1 /* 2 * nghttp3 3 * 4 * Copyright (c) 2019 nghttp3 contributors 5 * Copyright (c) 2017 ngtcp2 contributors 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining 8 * a copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sublicense, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be 16 * included in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 */ 26 #ifndef NGHTTP3_MACRO_H 27 #define NGHTTP3_MACRO_H 28 29 #ifdef HAVE_CONFIG_H 30 # include <config.h> 31 #endif /* HAVE_CONFIG_H */ 32 33 #include <stddef.h> 34 35 #include <nghttp3/nghttp3.h> 36 37 #define nghttp3_min(A, B) ((A) < (B) ? (A) : (B)) 38 #define nghttp3_max(A, B) ((A) > (B) ? (A) : (B)) 39 40 #define nghttp3_struct_of(ptr, type, member) \ 41 ((type *)(void *)((char *)(ptr)-offsetof(type, member))) 42 43 #define nghttp3_arraylen(A) (sizeof(A) / sizeof(*(A))) 44 45 #define lstreq(A, B, N) ((sizeof((A)) - 1) == (N) && memcmp((A), (B), (N)) == 0) 46 47 /* NGHTTP3_MAX_VARINT` is the maximum value which can be encoded in 48 variable-length integer encoding. */ 49 #define NGHTTP3_MAX_VARINT ((1ULL << 62) - 1) 50 51 #endif /* NGHTTP3_MACRO_H */ 52