/*
 * Copyright © 2022 Google, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef FREEDRENO_COMMON_H_
#define FREEDRENO_COMMON_H_


/**
 * Helper macro to get around c++ being cranky about an enum that is a bitmask
 */
#ifdef __cplusplus
#define or_mask(d, mask)                                                       \
   do {                                                                        \
      decltype(mask) _d = (d);                                                 \
      d = (decltype(mask))(_d | (mask));                                       \
   } while (0)
#else
#define or_mask(d, mask)                                                       \
   do {                                                                        \
      d |= (mask);                                                             \
   } while (0)
#endif

/*
 * swap - swap value of @a and @b
 */
#define swap(a, b)                                                             \
   do {                                                                        \
      __typeof(a) __tmp = (a);                                                 \
      (a) = (b);                                                               \
      (b) = __tmp;                                                             \
   } while (0)

/* for conditionally setting boolean flag(s): */
#define COND(bool, val) ((bool) ? (val) : 0)

#define BIT(bit) BITFIELD_BIT(bit)

#endif /* FREEDRENO_COMMON_H_ */