2 * Copyright (C) 2007,2008,2009 Red Hat, Inc.
4 * This is part of HarfBuzz, an OpenType Layout engine library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Red Hat Author(s): Behdad Esfahbod
35 #include <stdio.h> /* XXX */
39 #include "hb-common.h"
43 /* Macros to convert to/from BigEndian */
46 #define hb_be_uint16 GUINT16_TO_BE
47 #define hb_be_int16 GINT16_TO_BE
48 #define hb_be_uint32 GUINT32_TO_BE
49 #define hb_be_int32 GINT32_TO_BE
50 #define hb_be_uint64 GUINT64_TO_BE
51 #define hb_be_int64 GINT64_TO_BE
56 #define MIN(a,b) ((a) < (b) ? (a) : (b))
63 # define NULL ((void *)0)
74 #define HB_STMT_START do
75 #define HB_STMT_END while (0)
77 #define _ASSERT_STATIC1(_line, _cond) typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
78 #define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
79 #define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
81 #define ASSERT_SIZE(_type, _size) ASSERT_STATIC (sizeof (_type) == (_size))
84 #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
85 #define _CAIRO_BOOLEAN_EXPR(expr) \
87 int _cairo_boolean_var_; \
89 _cairo_boolean_var_ = 1; \
91 _cairo_boolean_var_ = 0; \
92 _cairo_boolean_var_; \
94 #define HB_LIKELY(expr) (__builtin_expect (_CAIRO_BOOLEAN_EXPR(expr), 1))
95 #define HB_UNLIKELY(expr) (__builtin_expect (_CAIRO_BOOLEAN_EXPR(expr), 0))
97 #define HB_LIKELY(expr) (expr)
98 #define HB_UNLIKELY(expr) (expr)
103 #define __attribute__(x)
107 #define HB_GNUC_UNUSED __attribute__((unused))
108 #define HB_GNUC_PURE __attribute__((pure))
109 #define HB_GNUC_CONST __attribute__((const))
111 #define HB_GNUC_UNUSED
113 #define HB_GNUC_CONST
117 #if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
118 #define snprintf _snprintf
123 #define inline __inline
126 #ifdef __STRICT_ANSI__
128 #define inline __inline__
132 /* Return the number of 1 bits in mask.
134 * GCC 3.4 supports a "population count" builtin, which on many targets is
135 * implemented with a single instruction. There is a fallback definition
136 * in libgcc in case a target does not have one, which should be just as
137 * good as the open-coded solution below, (which is "HACKMEM 169").
139 static HB_GNUC_UNUSED inline unsigned int
140 _hb_popcount32 (uint32_t mask)
142 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
143 return __builtin_popcount (mask);
147 y = (mask >> 1) &033333333333;
148 y = mask - y - ((y >>1) & 033333333333);
149 return (((y + (y >> 3)) & 030707070707) % 077);
155 #include "hb-object-private.h"
157 #endif /* HB_PRIVATE_H */