164 lines
4.3 KiB
C
164 lines
4.3 KiB
C
/*
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* Copyright (C) 2007,2008,2009 Red Hat, Inc.
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*
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* This is part of HarfBuzz, an OpenType Layout engine library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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*/
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#ifndef HB_PRIVATE_H
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#define HB_PRIVATE_H
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h> /* XXX */
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#include <string.h>
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#include <assert.h>
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#include "hb-common.h"
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/* Basics */
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#undef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#ifndef HB_INTERNAL
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# define HB_INTERNAL
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#endif
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#ifndef NULL
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# define NULL ((void *)0)
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#endif
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#ifndef FALSE
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# define FALSE 0
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#endif
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#ifndef TRUE
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# define TRUE 1
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#endif
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#define HB_STMT_START do
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#define HB_STMT_END while (0)
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#define _ASSERT_STATIC1(_line, _cond) typedef int _static_assert_on_line_##_line##_failed[(_cond)?1:-1]
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#define _ASSERT_STATIC0(_line, _cond) _ASSERT_STATIC1 (_line, (_cond))
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#define ASSERT_STATIC(_cond) _ASSERT_STATIC0 (__LINE__, (_cond))
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#define ASSERT_SIZE(_type, _size) ASSERT_STATIC (sizeof (_type) == (_size))
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#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
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#define _CAIRO_BOOLEAN_EXPR(expr) \
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__extension__ ({ \
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int _cairo_boolean_var_; \
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if (expr) \
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_cairo_boolean_var_ = 1; \
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else \
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_cairo_boolean_var_ = 0; \
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_cairo_boolean_var_; \
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})
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#define HB_LIKELY(expr) (__builtin_expect (_CAIRO_BOOLEAN_EXPR(expr), 1))
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#define HB_UNLIKELY(expr) (__builtin_expect (_CAIRO_BOOLEAN_EXPR(expr), 0))
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#else
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#define HB_LIKELY(expr) (expr)
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#define HB_UNLIKELY(expr) (expr)
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#endif
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#ifndef __GNUC__
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#undef __attribute__
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#define __attribute__(x)
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#endif
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#if __GNUC__ >= 3
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#define HB_GNUC_UNUSED __attribute__((unused))
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#define HB_GNUC_PURE __attribute__((pure))
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#define HB_GNUC_CONST __attribute__((const))
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#else
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#define HB_GNUC_UNUSED
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#define HB_GNUC_PURE
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#define HB_GNUC_CONST
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#endif
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#if (defined(__WIN32__) && !defined(__WINE__)) || defined(_MSC_VER)
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#define snprintf _snprintf
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#endif
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#ifdef _MSC_VER
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#undef inline
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#define inline __inline
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#endif
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#ifdef __STRICT_ANSI__
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#undef inline
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#define inline __inline__
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#endif
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/* Return the number of 1 bits in mask.
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*
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* GCC 3.4 supports a "population count" builtin, which on many targets is
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* implemented with a single instruction. There is a fallback definition
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* in libgcc in case a target does not have one, which should be just as
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* good as the open-coded solution below, (which is "HACKMEM 169").
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*/
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static HB_GNUC_UNUSED inline unsigned int
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_hb_popcount32 (uint32_t mask)
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{
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#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
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return __builtin_popcount (mask);
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#else
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register int y;
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y = (mask >> 1) &033333333333;
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y = mask - y - ((y >>1) & 033333333333);
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return (((y + (y >> 3)) & 030707070707) % 077);
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#endif
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}
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static HB_GNUC_UNUSED inline uint16_t
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_hb_be_uint16 (uint16_t v)
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{
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return (v>>8) + (v<<8);
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}
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static HB_GNUC_UNUSED inline uint32_t
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_hb_be_uint32 (uint32_t v)
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{
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return _hb_be_uint16 (v>>16) + (_hb_be_uint16 (v) <<16);
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}
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/* Macros to convert to/from BigEndian */
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#define hb_be_uint8
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#define hb_be_int8
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#define hb_be_uint16(v) _hb_be_uint16 (v)
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#define hb_be_int16(v) ((int16_t) hb_be_uint16 (v))
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#define hb_be_uint32(v) _hb_be_uint32 (v)
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#define hb_be_int32(v) ((int32_t) hb_be_uint32 (v))
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#include "hb-object-private.h"
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#endif /* HB_PRIVATE_H */
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