计算两个整数区间是否重叠的算法函数

//计算两个整数区间是否重叠
typedef struct
{
int a,b;
}Interval;

BOOL CheckIntersect(Interval IntervalA,Interval IntervalB)
{
int a=IntervalA.a-IntervalB.a;
int b=IntervalA.a-IntervalB.b;
int c=IntervalA.b-IntervalB.a;
int d=IntervalA.b-IntervalB.b;

return (a==0 || b==0 || c==0 || d==0 || (a^b)>>31 || (b^c)>>31 || (c^d)>>31);
}