| Bram Moolenaar | e828b76 | 2018-09-10 17:51:58 +0200 | [diff] [blame] | 1 | /* |
| 2 | * LibXDiff by Davide Libenzi ( File Differential Library ) |
| 3 | * Copyright (C) 2003 Davide Libenzi |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU Lesser General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2.1 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This library is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with this library; if not, see |
| 17 | * <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | * Davide Libenzi <davidel@xmailserver.org> |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #if !defined(XMACROS_H) |
| 24 | #define XMACROS_H |
| 25 | |
| 26 | |
| 27 | |
| 28 | |
| 29 | #define XDL_MIN(a, b) ((a) < (b) ? (a): (b)) |
| 30 | #define XDL_MAX(a, b) ((a) > (b) ? (a): (b)) |
| 31 | #define XDL_ABS(v) ((v) >= 0 ? (v): -(v)) |
| 32 | #define XDL_ISDIGIT(c) ((c) >= '0' && (c) <= '9') |
| 33 | #define XDL_ISSPACE(c) (isspace((unsigned char)(c))) |
| 34 | #define XDL_ADDBITS(v,b) ((v) + ((v) >> (b))) |
| 35 | #define XDL_MASKBITS(b) ((1UL << (b)) - 1) |
| 36 | #define XDL_HASHLONG(v,b) (XDL_ADDBITS((unsigned long)(v), b) & XDL_MASKBITS(b)) |
| Bram Moolenaar | e828b76 | 2018-09-10 17:51:58 +0200 | [diff] [blame] | 37 | #define XDL_LE32_PUT(p, v) \ |
| 38 | do { \ |
| 39 | unsigned char *__p = (unsigned char *) (p); \ |
| 40 | *__p++ = (unsigned char) (v); \ |
| 41 | *__p++ = (unsigned char) ((v) >> 8); \ |
| 42 | *__p++ = (unsigned char) ((v) >> 16); \ |
| 43 | *__p = (unsigned char) ((v) >> 24); \ |
| 44 | } while (0) |
| 45 | #define XDL_LE32_GET(p, v) \ |
| 46 | do { \ |
| 47 | unsigned char const *__p = (unsigned char const *) (p); \ |
| 48 | (v) = (unsigned long) __p[0] | ((unsigned long) __p[1]) << 8 | \ |
| 49 | ((unsigned long) __p[2]) << 16 | ((unsigned long) __p[3]) << 24; \ |
| 50 | } while (0) |
| 51 | |
| Yee Cheng Chin | 5fedb8a | 2023-03-20 17:30:52 +0000 | [diff] [blame] | 52 | /* Allocate an array of nr elements, returns NULL on failure */ |
| 53 | #define XDL_ALLOC_ARRAY(p, nr) \ |
| 54 | ((p) = SIZE_MAX / sizeof(*(p)) >= (size_t)(nr) \ |
| 55 | ? xdl_malloc((nr) * sizeof(*(p))) \ |
| 56 | : NULL) |
| 57 | |
| 58 | /* Allocate an array of nr zeroed out elements, returns NULL on failure */ |
| 59 | #define XDL_CALLOC_ARRAY(p, nr) ((p) = xdl_calloc(nr, sizeof(*(p)))) |
| 60 | |
| 61 | /* |
| 62 | * Ensure array p can accommodate at least nr elements, growing the |
| 63 | * array and updating alloc (which is the number of allocated |
| 64 | * elements) as necessary. Frees p and returns -1 on failure, returns |
| 65 | * 0 on success |
| 66 | */ |
| 67 | #define XDL_ALLOC_GROW(p, nr, alloc) \ |
| 68 | (-!((nr) <= (alloc) || \ |
| 69 | ((p) = xdl_alloc_grow_helper((p), (nr), &(alloc), sizeof(*(p)))))) |
| Bram Moolenaar | e828b76 | 2018-09-10 17:51:58 +0200 | [diff] [blame] | 70 | |
| Christian Brabandt | ba02e47 | 2021-08-31 20:46:39 +0200 | [diff] [blame] | 71 | #endif /* #if !defined(XMACROS_H) */ |