/usr/include/colord-1/colorhug/ch-math.h is in libcolorhug-dev 1.2.12-1ubuntu1.
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 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2011 Richard Hughes <richard@hughsie.com>
*
* Licensed under the GNU General Public License Version 2
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#if !defined (__COLORHUG_H_INSIDE__) && !defined (CH_COMPILATION)
#error "Only <colorhug.h> can be included directly."
#endif
#ifndef __CH_MATH_H
#define __CH_MATH_H
#include <glib.h>
#include "ch-common.h"
G_BEGIN_DECLS
/* a 32 bit struct to hold numbers from the range -32767 to +32768
* with a precision of at least 0.000015 */
typedef union {
struct {
guint8 bytes[4];
};
struct {
guint16 fraction;
gint16 offset;
};
struct {
gint32 raw;
};
} ChPackedFloat;
gint32 ch_packed_float_get_value (const ChPackedFloat *pf);
void ch_packed_float_set_value (ChPackedFloat *pf,
const gint32 value);
void ch_packed_float_to_double (const ChPackedFloat *pf,
gdouble *value);
void ch_double_to_packed_float (gdouble value,
ChPackedFloat *pf);
ChError ch_packed_float_add (const ChPackedFloat *pf1,
const ChPackedFloat *pf2,
ChPackedFloat *result);
ChError ch_packed_float_multiply (const ChPackedFloat *pf1,
const ChPackedFloat *pf2,
ChPackedFloat *result);
G_END_DECLS
#endif /* __CH_MATH_H */
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