include/linux/polynomial.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2020 BAIKAL ELECTRONICS, JSC
   4  */
   5
   6 #ifndef _POLYNOMIAL_H
   7 #define _POLYNOMIAL_H
   8
   9 /*
  10  * struct polynomial_term - one term descriptor of a polynomial
  11  * @deg: degree of the term.
  12  * @coef: multiplication factor of the term.
  13  * @divider: distributed divider per each degree.
  14  * @divider_leftover: divider leftover, which couldn't be redistributed.
  15  */
  16 struct polynomial_term {
  17         unsigned int deg;
  18         long coef;
  19         long divider;
  20         long divider_leftover;
  21 };
  22
  23 /*
  24  * struct polynomial - a polynomial descriptor
  25  * @total_divider: total data divider.
  26  * @terms: polynomial terms, last term must have degree of 0
  27  */
  28 struct polynomial {
  29         long total_divider;
  30         struct polynomial_term terms[];
  31 };
  32
  33 long polynomial_calc(const struct polynomial *poly, long data);
  34
  35 #endif