log_data.h raw

   1  /*
   2   * Copyright (c) 2018, Arm Limited.
   3   * SPDX-License-Identifier: MIT
   4   */
   5  #ifndef _LOG_DATA_H
   6  #define _LOG_DATA_H
   7  
   8  #include <features.h>
   9  
  10  #define LOG_TABLE_BITS 7
  11  #define LOG_POLY_ORDER 6
  12  #define LOG_POLY1_ORDER 12
  13  extern hidden const struct log_data {
  14  	double ln2hi;
  15  	double ln2lo;
  16  	double poly[LOG_POLY_ORDER - 1]; /* First coefficient is 1.  */
  17  	double poly1[LOG_POLY1_ORDER - 1];
  18  	struct {
  19  		double invc, logc;
  20  	} tab[1 << LOG_TABLE_BITS];
  21  #if !__FP_FAST_FMA
  22  	struct {
  23  		double chi, clo;
  24  	} tab2[1 << LOG_TABLE_BITS];
  25  #endif
  26  } __log_data;
  27  
  28  #endif
  29