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26 7u83 1 
#include "os.h"
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#include <mp.h>
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#include "dat.h"
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void
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mptober(mpint *b, uchar *p, int n)
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{
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	int i, j, m;
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	mpdigit x;
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	memset(p, 0, n);
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	p += n;
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	m = b->top*Dbytes;
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	if(m < n)
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		n = m;
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	i = 0;
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	while(n >= Dbytes){
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		n -= Dbytes;
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		x = b->p[i++];
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		for(j = 0; j < Dbytes; j++){
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			*--p = x;
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			x >>= 8;
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		}
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	}
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	if(n > 0){
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		x = b->p[i];
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		for(j = 0; j < n; j++){
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			*--p = x;
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			x >>= 8;
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		}
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	}
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}