19/01/27 11:17:31.03 /cT7Kgd3.net
>>923
> return (abac * abad < 0 && cdca * cdcb < 0);
return (abac * abad <= 0 && cdca * cdcb <= 0);
端点も含まんとあかんのとちゃう？
19/01/27 11:17:31.03 /cT7Kgd3.net
>>923
> return (abac * abad < 0 && cdca * cdcb < 0);
return (abac * abad <= 0 && cdca * cdcb <= 0);
端点も含まんとあかんのとちゃう？