src/math/powf_data.h

   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