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WebSVN – planix.SVN – Blame – /os/branches/feature-vt/sys/src/libmp/port/mpcmp.c – Rev 33

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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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// return neg, 0, pos as abs(b1)-abs(b2) is neg, 0, pos
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int
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mpmagcmp(mpint *b1, mpint *b2)
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{
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	int i;
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	i = b1->flags | b2->flags;
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	if(i & MPtimesafe)
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		return mpvectscmp(b1->p, b1->top, b2->p, b2->top);
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	if(i & MPnorm){
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		i = b1->top - b2->top;
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		if(i)
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			return i;
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	}
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	return mpveccmp(b1->p, b1->top, b2->p, b2->top);
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}
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// return neg, 0, pos as b1-b2 is neg, 0, pos
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int
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mpcmp(mpint *b1, mpint *b2)
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{
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	int sign;
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	sign = (b1->sign - b2->sign) >> 1;	// -1, 0, 1
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	return sign | (sign&1)-1 & mpmagcmp(b1, b2)*b1->sign;
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}