xp.h

c接口与实现的源码

/* $Id: H:/drh/idioms/book/RCS/xp.doc,v 1.10 1996/06/26 23:02:01 drh Exp $ */
#ifndef XP_INCLUDED
#define XP_INCLUDED
#define T XP_T
typedef unsigned char *T;
extern int XP_add(int n, T z, T x, T y, int carry);
extern int XP_sub(int n, T z, T x, T y, int borrow);
extern int XP_mul(T z, int n, T x, int m, T y);
extern int XP_div(int n, T q, T x, int m, T y, T r,T tmp);
extern int XP_sum     (int n, T z, T x, int y);
extern int XP_diff    (int n, T z, T x, int y);
extern int XP_product (int n, T z, T x, int y);
extern int XP_quotient(int n, T z, T x, int y);
extern int XP_neg(int n, T z, T x, int carry);
extern int XP_cmp(int n, T x, T y);
extern void XP_lshift(int n, T z, int m, T x,
	int s, int fill);
extern void XP_rshift(int n, T z, int m, T x,
	int s, int fill);
extern int           XP_length (int n, T x);
extern unsigned long XP_fromint(int n, T z,
	unsigned long u);
extern unsigned long XP_toint  (int n, T x);
extern int   XP_fromstr(int n, T z, const char *str,
	int base, char **end);
extern char *XP_tostr  (char *str, int size, int base,
	int n, T x);
#undef T
#endif