ClickHouse/base/common/shift10.h
Ivan 571d0d541c
Improve CCTZ contrib ()
* common/Types.h → common/types.h
  Also split Core/Defines.h and merge with common/likely.h
* Improve cctz contrib
* Fix ALWAYS_INLINE and unbundled build
* Update Dockerfile from master
* Fix test for unbundled library
2020-03-19 13:38:34 +03:00

17 lines
377 B
C++

#pragma once
#include <common/types.h>
/** 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);