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Laurent Thomas
2022-03-02 11:26:16 +01:00
parent dca9be3c33 bf70a3bfb4
commit 4c62aef755
530 changed files with 6312 additions and 21042 deletions
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185
openair2/UTIL/MATH/crc_byte.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*
May 10, 2001
Modified in June, 2001, to include the length non multiple of 8
crc_byte.c
Byte oriented implementation of CRC's
*/
#include "rtos_header.h"
#include "platform_types.h"
/*ref 25.222 v4.0.0 , p12 */
/* the highest degree is set by default */
unsigned int poly24 = 0x80006100; // 1000 0000 0000 0000 0110 0001 D^24 + D^23 + D^6 + D^5 + D + 1
unsigned int poly16 = 0x10210000; // 0001 0000 0010 0001 D^16 + D^12 + D^5 + 1
unsigned int poly12 = 0x80F00000; // 1000 0000 1111 D^12 + D^11 + D^3 + D^2 + D + 1
unsigned int poly8 = 0x9B000000; // 1001 1011 D^8 + D^7 + D^4 + D^3 + D + 1
/*********************************************************
For initialization && verification purposes,
bit by bit implementation with any polynomial
The first bit is in the MSB of each byte
*********************************************************/
static unsigned int
crcbit (unsigned char * inputptr, int octetlen, unsigned int poly)
{
unsigned int i, crc = 0, c;
while (octetlen-- > 0) {
c = (*inputptr++) << 24;
for (i = 8; i != 0; i--) {
if ((1 << 31) & (c ^ crc))
crc = (crc << 1) ^ poly;
else
crc <<= 1;
c <<= 1;
}
}
return crc;
}
/*********************************************************
crc table initialization
*********************************************************/
static unsigned int crc24Table[256];
static unsigned short crc16Table[256];
static unsigned short crc12Table[256];
static unsigned char crc8Table[256];
void
crcTableInit ()
{
unsigned char c = 0;
do {
crc24Table[c] = crcbit (&c, 1, poly24);
crc16Table[c] = (unsigned short) (crcbit (&c, 1, poly16) >> 16);
crc12Table[c] = (unsigned short) (crcbit (&c, 1, poly12) >> 16);
crc8Table[c] = (unsigned char) (crcbit (&c, 1, poly8) >> 24);
} while (++c);
}
/*********************************************************
Byte by byte implementations,
assuming initial byte is 0 padded (in MSB) if necessary
*********************************************************/
unsigned int
crc24 (unsigned char * inptr, int bitlen)
{
int octetlen, resbit;
unsigned int crc = 0;
octetlen = bitlen / 8; /* Change in octets */
resbit = (bitlen % 8);
while (octetlen-- > 0) {
crc = (crc << 8) ^ crc24Table[(*inptr++) ^ (crc >> 24)];
}
if (resbit > 0)
crc = (crc << resbit) ^ crc24Table[((*inptr) >> (8 - resbit)) ^ (crc >> (32 - resbit))];
return crc;
}
unsigned int
crc16 (unsigned char * inptr, int bitlen)
{
int octetlen, resbit;
unsigned int crc = 0;
octetlen = bitlen / 8; /* Change in octets */
resbit = (bitlen % 8);
while (octetlen-- > 0) {
crc = (crc << 8) ^ (crc16Table[(*inptr++) ^ (crc >> 24)] << 16);
}
if (resbit > 0)
crc = (crc << resbit) ^ (crc16Table[((*inptr) >> (8 - resbit)) ^ (crc >> (32 - resbit))] << 16);
return crc;
}
unsigned int
crc12 (unsigned char * inptr, int bitlen)
{
int octetlen, resbit;
unsigned int crc = 0;
octetlen = bitlen / 8; /* Change in octets */
resbit = (bitlen % 8);
while (octetlen-- > 0) {
crc = (crc << 8) ^ (crc12Table[(*inptr++) ^ (crc >> 24)] << 16);
}
if (resbit > 0)
crc = (crc << resbit) ^ (crc12Table[((*inptr) >> (8 - resbit)) ^ (crc >> (32 - resbit))] << 16);
return crc;
}
unsigned int
crc8 (unsigned char * inptr, int bitlen)
