ClickHouse/src/Common/interpolate.h
2020-04-03 18:14:31 +03:00

21 lines
540 B
C++

#pragma once
#include <cmath>
inline double interpolateLinear(double min, double max, double ratio)
{
return min + (max - min) * ratio;
}
/** It is linear interpolation in logarithmic coordinates.
* Exponential interpolation is related to linear interpolation
* exactly in same way as geometric mean is related to arithmetic mean.
* 'min' must be greater than zero, 'ratio' must be from 0 to 1.
*/
inline double interpolateExponential(double min, double max, double ratio)
{
return min * std::pow(max / min, ratio);
}