/usr/include/libnoise/mathconsts.h is in libnoise-dev 1.0.0+repack-0+nmu1.1.
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 | // mathconsts.h
//
// Copyright (C) 2003, 2004 Jason Bevins
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or (at
// your option) any later version.
//
// This library 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 Lesser General Public
// License (COPYING.txt) for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this library; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// The developer's email is jlbezigvins@gmzigail.com (for great email, take
// off every 'zig'.)
//
#ifndef NOISE_MATHCONSTS_H
#define NOISE_MATHCONSTS_H
// For whatever reason, I can't find the basic math consts in the MSVC version
// of math.h.
namespace noise
{
/// @addtogroup libnoise
/// @{
/// Pi.
const double PI = 3.1415926535897932385;
/// Square root of 2.
const double SQRT_2 = 1.4142135623730950488;
/// Square root of 3.
const double SQRT_3 = 1.7320508075688772935;
/// Converts an angle from degrees to radians.
const double DEG_TO_RAD = PI / 180.0;
/// Converts an angle from radians to degrees.
const double RAD_TO_DEG = 1.0 / DEG_TO_RAD;
/// @}
}
#endif
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