src/math/logf_data.h

   1 /*
   2  * Copyright (c) 2017-2018, Arm Limited.
   3  * SPDX-License-Identifier: MIT
   4  */
   5 #ifndef _LOGF_DATA_H
   6 #define _LOGF_DATA_H
   7
   8 #include <features.h>
   9
  10 #define LOGF_TABLE_BITS 4
  11 #define LOGF_POLY_ORDER 4
  12 extern hidden const struct logf_data {
  13         struct {
  14                 double invc, logc;
  15         } tab[1 << LOGF_TABLE_BITS];
  16         double ln2;
  17         double poly[LOGF_POLY_ORDER - 1]; /* First order coefficient is 1.  */
  18 } __logf_data;
  19
  20 #endif