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37 lines
738 B
37 lines
738 B
#pragma once
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#include <cmath>
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namespace wvlt {
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// first row of the matrix Wn
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static double const evn_coef[] = {
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(1.0 + std::sqrt(3.0))/(std::sqrt(32.0)),
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(3.0 + std::sqrt(3.0))/(std::sqrt(32.0)),
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(3.0 - std::sqrt(3.0))/(std::sqrt(32.0)),
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(1.0 - std::sqrt(3.0))/(std::sqrt(32.0))
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};
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// second row of the matrix Wn
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static double const odd_coef[] = {
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evn_coef[3],
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-evn_coef[2],
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evn_coef[1],
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-evn_coef[0]
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};
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// first (shifted) row of the matrix Wn^-1
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static double const evn_coef_inv[] = {
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evn_coef[2],
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evn_coef[1],
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evn_coef[0],
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evn_coef[3]
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};
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// second (shifted) row of the matrix Wn^-1
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static double const odd_coef_inv[] = {
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evn_coef[3],
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-evn_coef[0],
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evn_coef[1],
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-evn_coef[2]
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};
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}
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