macros.h

00001 /* libFLAC - Free Lossless Audio Codec library
00002  * Copyright (C) 2012-2014  Xiph.org Foundation
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * - Redistributions of source code must retain the above copyright
00009  * notice, this list of conditions and the following disclaimer.
00010  *
00011  * - Redistributions in binary form must reproduce the above copyright
00012  * notice, this list of conditions and the following disclaimer in the
00013  * documentation and/or other materials provided with the distribution.
00014  *
00015  * - Neither the name of the Xiph.org Foundation nor the names of its
00016  * contributors may be used to endorse or promote products derived from
00017  * this software without specific prior written permission.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00022  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
00023  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00024  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00025  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00026  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00027  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00028  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00029  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030  */
00031 
00032 #ifndef FLAC__PRIVATE__MACROS_H
00033 #define FLAC__PRIVATE__MACROS_H
00034 
00035 #if defined(__GNUC__) && (__GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 3))
00036 
00037 #define flac_max(a,b) \
00038     ({ __typeof__ (a) _a = (a); \
00039     __typeof__ (b) _b = (b); \
00040     _a > _b ? _a : _b; })
00041 
00042 #define MIN_PASTE(A,B) A##B
00043 #define MIN_IMPL(A,B,L) ({ \
00044     __typeof__(A) MIN_PASTE(__a,L) = (A); \
00045     __typeof__(B) MIN_PASTE(__b,L) = (B); \
00046     MIN_PASTE(__a,L) < MIN_PASTE(__b,L) ? MIN_PASTE(__a,L) : MIN_PASTE(__b,L); \
00047     })
00048 
00049 #define flac_min(A,B) MIN_IMPL(A,B,__COUNTER__)
00050 
00051 /* Whatever other unix that has sys/param.h */
00052 #elif defined(HAVE_SYS_PARAM_H)
00053 #include <sys/param.h>
00054 #define flac_max(a,b) MAX(a,b)
00055 #define flac_min(a,b) MIN(a,b)
00056 
00057 /* Windows VS has them in stdlib.h.. XXX:Untested */
00058 #elif defined(_MSC_VER)
00059 #include <stdlib.h>
00060 #define flac_max(a,b) __max(a,b)
00061 #define flac_min(a,b) __min(a,b)
00062 #else  /* mbed - end mbed */
00063 #if(1) /* mbed */
00064 #define flac_max(a,b) MAX(a,b)
00065 #define flac_min(a,b) MIN(a,b)
00066 #endif /* end mbed */
00067 #endif
00068 
00069 #ifndef MIN
00070 #define MIN(x,y)    ((x) <= (y) ? (x) : (y))
00071 #endif
00072 
00073 #ifndef MAX
00074 #define MAX(x,y)    ((x) >= (y) ? (x) : (y))
00075 #endif
00076 
00077 #endif