Subversion Repositories planix.SVN

#include "os.h"

#include <mp.h>

#include "dat.h"

// convert an mpint into a little endian byte array (least significant byte first)

//   return number of bytes converted

//   if p == nil, allocate and result array

int

mptole(mpint *b, uchar *p, uint n, uchar **pp)

{

	int m;

	m = (mpsignif(b)+7)/8;

	if(m == 0)

		m++;

	if(p == nil){

		n = m;

		p = malloc(n);

		if(p == nil)

			sysfatal("mptole: %r");

		setmalloctag(p, getcallerpc(&b));

	} else if(n < m)

		return -1;

	if(pp != nil)

		*pp = p;

	mptolel(b, p, n);

	return m;

}