/usr/include/tesseract/vecfuncs.h is in libtesseract-dev 3.02.01-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | /* -*-C-*-
********************************************************************************
*
* File: vecfuncs.h (Formerly vecfuncs.h)
* Description: Vector calculations
* Author: Mark Seaman, OCR Technology
* Created: Wed Dec 20 09:37:18 1989
* Modified: Tue Jul 9 17:44:37 1991 (Mark Seaman) marks@hpgrlt
* Language: C
* Package: N/A
* Status: Experimental (Do Not Distribute)
*
* (c) Copyright 1989, Hewlett-Packard Company.
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
** http://www.apache.org/licenses/LICENSE-2.0
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*
*********************************************************************************/
#ifndef VECFUNCS_H
#define VECFUNCS_H
#include <math.h>
#include "blobs.h"
class EDGEPT;
/*----------------------------------------------------------------------
M a c r o s
----------------------------------------------------------------------*/
/**********************************************************************
* point_diff
*
* Return the difference from point (p1) to point (p2). Put the value
* into point (p).
**********************************************************************/
#define point_diff(p,p1,p2) \
((p).x = (p1).x - (p2).x, \
(p).y = (p1).y - (p2).y, \
(p))
/**********************************************************************
* CROSS
*
* cross product
**********************************************************************/
#define CROSS(a,b) \
((a).x * (b).y - (a).y * (b).x)
/**********************************************************************
* SCALAR
*
* scalar vector product
**********************************************************************/
#define SCALAR(a,b) \
((a).x * (b).x + (a).y * (b).y)
/**********************************************************************
* LENGTH
*
* length of vector
**********************************************************************/
#define LENGTH(a) \
((a).x * (a).x + (a).y * (a).y)
/*----------------------------------------------------------------------
F u n c t i o n s
----------------------------------------------------------------------*/
int direction(EDGEPT *point);
#endif
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