[Home](./index.md) > [type-tls](./type-tls.md) > [BitFlagEqualTestType](./type-tls.bitflagequaltesttype.md) > [getEqualFun](./type-tls.bitflagequaltesttype.getequalfun.md) ## BitFlagEqualTestType.getEqualFun() function 获取 位标志相等测试的函数 **Signature:** ```typescript function getEqualFun(testType?: BitFlagEqualTestType | null): (a: number, b: number) => number | boolean; ``` ## Parameters

Parameter	Type	Description
testType	[BitFlagEqualTestType](./type-tls.bitflagequaltesttype.md) \| null	_(Optional)_ 默认 intersectEqual

**Returns:** (a: number, b: number) => number \| boolean