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#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <strings.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "mpfr.h"
#include "assert.h"
int
#if __STDC__
mpfr_extract(mpz_ptr y, mpfr_srcptr p, int i)
#else
mpfr_extract(y,p,i)
mpz_ptr y;
mpfr_srcptr p;
int i;
#endif
{
int two_i=1 << i;
int two_i_2 = i ? two_i / 2 : 1;
int size;
int j;
if (MPFR_ABSSIZE(p) < two_i){
int j;
y->_mp_alloc=two_i_2 ;
y->_mp_size=two_i_2 ;
PTR(y) = (*_mp_allocate_func)(two_i_2 * sizeof(mp_limb_t));
MPN_ZERO (PTR(y), two_i_2);
assert(y->_mp_d!=NULL);
for(j= 0; j < MPFR_ABSSIZE(p) - two_i_2 ; j++){
y->_mp_d[j + two_i - MPFR_ABSSIZE(p)] = p->_mp_d[j];
}
} else
{
PTR(y) = (*_mp_allocate_func)(two_i_2 * sizeof(mp_limb_t));
memcpy(y -> _mp_d, p->_mp_d+MPFR_ABSSIZE(p) - two_i, two_i_2 * sizeof(mp_limb_t));
y->_mp_alloc=two_i_2 ;
y->_mp_size=two_i_2 ;
}
size = MPFR_ABSSIZE(y);
for (j = 0; j < size; j++)
{
if (y->_mp_d[j])
{
if MPFR_ISNEG(p)
mpz_neg(y,y);
return 0;
}
}
y->_mp_size=0;
return 0;
}
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