mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-23 16:12:01 +00:00
23 lines
524 B
C++
23 lines
524 B
C++
|
/*
|
||
|
|
* Copyright (c) 2018, Arm Limited.
|
||
|
|
* SPDX-License-Identifier: MIT
|
||
|
|
*/
|
||
|
|
#ifndef _POW_DATA_H
|
||
|
|
#define _POW_DATA_H
|
||
|
|
|
||
|
|
#include "musl_features.h"
|
||
|
|
|
||
|
|
#define POW_LOG_TABLE_BITS 7
|
||
|
|
#define POW_LOG_POLY_ORDER 8
|
||
|
|
extern hidden const struct pow_log_data {
|
||
|
|
double ln2hi;
|
||
|
|
double ln2lo;
|
||
|
|
double poly[POW_LOG_POLY_ORDER - 1]; /* First coefficient is 1. */
|
||
|
|
/* Note: the pad field is unused, but allows slightly faster indexing. */
|
||
|
|
struct {
|
||
|
|
double invc, pad, logc, logctail;
|
||
|
|
} tab[1 << POW_LOG_TABLE_BITS];
|
||
|
|
} __pow_log_data;
|
||
|
|
|
||
|
|
#endif
|