#include "os.h"#include <mp.h>#include "dat.h" #define VLDIGITS (sizeof(vlong)/sizeof(mpdigit)) /* *  this code assumes that a vlong is an integral number of *  mpdigits long. */mpint*vtomp(vlong v, mpint *b){	int s;	uvlong uv; 	if(b == nil){		b = mpnew(VLDIGITS*Dbits);		setmalloctag(b, getcallerpc(&v));	}else		mpbits(b, VLDIGITS*Dbits);	b->sign = (v >> (sizeof(v)*8 - 1)) | 1;	uv = v * b->sign;	for(s = 0; s < VLDIGITS; s++){		b->p[s] = uv;		uv >>= sizeof(mpdigit)*8;	}	b->top = s;	return mpnorm(b);} vlongmptov(mpint *b){	uvlong v;	int s; 	if(b->top == 0)		return 0LL; 	if(b->top > VLDIGITS){		if(b->sign > 0)			return (vlong)MAXVLONG;		else			return (vlong)MINVLONG;	} 	v = 0ULL;	for(s = 0; s < b->top; s++)		v |= (uvlong)b->p[s]<<(s*sizeof(mpdigit)*8); 	if(b->sign > 0){		if(v > MAXVLONG)			v = MAXVLONG;	} else {		if(v > MINVLONG)			v = MINVLONG;		else			v = -(vlong)v;	} 	return (vlong)v;}