avr/bcd.c

   1 /*
   2  * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include "stdlib.h"
   8 #include "stdint.h"
   9 #include "bcd.h"
  10
  11 uint_fast8_t bcd2bin(uint8_t val)
  12 {
  13         return (val >> 4) * 10 + (val & 0x0f);
  14 }
  15
  16 uint8_t bin2bcd (uint_fast8_t val)
  17 {
  18         div_t d = div(val, 10);
  19
  20         return (d.quot << 4) | d.rem;
  21 }