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/*
* ngtcp2
*
* Copyright (c) 2017 ngtcp2 contributors
*
* 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 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 NGTCP2_MACRO_H
#define NGTCP2_MACRO_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <stddef.h>
#include <ngtcp2/ngtcp2.h>
#define ngtcp2_struct_of(ptr, type, member) \
((type *)(void *)((char *)(ptr) - offsetof(type, member)))
/* ngtcp2_list_insert inserts |T| before |*PD|. The contract is that
this is singly linked list, and the next element is pointed by next
field of the previous element. |PD| must be a pointer to the
pointer to the next field of the previous element of |*PD|: if C is
the previous element of |PD|, PD = &C->next. */
#define ngtcp2_list_insert(T, PD) \
do { \
(T)->next = *(PD); \
*(PD) = (T); \
} while (0)
/*
* ngtcp2_arraylen returns the number of elements in array |A|.
*/
#define ngtcp2_arraylen(A) (sizeof(A) / sizeof(A[0]))
#define ngtcp2_max_def(SUFFIX, T) \
static inline T ngtcp2_max_##SUFFIX(T a, T b) { return a < b ? b : a; }
ngtcp2_max_def(int8, int8_t);
ngtcp2_max_def(int16, int16_t);
ngtcp2_max_def(int32, int32_t);
ngtcp2_max_def(int64, int64_t);
ngtcp2_max_def(uint8, uint8_t);
ngtcp2_max_def(uint16, uint16_t);
ngtcp2_max_def(uint32, uint32_t);
ngtcp2_max_def(uint64, uint64_t);
ngtcp2_max_def(size, size_t);
#define ngtcp2_min_def(SUFFIX, T) \
static inline T ngtcp2_min_##SUFFIX(T a, T b) { return a < b ? a : b; }
ngtcp2_min_def(int8, int8_t);
ngtcp2_min_def(int16, int16_t);
ngtcp2_min_def(int32, int32_t);
ngtcp2_min_def(int64, int64_t);
ngtcp2_min_def(uint8, uint8_t);
ngtcp2_min_def(uint16, uint16_t);
ngtcp2_min_def(uint32, uint32_t);
ngtcp2_min_def(uint64, uint64_t);
ngtcp2_min_def(size, size_t);
#endif /* NGTCP2_MACRO_H */
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