github.com/afumu/libc@v0.0.6/musl/src/math/log_data.h (about)

     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