src/math/exp_data.h

   1 /*
   2  * Copyright (c) 2018, Arm Limited.
   3  * SPDX-License-Identifier: MIT
   4  */
   5 #ifndef _EXP_DATA_H
   6 #define _EXP_DATA_H
   7
   8 #include <features.h>
   9 #include <stdint.h>
  10
  11 #define EXP_TABLE_BITS 7
  12 #define EXP_POLY_ORDER 5
  13 #define EXP_USE_TOINT_NARROW 0
  14 #define EXP2_POLY_ORDER 5
  15 extern hidden const struct exp_data {
  16         double invln2N;
  17         double shift;
  18         double negln2hiN;
  19         double negln2loN;
  20         double poly[4]; /* Last four coefficients.  */
  21         double exp2_shift;
  22         double exp2_poly[EXP2_POLY_ORDER];
  23         uint64_t tab[2*(1 << EXP_TABLE_BITS)];
  24 } __exp_data;
  25
  26 #endif