NTSTATUS __stdcall FindEmailAt(PWCHAR pInput, INT64 cchInput){
int v2;
WCHAR *v3;
v2 = cchInput - 1;
v3 = &pInput[(int)cchInput - 1];
if( (int)cchInput <= 0 )
return cchInput;
while( *v3 != 64 )
{
--v3;
if( --v2 < 0 )
return cchInput;
}
return v2 + 1;
}