1 /*
2  * Copyright (c) 2018, Arm Limited.
3  * SPDX-License-Identifier: MIT
4  */
5 #ifndef _POW_DATA_H
6 #define _POW_DATA_H
7 
8 #include <features.h>
9 
10 #define POW_LOG_TABLE_BITS 7
11 #define POW_LOG_POLY_ORDER 8
12 extern hidden const struct pow_log_data {
13 	double ln2hi;
14 	double ln2lo;
15 	double poly[POW_LOG_POLY_ORDER - 1]; /* First coefficient is 1.  */
16 	/* Note: the pad field is unused, but allows slightly faster indexing.  */
17 	struct {
18 		double invc, pad, logc, logctail;
19 	} tab[1 << POW_LOG_TABLE_BITS];
20 } __pow_log_data;
21 
22 #endif
23