xmacros.h (1901B)
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)) 37 #define XDL_PTRFREE(p) do { if (p) { xdl_free(p); (p) = NULL; } } while (0) 38 #define XDL_LE32_PUT(p, v) \ 39 do { \ 40 unsigned char *__p = (unsigned char *) (p); \ 41 *__p++ = (unsigned char) (v); \ 42 *__p++ = (unsigned char) ((v) >> 8); \ 43 *__p++ = (unsigned char) ((v) >> 16); \ 44 *__p = (unsigned char) ((v) >> 24); \ 45 } while (0) 46 #define XDL_LE32_GET(p, v) \ 47 do { \ 48 unsigned char const *__p = (unsigned char const *) (p); \ 49 (v) = (unsigned long) __p[0] | ((unsigned long) __p[1]) << 8 | \ 50 ((unsigned long) __p[2]) << 16 | ((unsigned long) __p[3]) << 24; \ 51 } while (0) 52 53 54 #endif /* #if !defined(XMACROS_H) */