LCOV - code coverage report
Current view: directory - gfx/cairo/cairo/src - cairo-slope-private.h (source / functions) Found Hit Coverage
Test: app.info Lines: 8 6 75.0 %
Date: 2012-06-02 Functions: 3 2 66.7 %

       1                 : /* cairo - a vector graphics library with display and print output
       2                 :  *
       3                 :  * Copyright © 2002 University of Southern California
       4                 :  * Copyright © 2005 Red Hat, Inc.
       5                 :  *
       6                 :  * This library is free software; you can redistribute it and/or
       7                 :  * modify it either under the terms of the GNU Lesser General Public
       8                 :  * License version 2.1 as published by the Free Software Foundation
       9                 :  * (the "LGPL") or, at your option, under the terms of the Mozilla
      10                 :  * Public License Version 1.1 (the "MPL"). If you do not alter this
      11                 :  * notice, a recipient may use your version of this file under either
      12                 :  * the MPL or the LGPL.
      13                 :  *
      14                 :  * You should have received a copy of the LGPL along with this library
      15                 :  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
      16                 :  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
      17                 :  * You should have received a copy of the MPL along with this library
      18                 :  * in the file COPYING-MPL-1.1
      19                 :  *
      20                 :  * The contents of this file are subject to the Mozilla Public License
      21                 :  * Version 1.1 (the "License"); you may not use this file except in
      22                 :  * compliance with the License. You may obtain a copy of the License at
      23                 :  * http://www.mozilla.org/MPL/
      24                 :  *
      25                 :  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
      26                 :  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
      27                 :  * the specific language governing rights and limitations.
      28                 :  *
      29                 :  * The Original Code is the cairo graphics library.
      30                 :  *
      31                 :  * The Initial Developer of the Original Code is University of Southern
      32                 :  * California.
      33                 :  *
      34                 :  * Contributor(s):
      35                 :  *      Carl D. Worth <cworth@cworth.org>
      36                 :  */
      37                 : 
      38                 : #ifndef _CAIRO_SLOPE_PRIVATE_H
      39                 : #define _CAIRO_SLOPE_PRIVATE_H
      40                 : 
      41                 : #include "cairo-types-private.h"
      42                 : #include "cairo-fixed-private.h"
      43                 : 
      44                 : static inline void
      45              84 : _cairo_slope_init (cairo_slope_t *slope,
      46                 :                    const cairo_point_t *a,
      47                 :                    const cairo_point_t *b)
      48                 : {
      49              84 :     slope->dx = b->x - a->x;
      50              84 :     slope->dy = b->y - a->y;
      51              84 : }
      52                 : 
      53                 : static inline cairo_bool_t
      54              42 : _cairo_slope_equal (const cairo_slope_t *a, const cairo_slope_t *b)
      55                 : {
      56              42 :     return _cairo_int64_eq (_cairo_int32x32_64_mul (a->dy, b->dx),
      57                 :                             _cairo_int32x32_64_mul (b->dy, a->dx));
      58                 : }
      59                 : 
      60                 : static inline cairo_bool_t
      61               0 : _cairo_slope_backwards (const cairo_slope_t *a, const cairo_slope_t *b)
      62                 : {
      63               0 :     return _cairo_int64_negative (_cairo_int64_add (_cairo_int32x32_64_mul (a->dx, b->dx),
      64                 :                                                     _cairo_int32x32_64_mul (a->dy, b->dy)));
      65                 : }
      66                 : 
      67                 : cairo_private int
      68                 : _cairo_slope_compare (const cairo_slope_t *a,
      69                 :                       const cairo_slope_t *b) cairo_pure;
      70                 : 
      71                 : 
      72                 : #endif /* _CAIRO_SLOPE_PRIVATE_H */

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