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DATV demod: leandvb: fixed possible int to float conversion issues in computation

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This commit is contained in:
f4exb 2019-07-17 16:10:57 +02:00
parent f2e236d401
commit c27da569d5
2 changed files with 2 additions and 2 deletions
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2
plugins/channelrx/demoddatv/leansdr/dsp.h
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@ -327,7 +327,7 @@ struct fir_filter : runnable
{ {
for (int i = 0; i < ncoeffs; ++i) for (int i = 0; i < ncoeffs; ++i)
{ {
float a = 2 * M_PI * f * (i - ncoeffs / 2); float a = 2 * M_PI * f * (i - ncoeffs / 2.0);
float c = cosf(a), s = sinf(a); float c = cosf(a), s = sinf(a);
// TBD Support T=complex // TBD Support T=complex
shifted_coeffs[i].re = coeffs[i] * c; shifted_coeffs[i].re = coeffs[i] * c;

2
plugins/channelrx/demoddatv/leansdr/sdr.h
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@ -743,7 +743,7 @@ struct cstln_lut : cstln_base
{ // Average power in first quadrant with unit grid { // Average power in first quadrant with unit grid
int q = m / 2; int q = m / 2;
float avgpower = 2 * (q * 0.25 + (q - 1) * q / 2 + (q - 1) * q * (2 * q - 1) / 6) / q; float avgpower = 2 * (q * 0.25 + (q - 1) * q / 2.0 + (q - 1) * q * (2 * q - 1) / 6.0) / q;
scale = 1.0 / sqrtf(avgpower); scale = 1.0 / sqrtf(avgpower);
} }
// Arbitrary mapping // Arbitrary mapping