterative and recursive cooley tukey implementations
leios Jun 13, 2019
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18 changes: 6 additions & 12 deletions contents/cooley_tukey/code/julia/fft.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -110,23 +110,17 @@ function butterfly(x)
return y
end

function approx(x, y)
val = true
for i = 1:length(x)
if (abs(x[i]) - abs(y[i]) > 1e-5)
val = false
end
end
println(val)
end

function main()
x = rand(128)
y = cooley_tukey(x)
z = iterative_cooley_tukey(x)
w = fft(x)
approx(y, w)
approx(z, w)
if(isapprox(y, w))
println("Recursive Cooley Tukey matches fft() from FFTW package.")
end
if(isapprox(z, w))
println("Iterative Cooley Tukey matches fft() from FFTW package.")
end
end

main()