ossp-pkg/ui64/ui64.h
1.1
/*
** OSSP ui64 - 64-Bit Arithmetic
** Copyright (c) 2002 Ralf S. Engelschall <rse@engelschall.com>
** Copyright (c) 2002 The OSSP Project <http://www.ossp.org/>
** Copyright (c) 2002 Cable & Wireless Deutschland <http://www.cw.com/de/>
**
** This file is part of OSSP ui64, a 64-bit arithmetic library
** which can be found at http://www.ossp.org/pkg/lib/ui64/.
**
** Permission to use, copy, modify, and distribute this software for
** any purpose with or without fee is hereby granted, provided that
** the above copyright notice and this permission notice appear in all
** copies.
**
** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
**
** ui64.h: API declaration
*/
#ifndef __UI64_H__
#define __UI64_H__
#include <string.h>
typedef struct {
unsigned char x[8]; /* x_0, ..., x_7 */
} ui64_t;
/* minimum/maximum values */
extern ui64_t ui64_zero (void);
extern ui64_t ui64_max (void);
/* import and export via ISO-C "unsigned long" */
extern ui64_t ui64_n2i (unsigned long n);
extern unsigned long ui64_i2n (ui64_t x);
/* import and export via ISO-C string of arbitrary base */
extern ui64_t ui64_s2i (const char *str, char **end, int base);
extern char * ui64_i2s (ui64_t x, char *str, size_t len, int base);
/* arithmetical operations */
extern ui64_t ui64_add (ui64_t x, ui64_t y, ui64_t *ov);
extern ui64_t ui64_addn (ui64_t x, int y, int *ov);
extern ui64_t ui64_sub (ui64_t x, ui64_t y, ui64_t *ov);
extern ui64_t ui64_subn (ui64_t x, int y, int *ov);
extern ui64_t ui64_mul (ui64_t x, ui64_t y, ui64_t *ov);
extern ui64_t ui64_muln (ui64_t x, int y, int *ov);
extern ui64_t ui64_div (ui64_t x, ui64_t y, ui64_t *ov);
extern ui64_t ui64_divn (ui64_t x, int y, int *ov);
/* bit operations */
extern ui64_t ui64_and (ui64_t x, ui64_t y);
extern ui64_t ui64_or (ui64_t x, ui64_t y);
extern ui64_t ui64_xor (ui64_t x, ui64_t y);
extern ui64_t ui64_not (ui64_t x);
extern ui64_t ui64_rol (ui64_t x, int s, ui64_t *ov);
extern ui64_t ui64_ror (ui64_t x, int s, ui64_t *ov);
/* other operations */
extern int ui64_len (ui64_t x);
extern int ui64_cmp (ui64_t x, ui64_t y);
#endif /* __UI64_H__ */
