UKismetMathLibrary::And_Int64Int64

function Engine Blueprint Since unknown

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Performs a bitwise AND on A and B and returns the result. Commonly used to test or isolate individual bits in a 64-bit flags field.

Caveats & Gotchas

• Bitwise AND on a signed int64 preserves the sign bit — masking with a value that has bit 63 set can turn a positive number negative. Use uint64 casts in C++ when dealing with unsigned bit fields to avoid signed/unsigned confusion.
• Blueprint does not expose uint64 natively, so unsigned bit-field semantics are unavailable from Blueprint; be especially careful with masks that touch the high 32 bits.

Signature

static UE_INL_API int64 And_Int64Int64(int64 A, int64 B);

Parameters

Name	Type	Description	Default
A	int64	First operand.	—
B	int64	Second operand (typically a bitmask).	—

Return Type

int64

Example

Test whether a specific permission flag is set C++

const int64 WriteFlag = (1LL << 3);
int64 Permissions = GetPermissions();
bool bCanWrite = UKismetMathLibrary::And_Int64Int64(Permissions, WriteFlag) != 0;

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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