mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-11 17:02:25 +00:00
27 lines
555 B
C++
27 lines
555 B
C++
/*
|
|
* Copyright (c) 2017-2018, Arm Limited.
|
|
* SPDX-License-Identifier: MIT
|
|
*/
|
|
#ifndef _POWF_DATA_H
|
|
#define _POWF_DATA_H
|
|
|
|
#include "libm.h"
|
|
#include "exp2f_data.h"
|
|
|
|
#define POWF_LOG2_TABLE_BITS 4
|
|
#define POWF_LOG2_POLY_ORDER 5
|
|
#if TOINT_INTRINSICS
|
|
#define POWF_SCALE_BITS EXP2F_TABLE_BITS
|
|
#else
|
|
#define POWF_SCALE_BITS 0
|
|
#endif
|
|
#define POWF_SCALE ((double)(1 << POWF_SCALE_BITS))
|
|
extern hidden const struct powf_log2_data {
|
|
struct {
|
|
double invc, logc;
|
|
} tab[1 << POWF_LOG2_TABLE_BITS];
|
|
double poly[POWF_LOG2_POLY_ORDER];
|
|
} __powf_log2_data;
|
|
|
|
#endif
|