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/*
* Copyright (C) 2010 Red Hat, Inc.
*
* Author: Angus Salkeld <asalkeld@redhat.com>
*
* libqb is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* libqb 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libqb. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QB_DEFS_H_DEFINED
#define QB_DEFS_H_DEFINED
/* *INDENT-OFF* */
#ifdef __cplusplus
extern "C" {
#endif
/* *INDENT-ON* */
/**
* @file qbdefs.h
* These are some convience macros and defines.
*
* @author Angus Salkeld <asalkeld@redhat.com>
*/
/*
* simple math macros
*/
#define QB_ROUNDUP(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#define QB_ABS(i) (((i) < 0) ? -(i) : (i))
#define QB_MAX(a, b) (((a) > (b)) ? (a) : (b))
#define QB_MIN(a, b) (((a) < (b)) ? (a) : (b))
/*
* the usual boolean defines
*/
#define QB_FALSE 0
#define QB_TRUE (!QB_FALSE)
/*
* bit manipulation
*/
#define qb_bit_value(bit) (1U << (bit))
#define qb_bit_set(barray, bit) (barray |= qb_bit_value(bit))
#define qb_bit_clear(barray, bit) (barray &= ~(qb_bit_value(bit)))
#define qb_bit_is_set(barray, bit) (barray & qb_bit_value(bit))
#define qb_bit_is_clear(barray, bit) (!(barray & qb_bit_value(bit)))
/*
* wrappers over preprocessor operators
*/
#define QB_PP_JOIN_(a, b) a##b
#define QB_PP_JOIN(a, b) QB_PP_JOIN_(a, b)
#define QB_PP_STRINGIFY_(arg) #arg
#define QB_PP_STRINGIFY(arg) QB_PP_STRINGIFY_(arg)
/*
* handy time based converters.
*/
#ifndef HZ
#define HZ 100 /* 10ms */
#endif
#define QB_TIME_MS_IN_SEC 1000ULL
#define QB_TIME_US_IN_SEC 1000000ULL
#define QB_TIME_NS_IN_SEC 1000000000ULL
#define QB_TIME_US_IN_MSEC 1000ULL
#define QB_TIME_NS_IN_MSEC 1000000ULL
#define QB_TIME_NS_IN_USEC 1000ULL
#if defined (__GNUC__) && defined (__STRICT_ANSI__)
#undef inline
#define inline __inline__
#undef typeof
#define typeof __typeof__
#endif /* ANSI */
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
#define QB_GNUC_DEPRECATED \
__attribute__((__deprecated__))
#else
#define QB_GNUC_DEPRECATED
#endif /* __GNUC__ */
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
#define QB_GNUC_DEPRECATED_FOR(f) \
__attribute__((deprecated("Use " #f " instead")))
#else
#define QB_GNUC_DEPRECATED_FOR(f) QB_GNUC_DEPRECATED
#endif /* __GNUC__ */
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
#define QB_GNUC_MAY_ALIAS __attribute__((may_alias))
#else
#define QB_GNUC_MAY_ALIAS
#endif
/* *INDENT-OFF* */
#ifdef __cplusplus
}
#endif /* __cplusplus */
/* *INDENT-ON* */
#endif /* QB_DEFS_H_DEFINED */

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