UKismetMathLibrary::FCeil64
#include "Kismet/KismetMathLibrary.h"
Access: public
Specifiers: staticBlueprintPureUFUNCTION
Description
Rounds A up towards positive infinity and returns an int64. The int64 version of FCeil, safe for large floating-point values.
Caveats & Gotchas
- • Returns int64 but the double input has only 53-bit integer mantissa. Precision is lost for values beyond ~9 quadrillion, meaning the ceil result may be unexpected.
- • Blueprint labels this 'Ceil to Integer64'. Do not use the int32 FCeil node when the result needs to exceed 2 billion — silent overflow will occur.
Signature
static UE_INL_API int64 FCeil64(double A);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| A | double | The floating-point value to ceil. | — |
Return Type
int64 Example
Calculate minimum pages needed for a large record count C++
double RecordCount = 5000000000.0;
double PageSize = 1000.0;
int64 Pages = UKismetMathLibrary::FCeil64(RecordCount / PageSize); // returns 5000000Tags
Version History
Introduced in: 5.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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