normalizeRoundAndPackFloat64
return normalizeRoundAndPackFloat64( roundData, zSign, zExp, zSig );
return normalizeRoundAndPackFloat64( roundData, aSign ^ zSign, bExp, aSig );
return normalizeRoundAndPackFloat64(zSign, zExp, zSig);
static float64 normalizeRoundAndPackFloat64(flag zSign, int16 zExp,