RtlRandom function (ntifs.h)

The RtlRandom routine returns a random number that was generated from a given seed value.

Syntax

NTSYSAPI ULONG RtlRandom(
  [in, out] PULONG Seed
);

Parameters

[in, out] Seed

Unsigned long value from which to generate a random number.

Return value

RtlRandom returns a random number in the range [0..MAXLONG-1].

Remarks

RtlRandom 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 that is twice as fast and produces better random numbers.

Requirements

Requirement	Value
Minimum supported client	Windows 2000
Target Platform	Universal
Header	ntifs.h (include Ntifs.h, Fltkernel.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	< DISPATCH_LEVEL

See also

RtlRandomEx