{
int octetlen, resbit;
unsigned int crc = 0;
octetlen = bitlen / 8; /* Change in octets */
resbit = (bitlen % 8);
while (octetlen-- > 0) {
crc = crc8Table[(*inptr++) ^ (crc >> 24)] << 24;
}
if (resbit > 0)
crc = (crc << resbit) ^ (crc8Table[((*inptr) >> (8 - resbit)) ^ (crc >> (32 - resbit))] << 24);
return crc;
}
/*******************************************************************/
/**
Test code
********************************************************************/
/* #ifdef MAIN
#include <stdio.h>
main()
{
unsigned char test[] = "Thebigredfox";
crcTableInit();
printf("%x\n", crcbit(test, sizeof(test) - 1, poly24));
printf("%x\n", crc24(test, (sizeof(test) - 1)*8));
printf("%x\n", crcbit(test, sizeof(test) - 1, poly8));
printf("%x\n", crc8(test, (sizeof(test) - 1)*8));
}
#endif */

30
openair2/UTIL/MATH/random_proto_extern.h
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*
random_proto_extern.h
-------------------
AUTHOR : Lionel GAUTHIER
COMPANY : EURECOM
EMAIL : Lionel.Gauthier@eurecom.fr
***************************************************************************/
extern int uniform (void);

116
openair2/UTIL/MATH/taus.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file taus.c
* \brief random number generator per OAI component
* \author Navid Nikaein
* \date 2011 - 2014
* \version 0.1
* \email navid.nikaein@eurecom.fr
* \warning
* @ingroup util
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include "oml.h"
unsigned int s0[MAX_NUM_COMPS], s1[MAX_NUM_COMPS], s2[MAX_NUM_COMPS], b[MAX_NUM_COMPS], r[MAX_NUM_COMPS];
inline unsigned int taus(unsigned int comp) {
b[comp] = (((s0[comp] << 13) ^ s0[comp]) >> 19);
s0[comp] = (((s0[comp] & 0xFFFFFFFE) << 12)^ b[comp]);
b[comp] = (((s1[comp] << 2) ^ s1[comp]) >> 25);
s1[comp] = (((s1[comp] & 0xFFFFFFF8) << 4)^ b[comp]);
b[comp] = (((s2[comp] << 3) ^ s2[comp]) >> 11);
s2[comp] = (((s2[comp] & 0xFFFFFFF0) << 17)^ b[comp]);
r[comp] = s0[comp] ^ s1[comp] ^ s2[comp];
return r[comp];
}
/*void set_taus_seed(unsigned int seed_type) {
unsigned int i; // i index of component
for (i=MIN_NUM_COMPS; i < MAX_NUM_COMPS ; i ++) {
switch (seed_type) {
case 0: // use rand func
if (i == 0) srand(time(NULL));
s0[i] = ((unsigned int)rand());
s1[i] = ((unsigned int)rand());
s2[i] = ((unsigned int)rand());
printf("Initial seeds use rand: s0[%u] = 0x%x, s1[%u] = 0x%x, s2[%u] = 0x%x\n", i, s0[i], i, s1[i], i, s2[i]);
break;
case 1: // use rand with seed
if (i == 0) srand(0x1e23d851);
s0[i] = ((unsigned int)rand());
s1[i] = ((unsigned int)rand());
s2[i] = ((unsigned int)rand());
printf("Initial seeds use rand with seed : s0[%u] = 0x%x, s1[%u] = 0x%x, s2[%u] = 0x%x\n", i, s0[i], i, s1[i], i, s2[i]);
break;
default:
break;
}
}
}*/
int get_rand (unsigned int comp) {
if ((comp > MIN_NUM_COMPS) && (comp < MAX_NUM_COMPS))
return r[comp];
else {
//LOG_E(RNG,"unknown component %d\n",comp);
return -1;
}
}
unsigned int dtaus(unsigned int comp, unsigned int a, unsigned b) {
return (int) (((double)taus(comp)/(double)0xffffffff)* (double)(b-a) + (double)a);
}
/*
#ifdef STANDALONE
main() {
unsigned int i,randomg, randphy;
set_taus_seed(0);
printf("dtaus %d \n",dtaus(PHY, 1000, 1000000));
do {//for (i=0;i<10;i++){
randphy = taus(PHY);
randomg = taus(OTG);
i++;
// printf("rand for OMG (%d,0x%x) PHY (%d,0x%x)\n",OMG, randomg, PHY, randphy);
} while (randphy != randomg);
printf("after %d run: get rand for (OMG 0x%x, PHY 0x%x)\n",i, get_rand(OTG), get_rand(PHY));
}
#endif
*/