mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-15 02:41:59 +00:00
27 lines
545 B
C++
27 lines
545 B
C++
|
/*
|
||
|
* Copyright (c) 2018, Arm Limited.
|
||
|
* SPDX-License-Identifier: MIT
|
||
|
*/
|
||
|
#ifndef _EXP_DATA_H
|
||
|
#define _EXP_DATA_H
|
||
|
|
||
|
#include "musl_features.h"
|
||
|
#include <stdint.h>
|
||
|
|
||
|
#define EXP_TABLE_BITS 7
|
||
|
#define EXP_POLY_ORDER 5
|
||
|
#define EXP_USE_TOINT_NARROW 0
|
||
|
#define EXP2_POLY_ORDER 5
|
||
|
extern hidden const struct exp_data {
|
||
|
double invln2N;
|
||
|
double shift;
|
||
|
double negln2hiN;
|
||
|
double negln2loN;
|
||
|
double poly[4]; /* Last four coefficients. */
|
||
|
double exp2_shift;
|
||
|
double exp2_poly[EXP2_POLY_ORDER];
|
||
|
uint64_t tab[2*(1 << EXP_TABLE_BITS)];
|
||
|
} __exp_data;
|
||
|
|
||
|
#endif
|