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/*** generics.h -- type invariant generic funs
*
* Copyright (C) 2012-2024 Sebastian Freundt
*
* Author: Sebastian Freundt <freundt@ga-group.nl>
*
* This file is part of dateutils.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the author nor the names of any contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
***/
#if !defined INCLUDED_generics_h_
#define INCLUDED_generics_h_
#if defined HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#if defined __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* Compare two dates, yielding 0 if they are equal, -1 if D1 is older,
* 1 if D1 is younger than the D2. */
#define dt_cmp(d1, d2) \
_Generic((d1), \
struct dt_d_s: dt_dcmp, \
struct dt_t_s: dt_tcmp, \
struct dt_dt_s: dt_dtcmp, \
default: NULL \
)(d1, d2)
/**
* Check if D is in the interval spanned by D1 and D2,
* 1 if D1 is younger than the D2. */
#define dt_in_range_p(d, d1, d2) \
_Generic((d1), \
struct dt_d_s: dt_d_in_range_p, \
struct dt_t_s: dt_t_in_range_p, \
struct dt_dt_s: dt_dt_in_range_p, \
default: NULL \
)(d, d1, d2)
#if defined __cplusplus
}
#endif /* __cplusplus */
#endif /* INCLUDED_generics_h_ */
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