RtlRandomEx function (ntifs.h)
The RtlRandomEx routine returns a random number that was generated from a given seed value.
Syntax
NTSYSAPI ULONG RtlRandomEx(
[in, out] PULONG Seed
);
Parameters
[in, out] Seed
Unsigned long value from which to generate a random number.
Return value
RtlRandomEx returns a random number in the range [0..MAXLONG-1].
Remarks
RtlRandomEx returns values that are uniformly distributed over the range from zero to the maximum possible LONG value less 1 if it is called repeatedly with the same Seed.
The RtlRandomEx function is an improved version of the RtlRandom function. Compared with the RtlRandom function, RtlRandomEx is twice as fast and produces better random numbers since the period of the random numbers generated is comparatively higher.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP |
| Target Platform | Universal |
| Header | ntifs.h (include Ntifs.h, Fltkernel.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | < DISPATCH_LEVEL |