URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [tags/] [or1ksim/] [or1ksim-0.3.0/] [support/] [misc.c] - Rev 219
Go to most recent revision | Compare with Previous | Blame | View Log
/* misc.c -- Misc. routines that just don't fit anywhere else Copyright (C) 1999 Damjan Lampret, lampret@opencores.org Copyright (C) 2002 Marko Mlinar, markom@opencores.org Copyright (C) 2008 Embecosm Limited Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator. 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 3 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, see <http://www.gnu.org/licenses/>. */ /* This program is commented throughout in a fashion suitable for processing with Doxygen. */ /* Autoconf and/or portability configuration */ #include "config.h" /* returns log2(x) */ /* Call this log2_int, because there is a library function named log2 */ int log2_int (unsigned long x) { int c = 0; if (!x) return 0; /* not by the book, but practical */ while (x != 1) x >>= 1, c++; return c; } int is_power2 (int x) { if (!x) return 0; while (!(x & 1)) x >>= 1; return x == 1; }
Go to most recent revision | Compare with Previous | Blame | View Log