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Added RtlRandom() and RtlUniform().

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svn path=/trunk/; revision=4864
This commit is contained in:
Eric Kohl 2003-06-07 11:33:13 +00:00
parent cafd29d267
commit 83f9a49a15
9 changed files with 274 additions and 14 deletions
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7
reactos/include/ntos/rtl.h
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@ -1,4 +1,4 @@
/* $Id: rtl.h,v 1.10 2003/05/28 18:09:09 chorns Exp $
/* $Id: rtl.h,v 1.11 2003/06/07 11:29:30 ekohl Exp $
*
*/
@ -2198,6 +2198,11 @@ BOOLEAN STDCALL RtlAreAllAccessesGranted (ACCESS_MASK GrantedAccess, ACCESS_MASK
BOOLEAN STDCALL RtlAreAnyAccessesGranted (ACCESS_MASK GrantedAccess, ACCESS_MASK DesiredAccess);
VOID STDCALL RtlMapGenericMask (PACCESS_MASK AccessMask, PGENERIC_MAPPING GenericMapping);
ULONG STDCALL
RtlRandom (PULONG Seed);
ULONG STDCALL
RtlUniform (PULONG Seed);
/* functions exported from NTOSKRNL.EXE which are considered RTL */

6
reactos/lib/ntdll/def/ntdll.def
View file

@ -1,4 +1,4 @@
; $Id: ntdll.def,v 1.100 2003/05/31 11:08:08 ekohl Exp $
; $Id: ntdll.def,v 1.101 2003/06/07 11:32:42 ekohl Exp $
;
; ReactOS Operating System
;
@ -519,7 +519,7 @@ RtlQueryRegistryValues@20
RtlQueryTimeZoneInformation@4
RtlRaiseException@4
RtlRaiseStatus@4
;RtlRandom
RtlRandom@4
RtlReAllocateHeap@16
;RtlRealPredecessor
;RtlRealSuccessor
@ -575,7 +575,7 @@ RtlUnicodeToCustomCPN@24
RtlUnicodeToMultiByteN@20
RtlUnicodeToMultiByteSize@12
RtlUnicodeToOemN@20
;RtlUniform
RtlUniform@4
RtlUnlockHeap@4
RtlUnwind@16
RtlUpcaseUnicodeChar@4

6
reactos/lib/ntdll/def/ntdll.edf
View file

@ -1,4 +1,4 @@
; $Id: ntdll.edf,v 1.89 2003/05/31 11:08:08 ekohl Exp $
; $Id: ntdll.edf,v 1.90 2003/06/07 11:32:42 ekohl Exp $
;
; ReactOS Operating System
;
@ -518,7 +518,7 @@ RtlQueryRegistryValues=RtlQueryRegistryValues@20
RtlQueryTimeZoneInformation=RtlQueryTimeZoneInformation@4
RtlRaiseException=RtlRaiseException@4
RtlRaiseStatus=RtlRaiseStatus@4
;RtlRandom
RtlRandom=RtlRandom@4
RtlReAllocateHeap=RtlReAllocateHeap@16
;RtlRealPredecessor
;RtlRealSuccessor
@ -574,7 +574,7 @@ RtlUnicodeToCustomCPN=RtlUnicodeToCustomCPN@24
RtlUnicodeToMultiByteN=RtlUnicodeToMultiByteN@20
RtlUnicodeToMultiByteSize=RtlUnicodeToMultiByteSize@12
RtlUnicodeToOemN=RtlUnicodeToOemN@20
;RtlUniform
RtlUniform=RtlUniform@4
RtlUnlockHeap=RtlUnlockHeap@4
RtlUnwind=RtlUnwind@16
RtlUpcaseUnicodeChar=RtlUpcaseUnicodeChar@4

