summaryrefslogtreecommitdiff
path: root/src/math/log2_data.h
blob: 276a786d1424e41eed9e1d529c199de686618b95 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
/*
 * Copyright (c) 2018, Arm Limited.
 * SPDX-License-Identifier: MIT
 */
#ifndef _LOG2_DATA_H
#define _LOG2_DATA_H

#include <features.h>

#define LOG2_TABLE_BITS 6
#define LOG2_POLY_ORDER 7
#define LOG2_POLY1_ORDER 11
extern hidden const struct log2_data {
	double invln2hi;
	double invln2lo;
	double poly[LOG2_POLY_ORDER - 1];
	double poly1[LOG2_POLY1_ORDER - 1];
	struct {
		double invc, logc;
	} tab[1 << LOG2_TABLE_BITS];
#if !__FP_FAST_FMA
	struct {
		double chi, clo;
	} tab2[1 << LOG2_TABLE_BITS];
#endif
} __log2_data;

#endif