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

     1  /*
     2   * Copyright (c) 2017-2018, Arm Limited.
     3   * SPDX-License-Identifier: MIT
     4   */
     5  #ifndef _POWF_DATA_H
     6  #define _POWF_DATA_H
     7  
     8  #include "libm.h"
     9  #include "exp2f_data.h"
    10  
    11  #define POWF_LOG2_TABLE_BITS 4
    12  #define POWF_LOG2_POLY_ORDER 5
    13  #if TOINT_INTRINSICS
    14  #define POWF_SCALE_BITS EXP2F_TABLE_BITS
    15  #else
    16  #define POWF_SCALE_BITS 0
    17  #endif
    18  #define POWF_SCALE ((double)(1 << POWF_SCALE_BITS))
    19  extern hidden const struct powf_log2_data {
    20  	struct {
    21  		double invc, logc;
    22  	} tab[1 << POWF_LOG2_TABLE_BITS];
    23  	double poly[POWF_LOG2_POLY_ORDER];
    24  } __powf_log2_data;
    25  
    26  #endif