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/*
* Arbitrary precision integer math package
*
* (c) Copyright 1991 by David A. Barrett (barrett@asgard.UUCP)
*
* Not to be used for profit or distributed in systems sold for profit
*/
/* BEGIN EDB */
#include <stdlib.h>
#if defined(USE_LOCH) && defined(_WIN32)
#pragma comment(lib, "loch.lib")
#endif
#define NOMEMOPT 1
/* END EDB */
#ifndef BASE
typedef unsigned short prefc; /* reference counter type */
typedef prefc *precision; /* this a a private data structure */
extern int pfree(); /* free (private) */
#endif
typedef precision *pvector; /* a vector of precision */
typedef pvector *parray; /* 2d array */
/*
* Error values passed to errorp
*/
#define PNOERROR 0
#define PNOMEM 1
#define PREFCOUNT 2
#define PUNDEFINED 3
#define PDOMAIN 4
#define POVERFLOW 5
#define pUndef ((precision) 0) /* An undefined value */
#define pNull ((precision *) 0)
#define peq(u, v) (pcmp((u), (v)) == 0)
#define pne(u, v) (pcmp((u), (v)) != 0)
#define pgt(u, v) (pcmp((u), (v)) > 0)
#define plt(u, v) (pcmp((u), (v)) < 0)
#define pge(u, v) (pcmp((u), (v)) >= 0)
#define ple(u, v) (pcmp((u), (v)) <= 0)
#define peqz(u) (pcmpz(u) == 0)
#define pnez(u) (pcmpz(u) != 0)
#define pltz(u) (pcmpz(u) < 0)
#define pgtz(u) (pcmpz(u) > 0)
#define plez(u) (pcmpz(u) <= 0)
#define pgez(u) (pcmpz(u) >= 0)
#define peven(u) (!podd(u))
#define pdiv(u,v) (pdivmod(u,v, (precision *) -1, pNull))
#define pmod(u,v) (pdivmod(u,v, pNull, (precision *) -1))
#define pdivr(u,v,r) (pdivmod(u,v, (precision *) -1, r))
#define pmodq(u,v,q) (pdivmod(u,v, q, (precision *) -1))
/*
* Application programs should only use the following definitions;
*
* pnew, pdestroy, pparm, presult and pset
*
* Other variants are internal only!
* All are side-effect safe except for pparm and presult.
* -DDEBUG will enable argument checking for pset and pparm
*/
#ifdef __GNUC__ /* inline is NOT ansii! Sigh. */
#ifndef BWGC
static inline precision pnew(precision u) { (* (prefc *) u)++; return u; }
static inline void pdestroy(precision u) {
if (u != pUndef && --(*(prefc *) u) == 0) pfree(u);
}
static inline precision pparmq(precision u) {
if (u != pUndef) (* (prefc *) u)++; return u;
}
static inline precision presult(precision u) {
if (u != pUndef) --(*(prefc *) u); return u;
}
static inline precision psetq(precision *up, precision v) {
precision u = *up;
*up = v;
if (v != pUndef) (* (prefc *) v)++;
if (u != pUndef && --(* (prefc *) u) == 0) pfree(u);
return v;
}
#define pvoid(u) pdestroy(u)
#else
extern inline precision pnew(precision u) { return u; }
extern inline void pdestroy(precision u) {}
extern inline precision pparmq(precision u) { return u; }
extern inline precision presult(precision u) { return u; }
extern inline precision psetq(precision *up, precision v) {
precision u = *up;
*up = v;
return v;
}
#define pvoid(u) pdestroy(u)
#endif
#else
#ifndef BWGC
#define pdestroy(u) (void) ((u)!=pUndef&&--(*(prefc *)(u))==0&&pfree(u))
#define pparmq(u) ((u) != pUndef && (* (prefc *) (u))++, (u))
#define pvoid(u) pdestroyf(u)
#else
#define pdestroy(u) (void) (0)
#define pparmq(u) (u)
#define pvoid(u) pdestroyf(u)
#endif
#endif
#ifdef PDEBUG
#define pset(u, v) psetv(u, v)
#define pparm(u) pparmv(u)
#else
#define pset(u, v) psetq(u, v)
#define pparm(u) pparmq(u)
#endif
#ifdef __STDC__ /* if ANSI compiler */
#ifndef __GNUC__
extern precision pnew(precision); /* initialization */
extern precision presult(precision); /* function result */
extern precision psetq(precision *, precision); /* quick assignment */
#endif
extern precision psetv(precision *, precision); /* checked assignment */
extern precision pparmv(precision); /* checked parameter */
extern precision pparmf(precision); /* unchecked parameter (fn) */
extern int pcmpz(precision); /* compare to zero */
extern int pcmp(precision, precision); /* compare */
extern int picmp(precision, int); /* single digit cmp */
extern precision padd(precision, precision); /* add */
extern precision psub(precision, precision); /* subtract */
extern precision pmul(precision, precision); /* multiply */
extern precision pdivmod(precision, precision,
precision *q, precision *r);
extern precision pidiv(precision, int); /* single digit pdiv */
extern int pimod(precision, int); /* single digit pmod */
extern void pidivmod(precision, int, /* single pdivmod */
precision *q, int *r);
extern precision pneg(precision); /* negate */
extern precision pabs(precision); /* absolute value */
extern int podd(precision); /* true if odd */
extern precision phalf(precision); /* divide by two */
extern precision pmin(precision, precision); /* minimum value */
extern precision pmax(precision, precision); /* maximum value */
extern precision prand(precision); /* random number generator */
extern precision itop(int); /* int to precision */
extern precision utop(unsigned); /* unsigned to precision */
extern precision ltop(long); /* long to precision */
extern precision ultop(unsigned long); /* unsigned long to precision */
extern int ptoi(precision); /* precision to int */
extern unsigned int ptou(precision); /* precision to unsigned */
