---
name: "nvme_is_64bit_reg-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme_is_64bit_reg-libnvme3"
---

# nvme\_is\_64bit\_reg-libnvme3(2)

Checks if offset of the controller register is a know 64bit value.

## NAME

nvme\_is\_64bit\_reg - Checks if offset of the controller register is a know 64bit value.

## SYNOPSIS

**bool nvme\_is\_64bit\_reg** **(\_\_u32 offset** *);*

## ARGUMENTS

- offset

  Offset of controller register field in bytes

## DESCRIPTION

This function does not care about transport so that the offset is not going to be checked inside of this function for the unsupported fields in a specific transport. For example, BPMBL(Boot Partition Memory Buffer Location) register is not supported by fabrics, but it can be checked here.

## RETURN

true if given offset is 64bit register, otherwise it returns false.