4
reactos/lib/ntdll/makefile
View file

@ -1,4 +1,4 @@
# $Id: makefile,v 1.84 2003/05/27 19:40:20 hbirr Exp $
# $Id: makefile,v 1.85 2003/06/07 11:33:13 ekohl Exp $
PATH_TO_TOP = ../..
@ -43,7 +43,7 @@ RTL_OBJECTS = rtl/critical.o rtl/error.o rtl/heap.o rtl/largeint.o \
rtl/registry.o rtl/exception.o rtl/intrlck.o rtl/resource.o \
rtl/handle.o rtl/atom.o rtl/message.o rtl/timezone.o \
rtl/propvar.o rtl/security.o rtl/dos8dot3.o rtl/compress.o \
rtl/encode.o
rtl/encode.o rtl/random.o
STDIO_OBJECTS = stdio/sprintf.o stdio/swprintf.o

158
reactos/lib/ntdll/rtl/random.c Normal file
View file

@ -0,0 +1,158 @@
/*
* ReactOS kernel
* Copyright (C) 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: random.c,v 1.1 2003/06/07 11:32:03 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* PURPOSE: Random number generator functions
* FILE: lib/ntdll/rtl/random.c
*/
#define NTOS_MODE_USER
#include <ntos.h>
static ULONG SavedValue[128] =
{
0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, /* 0 */
0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa, /* 4 */
0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, /* 8 */
0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09, /* 12 */
0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, /* 16 */
0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311, /* 20 */
0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, /* 24 */
0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82, /* 28 */
0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, /* 32 */
0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd, /* 36 */
0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, /* 40 */
0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52, /* 44 */
0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, /* 48 */
0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb, /* 52 */
0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, /* 56 */
0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e, /* 60 */
0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, /* 64 */
0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0, /* 68 */
0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, /* 72 */
0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd, /* 76 */
0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, /* 80 */
0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35, /* 84 */
0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, /* 88 */
0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379, /* 92 */
0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, /* 96 */
0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd, /* 100 */
0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, /* 104 */
0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b, /* 108 */
0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, /* 112 */
0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b, /* 116 */
0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, /* 120 */
0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d /* 124 */
};
/* FUNCTIONS ***************************************************************/
/*************************************************************************
* RtlRandom [NTDLL.@]
*
* Generates a random number
*
* PARAMS
* Seed [O] The seed of the Random function
*
* RETURNS
* It returns a random number distributed over [0..MAXLONG-1].
*/
ULONG STDCALL
RtlRandom (IN OUT PULONG Seed)
{
ULONG Rand;
int Pos;
ULONG Result;
Rand = (*Seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
*Seed = (Rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
Pos = *Seed & 0x7f;
Result = SavedValue[Pos];
SavedValue[Pos] = Rand;
return Result;
}
/*************************************************************************
* RtlUniform [NTDLL.@]
*
* Generates an uniform random number
*
* PARAMS
* Seed [O] The seed of the Random function
*
* RETURNS
* It returns a random number uniformly distributed over [0..MAXLONG-1].
*
* NOTES
* Generates an uniform random number using D.H. Lehmer's 1948 algorithm.
* In our case the algorithm is:
*
* Result = (*Seed * 0x7fffffed + 0x7fffffc3) % MAXLONG;
*
* *Seed = Result;
*
* DIFFERENCES
* The native documentation states that the random number is
* uniformly distributed over [0..MAXLONG]. In reality the native
* function and our function return a random number uniformly
* distributed over [0..MAXLONG-1].
*/
ULONG STDCALL
RtlUniform (PULONG Seed)
{
ULONG Result;
/*
* Instead of the algorithm stated above, we use the algorithm
* below, which is totally equivalent (see the tests), but does
* not use a division and therefore is faster.
*/
Result = *Seed * 0xffffffed + 0x7fffffc3;
if (Result == 0xffffffff || Result == 0x7ffffffe)
{
Result = (Result + 2) & MAXLONG;
}
else if (Result == 0x7fffffff)
{
Result = 0;
}
else if ((Result & 0x80000000) == 0)
{
Result = Result + (~Result & 1);
}
else
{
Result = (Result + (Result & 1)) & MAXLONG;
}
*Seed = Result;
return Result;
}
/* EOF */

