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Prevent divide by 0 in calc_mean

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sukibaby
2024-08-07 00:56:16 -07:00
committed by teejusb
parent 3c64940974
commit 5e00535522
1 changed files with 4 additions and 0 deletions
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src/RageUtil.cpp
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@@ -1195,6 +1195,10 @@ float calc_mean(const float* pStart, const float* pEnd)
/* The Kahan summation algorithm is used here to prevent /* The Kahan summation algorithm is used here to prevent
* situations where the low order bits may be lost. * situations where the low order bits may be lost.
* https://en.wikipedia.org/wiki/Kahan_summation_algorithm */ * https://en.wikipedia.org/wiki/Kahan_summation_algorithm */
if (pStart == pEnd)
return 0.0f;
float sum = 0.0f; float sum = 0.0f;
float c = 0.0f; float c = 0.0f;
for (const float* p = pStart; p != pEnd; ++p) for (const float* p = pStart; p != pEnd; ++p)