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#include "os.h"
#include <mp.h>
#include "dat.h"
/*
* this code assumes that mpdigit is at least as
* big as an int.
*/
mpint*
itomp(int i, mpint *b)
{
if(b == nil){
b = mpnew(0);
setmalloctag(b, getcallerpc(&i));
}
b->sign = (i >> (sizeof(i)*8 - 1)) | 1;
i *= b->sign;
*b->p = i;
b->top = 1;
return mpnorm(b);
}
int
mptoi(mpint *b)
{
uint x;
if(b->top==0)
return 0;
x = *b->p;
if(b->sign > 0){
if(b->top > 1 || (x > MAXINT))
x = (int)MAXINT;
else
x = (int)x;
} else {
if(b->top > 1 || x > MAXINT+1)
x = (int)MININT;
else
x = -(int)x;
}
return x;
}
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