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DecayingSample::decay must always return with the time current.

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David Schwartz
2013-10-29 14:46:22 -07:00
parent 4ddadb8792
commit 4eebea91d3
1 changed files with 14 additions and 15 deletions
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29
src/ripple/resource/impl/DecayingSample.h
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@@ -63,25 +63,24 @@ private:
// Apply exponential decay based on the specified time.
void decay (elapsed_type now)
{
if (m_value == value_type())
if (now == m_when)
return;
elapsed_type n (now - m_when);
if (n == 0)
return;
// A span larger than four times the window decays the
// value to an insignificant amount so just reset it.
//
if (n > 4 * Window)
if (m_value != value_type())
{
m_value = value_type();
return;
}
elapsed_type n (now - m_when);
while (n--)
m_value -= (m_value + Window - 1) / Window;
// A span larger than four times the window decays the
// value to an insignificant amount so just reset it.
//
if (n > 4 * Window)
m_value = value_type();
else
{
while (n--)
m_value -= (m_value + Window - 1) / Window;
}
}
m_when = now;
}