ghaddab
0ebcc43f67
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5710 818b1a75-f10b-46b9-bf7c-635c3b92a50f
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*******************************************************************************
|
|
OpenAirInterface
|
|
Copyright(c) 1999 - 2014 Eurecom
|
|
|
|
OpenAirInterface 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
|
|
OpenAirInterface 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 OpenAirInterface.The full GNU General Public License is
|
|
included in this distribution in the file called "COPYING". If not,
|
|
see <http://www.gnu.org/licenses/>.
|
|
|
|
Contact Information
|
|
OpenAirInterface Admin: openair_admin@eurecom.fr
|
|
OpenAirInterface Tech : openair_tech@eurecom.fr
|
|
OpenAirInterface Dev : openair4g-devel@eurecom.fr
|
|
|
|
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
|
|
|
|
*******************************************************************************/
|
|
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 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);
|
|
}
|
|
|