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WebSVN – planix.SVN – Blame – /os/branches/feature_tlsv12/sys/src/cmd/unix/drawterm/libmp/mptoui.c – Rev 2

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#include "os.h"
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#include <mp.h>
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#include "dat.h"
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/*
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 *  this code assumes that mpdigit is at least as
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 *  big as an int.
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 */
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mpint*
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uitomp(uint i, mpint *b)
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{
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	if(b == nil)
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		b = mpnew(0);
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	mpassign(mpzero, b);
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	if(i != 0)
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		b->top = 1;
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	*b->p = i;
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	return b;
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}
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uint
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mptoui(mpint *b)
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{
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	uint x;
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	x = *b->p;
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	if(b->sign < 0){
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		x = 0;
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	} else {
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		if(b->top > 1 || x > MAXUINT)
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			x =  MAXUINT;
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	}
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	return x;
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}