RtlSuffixUnicodeString - NtDoc

#ifndef _NTRTL_H
#if (PHNT_MODE == PHNT_MODE_KERNEL && PHNT_VERSION >= PHNT_THRESHOLD)

_Must_inspect_result_
NTSYSAPI
BOOLEAN
NTAPI
RtlSuffixUnicodeString(
    _In_ PUNICODE_STRING String1,
    _In_ PUNICODE_STRING String2,
    _In_ BOOLEAN CaseInSensitive
    );

#endif
#endif
View code on GitHub