From 35a96bde514a8897f6f0fcc41c5833bf63df2e2a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:29:01 +0200 Subject: Adding upstream version 1.0.2. Signed-off-by: Daniel Baumann --- src/mod360.cpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 src/mod360.cpp (limited to 'src/mod360.cpp') diff --git a/src/mod360.cpp b/src/mod360.cpp new file mode 100644 index 0000000..182022d --- /dev/null +++ b/src/mod360.cpp @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** @file + * TODO: insert short description here + *//* + * Authors: see git history + * + * Copyright (C) 2018 Authors + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ +#include +#include + +#include "mod360.h" + +/** Returns \a x wrapped around to between 0 and less than 360, + or 0 if \a x isn't finite. +**/ +double mod360(double const x) +{ + double const m = fmod(x, 360.0); + double const ret = ( std::isnan(m) + ? 0.0 + : ( m < 0 + ? m + 360 + : m ) ); + g_return_val_if_fail(0.0 <= ret && ret < 360.0, + 0.0); + return ret; +} + +/** Returns \a x wrapped around to between -180 and less than 180, + or 0 if \a x isn't finite. +**/ +double mod360symm(double const x) +{ + double m = mod360(x); + + return m < 180.0 ? m : m - 360.0; +} + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : -- cgit v1.2.3