/*
 * CHU - Misc utilities
 * Copyright (C) 2026 Javier S. Pedro
 *
 * 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 <https://www.gnu.org/licenses/>.
 */

#ifndef UTILS_H
#define UTILS_H

#define SWAPNC_32(w)    (\
                            (((w) & 0x000000FFUL) << 24) |\
                            (((w) & 0x0000FF00UL) << 8) |\
                            (((w) & 0x00FF0000UL) >> 8) |\
                            (((w) & 0xFF000000UL) >> 24)\
                        )

/** Computes log2 for an unsigned integer, uses 386+ bsr instruction */
static inline unsigned ulog2(uint32_t x);
#pragma aux ulog2 = "bsr eax, eax" parm [eax] value [eax] modify exact [] nomemory

#endif // UTILS_H