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fix double to float conversion #21

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fix double to float conversion #21

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6 changes: 3 additions & 3 deletions butteraugli/butteraugli.h
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Original file line number Diff line number Diff line change
Expand Up @@ -518,7 +518,7 @@ struct RationalPolynomial {
}

// Evaluates the polynomial at x (in [min_value, max_value]).
inline double operator()(const float x) const {
inline double operator()(const double x) const {
// First normalize to [0, 1].
const double x01 = (x - min_value) / (max_value - min_value);
// And then to [-1, 1] domain of Chebyshev polynomials.
Expand All @@ -527,7 +527,7 @@ struct RationalPolynomial {
const double yp = EvaluatePolynomial(xc, p);
const double yq = EvaluatePolynomial(xc, q);
if (yq == 0.0) return 0.0;
return static_cast<float>(yp / yq);
return yp / yq;
}

// Domain of the polynomials; they are undefined elsewhere.
Expand All @@ -540,7 +540,7 @@ struct RationalPolynomial {
double q[5 + 1];
};

static inline float GammaPolynomial(float value) {
static inline double GammaPolynomial(double value) {
// Generated by gamma_polynomial.m from equispaced x/gamma(x) samples.
static const RationalPolynomial r = {
0.770000000000000, 274.579999999999984,
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