ClickHouse/base/common/shift10.h

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2018-01-13 18:01:31 +00:00
#pragma once
#include <common/types.h>
2018-01-13 18:01:31 +00:00
/** Almost the same as x = x * exp10(exponent), but gives more accurate result.
* Example:
* 5 * 1e-11 = 4.9999999999999995e-11
* !=
* 5e-11 = shift10(5.0, -11)
*/
double shift10(double x, int exponent);
float shift10(float x, int exponent);
double shift10(UInt64 x, int exponent);
double shift10(Int64 x, int exponent);