IS64U Kernel Service
Purpose
Determines if the current user-address space is 64-bit or not.
Syntax
#include <sys/types.h> #include <sys/user.h> int IS64U
Description
The IS64U kernel service returns 1 if the current user-address space is 64-bit. It returns 0 otherwise.
Execution Environment
The IS64U kernel service can be called from a process or interrupt handler environment. In either case, it will operate only on the current user-address space.
Return Values
| Item | Description |
|---|---|
| 0 | The current user-address space is 32-bits. |
| 1 | The current user-address space is 64-bits. |