Files
openairinterface5g/openair1/PHY/TOOLS/log2_approx.c
T
Raymond Knopp 4fc7846f13 Merge branch 'RU-RAU-split' of https://gitlab.eurecom.fr/oai/openairinterface5g into RU-RAU-split
Conflicts:
	openair1/PHY/INIT/lte_init.c
	openair1/PHY/LTE_TRANSPORT/dlsch_coding.c
	openair1/PHY/LTE_TRANSPORT/prach.c
	openair1/SCHED/phy_procedures_lte_eNb.c
	openair2/ENB_APP/enb_config.c
	openair2/LAYER2/MAC/defs.h
	openair2/LAYER2/MAC/eNB_scheduler.c
	openair2/LAYER2/MAC/eNB_scheduler_RA.c
	openair2/LAYER2/MAC/eNB_scheduler_bch.c
	openair2/LAYER2/MAC/eNB_scheduler_primitives.c
	openair2/LAYER2/MAC/eNB_scheduler_ulsch.c
	openair2/LAYER2/MAC/rar_tools.c
	openair2/RRC/LITE/MESSAGES/asn1_msg.c
	openair2/RRC/LITE/rrc_eNB.c
2017-10-10 22:09:13 -07:00

77 lines
1.7 KiB
C
Executable File

/*
* 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 1.0 (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
*/
unsigned char log2_approx(unsigned int x)
{
int i;
unsigned char l2;
l2=0;
for (i=0; i<31; i++)
if ((x&(1<<i)) != 0)
l2 = i+1;
//l2 = i;
// printf("log2_approx = %d\n",l2);
return(l2);
}
unsigned char factor2(unsigned int x)
{
int i;
unsigned char l2;
l2=0;
for (i=0; i<31; i++)
if ((x&(1<<i)) != 0)
break;
l2 = i;
//printf("factor2(%d) = %d\n",x,l2);
return(l2);
}
unsigned char log2_approx64(unsigned long long int x)
{
int i;
unsigned char l2;
l2=0;
for (i=0; i<63; i++)
if ((x&(((long long int) 1)<<i)) != 0)
// l2 = i+1;
l2 = i;
// printf("log2_approx = %d\n",l2);
return(l2);
}