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Member "dateutils-0.4.6/lib/generics.h" (19 Mar 2019, 2576 Bytes) of package /linux/privat/dateutils-0.4.6.tar.xz:


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    1 /*** generics.h -- type invariant generic funs
    2  *
    3  * Copyright (C) 2012-2019 Sebastian Freundt
    4  *
    5  * Author:  Sebastian Freundt <freundt@ga-group.nl>
    6  *
    7  * This file is part of dateutils.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  *
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  *
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * 3. Neither the name of the author nor the names of any contributors
   21  *    may be used to endorse or promote products derived from this
   22  *    software without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
   25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   26  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   27  * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
   31  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   32  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
   33  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
   34  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   35  *
   36  ***/
   37 
   38 #if !defined INCLUDED_generics_h_
   39 #define INCLUDED_generics_h_
   40 
   41 #if defined HAVE_CONFIG_H
   42 # include "config.h"
   43 #endif  /* HAVE_CONFIG_H */
   44 
   45 #if defined __cplusplus
   46 extern "C" {
   47 #endif  /* __cplusplus */
   48 
   49 /**
   50  * Compare two dates, yielding 0 if they are equal, -1 if D1 is older,
   51  * 1 if D1 is younger than the D2. */
   52 #define dt_cmp(d1, d2)                      \
   53     _Generic((d1),                      \
   54          struct dt_d_s: dt_dcmp,            \
   55          struct dt_t_s: dt_tcmp,            \
   56          struct dt_dt_s: dt_dtcmp,          \
   57          default: NULL                  \
   58         )(d1, d2)
   59 
   60 /**
   61  * Check if D is in the interval spanned by D1 and D2,
   62  * 1 if D1 is younger than the D2. */
   63 #define dt_in_range_p(d, d1, d2)                    \
   64     _Generic((d1),                          \
   65          struct dt_d_s: dt_d_in_range_p,            \
   66          struct dt_t_s: dt_t_in_range_p,            \
   67          struct dt_dt_s: dt_dt_in_range_p,          \
   68          default: NULL                      \
   69         )(d, d1, d2)
   70 
   71 #if defined __cplusplus
   72 }
   73 #endif  /* __cplusplus */
   74 
   75 #endif  /* INCLUDED_generics_h_ */