extern long ptol(precision); /* precision to long */
extern unsigned long ptoul(precision); /* precision to unsigned long */
extern precision atop(char *); /* ascii to precision */
extern char *ptoa(precision); /* precision to ascii */
extern int btop(precision *result, /* base to precision */
char *src, unsigned size, int *digitmap, unsigned radix);
extern int /* precision to base */
ptob(precision, char *result, unsigned size, char *alphabet, unsigned radix);
/*
* Can't do prototyping for these unless stdio.h has been included
*/
#ifdef BUFSIZ
extern precision fgetp(FILE *stream); /* input precision */
extern int fputp(FILE *stream, precision); /* output precision */
extern int
fprintp(FILE *stream, precision, int minWidth); /* output within a field */
#else
extern precision fgetp(); /* input precision */
extern int fputp(); /* output precision */
extern int fprintp(); /* output within a field */
#endif
extern int putp(precision); /* stdout with '\n' */
extern void pshow(precision); /* display debug info */
extern precision prandnum(); /* debug and profil only */
extern precision pshift(precision, int); /* shift left */
extern precision errorp(int errnum, char *routine, char *message);
extern precision pzero, pone, ptwo; /* constants 0, 1, and 2 */
extern precision p_one; /* constant -1 */
extern precision psqrt(precision); /* square root */
extern precision pfactorial(precision); /* factorial */
extern precision pipow(precision, unsigned); /* unsigned int power */
extern precision ppow(precision, precision); /* precision power */
extern precision
ppowmod(precision, precision, precision); /* precision power mod m */
extern int plogb(precision, precision); /* log base b of n */
extern precision dtop(double); /* double to precision */
extern double ptod(precision); /* precision to double */
/*
* vector operations
*/
pvector pvundef(pvector, unsigned size); /* local variable entry */
void pvdestroy(pvector, unsigned size); /* local variable exit */
pvector pvalloc(unsigned size); /* pvec allocate */
void pvfree(pvector, unsigned size); /* pvec free */
pvector pvset(pvector, unsigned size, precision value);
#else
/*
* Function versions of above if you still want side effects
*/
#ifndef __GNUC__
extern precision pnew(); /* initialization */
extern precision presult(); /* function result */
extern precision psetq(); /* quick assignment */
#endif
extern precision psetv(); /* checked assignment */
extern precision pparmv(); /* checked parameter */
extern precision pparmf(); /* unchecked parameter (fn) */
extern int pcmpz(); /* compare to zero */
extern int pcmp(); /* compare */
extern int picmp(); /* single digit compare */
extern precision padd(); /* add */
extern precision psub(); /* subtract */
extern precision pmul(); /* multiply */
extern precision pdivmod(); /* divide/remainder */
extern void pidivmod(); /* single digit divide/remainder */
extern precision pidiv(); /* single digit divide */
extern int pimod(); /* single digit remainder */
extern precision pneg(); /* negate */
extern precision pabs(); /* absolute value */
extern int podd(); /* true if odd */
extern precision phalf(); /* divide by two */
extern precision pmin(); /* minimum value */
extern precision pmax(); /* maximum value */
extern precision prand(); /* random number generator */
extern precision itop(); /* int to precision */
extern precision utop(); /* unsigned to precision */
extern precision ltop(); /* long to precision */
extern precision ultop(); /* unsigned long to precision */
extern int ptoi(); /* precision to int */
extern unsigned int ptou(); /* precision to unsigned */
extern long ptol(); /* precision to long */
extern unsigned long ptoul(); /* precision to unsigned long */
extern precision atop(); /* ascii to precision */
extern char *ptoa(); /* precision to ascii */
extern int btop(); /* base to precision */
extern int ptob(); /* precision to base */
extern precision fgetp(); /* input a precision */
extern int fputp(); /* output a precision */
extern int putp(); /* output precision '\n' to stdout */
extern int fprintp(); /* output a precision within a field */
extern void pshow(); /* display debug info */
extern precision prandnum(); /* for debug and profil only */
extern precision pshift(); /* shift left */
extern precision errorp(); /* user-substitutable error handler */
extern precision pzero, pone, ptwo; /* constants 0, 1, and 2 */
extern precision p_one; /* constant -1 */
extern precision psqrt(); /* square root */
extern precision pfactorial(); /* factorial */
extern precision pipow(); /* unsigned int power */
extern precision ppow(); /* precision power */
extern precision ppowmod(); /* precision power mod m */
extern int plogb(); /* log base b of n */
extern precision dtop(); /* double to precision */
extern double ptod(); /* precision to double */
/*
* vector operations
*/
pvector pvundef(); /* local variable entry */
void pvdestroy(); /* local variable exit */
pvector pvalloc(); /* pvec allocate */
void pvfree(); /* pvec free */
pvector pvset(); /* set each element to scaler */
#endif
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