GNU Radio 2.x: gr_log2_const.h Source File

00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2006 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00020  * Boston, MA 02111-1307, USA.
00021  */
00022 
00023 
00024 /*
00025  * a bit of template hackery...
00026  */
00027 #ifndef INCLUDED_GR_LOG2_CONST_H
00028 #define INCLUDED_GR_LOG2_CONST_H
00029 
00030 #include <assert.h>
00031 
00032 template<unsigned int k> static inline int gr_log2_const() { assert(0); }
00033 
00034 template<> static inline int gr_log2_const<1>()   { return 0; }
00035 template<> static inline int gr_log2_const<2>()   { return 1; }
00036 template<> static inline int gr_log2_const<4>()   { return 2; }
00037 template<> static inline int gr_log2_const<8>()   { return 3; }
00038 template<> static inline int gr_log2_const<16>()  { return 4; }
00039 template<> static inline int gr_log2_const<32>()  { return 5; }
00040 template<> static inline int gr_log2_const<64>()  { return 6; }
00041 template<> static inline int gr_log2_const<128>() { return 7; }
00042 template<> static inline int gr_log2_const<256>() { return 8; }
00043 template<> static inline int gr_log2_const<512>() { return 9; }
00044 template<> static inline int gr_log2_const<1024>(){ return 10; }
00045 
00046 #endif /* INCLUDED_GR_LOG2_CONST_H */