3
reactos/ntoskrnl/Makefile
View file

@ -1,4 +1,4 @@
# $Id: Makefile,v 1.97 2003/06/01 19:18:09 hbirr Exp $
# $Id: Makefile,v 1.98 2003/06/07 11:31:06 ekohl Exp $
#
# ReactOS Operating System
#
@ -95,6 +95,7 @@ OBJECTS_RTL = \
rtl/nls.o \
rtl/purecall.o \
rtl/qsort.o \
rtl/random.o \
rtl/regio.o \
rtl/sprintf.o \
rtl/stdlib.o \

4
reactos/ntoskrnl/ntoskrnl.def
View file

@ -1,4 +1,4 @@
; $Id: ntoskrnl.def,v 1.153 2003/06/02 10:04:28 ekohl Exp $
; $Id: ntoskrnl.def,v 1.154 2003/06/07 11:31:06 ekohl Exp $
;
; reactos/ntoskrnl/ntoskrnl.def
;
@ -803,7 +803,7 @@ RtlQueryAtomInAtomTable@24
RtlQueryRegistryValues@20
RtlQueryTimeZoneInformation@4
RtlRaiseException@4
;RtlRandom
RtlRandom@4
;RtlRemoveUnicodePrefix
RtlReserveChunk@20
RtlSecondsSince1970ToTime@8

4
reactos/ntoskrnl/ntoskrnl.edf
View file

@ -1,4 +1,4 @@
; $Id: ntoskrnl.edf,v 1.139 2003/06/02 10:04:28 ekohl Exp $
; $Id: ntoskrnl.edf,v 1.140 2003/06/07 11:31:06 ekohl Exp $
;
; reactos/ntoskrnl/ntoskrnl.def
;
@ -801,7 +801,7 @@ RtlQueryAtomInAtomTable=RtlQueryAtomInAtomTable@24
RtlQueryRegistryValues=RtlQueryRegistryValues@20
RtlQueryTimeZoneInformation=RtlQueryTimeZoneInformation@4
RtlRaiseException=RtlRaiseException@4
;RtlRandom
RtlRandom=RtlRandom@4
;RtlRemoveUnicodePrefix
RtlReserveChunk=RtlReserveChunk@20
RtlSecondsSince1970ToTime=RtlSecondsSince1970ToTime@8

96
reactos/ntoskrnl/rtl/random.c Normal file
View file

@ -0,0 +1,96 @@
/*
* ReactOS kernel
* Copyright (C) 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: random.c,v 1.1 2003/06/07 11:30:10 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* PURPOSE: Random number generator functions
* FILE: ntoskrnl/rtl/random.c
*/
/* INCLUDES *****************************************************************/
#include <ddk/ntddk.h>
static ULONG SavedValue[128] =
{
0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, /* 0 */
0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa, /* 4 */
0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, /* 8 */
0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09, /* 12 */
0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, /* 16 */
0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311, /* 20 */
0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, /* 24 */
0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82, /* 28 */
0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, /* 32 */
0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd, /* 36 */
0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, /* 40 */
0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52, /* 44 */
0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, /* 48 */
0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb, /* 52 */
0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, /* 56 */
0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e, /* 60 */
0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, /* 64 */
0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0, /* 68 */
0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, /* 72 */
0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd, /* 76 */
0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, /* 80 */
0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35, /* 84 */
0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, /* 88 */
0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379, /* 92 */
0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, /* 96 */
0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd, /* 100 */
0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, /* 104 */
0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b, /* 108 */
0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, /* 112 */
0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b, /* 116 */
0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, /* 120 */
0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d /* 124 */
};
/*************************************************************************
* RtlRandom [NTDLL.@]
*
* Generates a random number
*
* PARAMS
* Seed [O] The seed of the Random function
*
* RETURNS
* It returns a random number distributed over [0..MAXLONG-1].
*/
ULONG STDCALL
RtlRandom (IN OUT PULONG Seed)
{
ULONG Rand;
int Pos;
ULONG Result;
Rand = (*Seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
*Seed = (Rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
Pos = *Seed & 0x7f;
Result = SavedValue[Pos];
SavedValue[Pos] = Rand;
return Result;
}
/* EOF */