text: /*
   * RELIC is an Efficient LIbrary for Cryptography
   * Copyright (C) 2007-2017 RELIC Authors
   *
   * This file is part of RELIC. RELIC is legal property of its developers,
   * whose names are not listed here. Please refer to the COPYRIGHT file
   * for contact information.
   *
   * RELIC is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * RELIC is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with RELIC. If not, see <http://www.gnu.org/licenses/>.
   */
  
  /**
   * @file
   *
   * Implementation of the low-level multiple precision bit shifting functions.
   *
   * @ingroup bn
   */
  
  #include <gmp.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  
  #include <relic_bn.h>
  #include <relic_bn_low.h>
  
  /*============================================================================*/
  /* Public definitions                                                         */
  /*============================================================================*/
  
  dig_t bn_lsh1_low(dig_t *c, const dig_t *a, int size) {
  	return mpn_lshift(c, a, size, 1);
  }
  
  dig_t bn_lshb_low(dig_t *c, const dig_t *a, int size, int bits) {
  	return mpn_lshift(c, a, size, bits);
  }
  
  void bn_lshd_low(dig_t *c, const dig_t *a, int size, int digits) {
  	dig_t *top;
  	const dig_t *bot;
  	int i;
  
  	top = c + size + digits - 1;
  	bot = a + size - 1;
  
  	for (i = 0; i < size; i++, top--, bot--) {
  		*top = *bot;
  	}
  	for (i = 0; i < digits; i++, c++) {
  		*c = 0;
  	}
  }
  
  dig_t bn_rsh1_low(dig_t *c, const dig_t *a, int size) {
  	return mpn_rshift(c, a, size, 1);
  }
  
  dig_t bn_rshb_low(dig_t *c, const dig_t *a, int size, int bits) {
  	return mpn_rshift(c, a, size, bits);
  }
  
  void bn_rshd_low(dig_t *c, const dig_t *a, int size, int digits) {
  	const dig_t *top;
  	dig_t *bot;
  	int i;
  
  	top = a + digits;
  	bot = c;
  
  	for (i = 0; i < size - digits; i++, top++, bot++) {
  		*bot = *top;
  	}
  }
  