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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
commit | cca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch) | |
tree | 146f39ded1c938019e1ed42d30923c2ac9e86789 /src/mod360.cpp | |
parent | Initial commit. (diff) | |
download | inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.tar.xz inkscape-cca66b9ec4e494c1d919bff0f71a820d8afab1fa.zip |
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/mod360.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/mod360.cpp b/src/mod360.cpp new file mode 100644 index 0000000..381b716 --- /dev/null +++ b/src/mod360.cpp @@ -0,0 +1,51 @@ +// 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 <glib.h> +#include <cmath> + +#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 m = fmod(x, 360.0); + if (std::isnan(m)) { + m = 0.0; + } else if (m < 0) { + m += 360.0; + } + if (m < 0.0 || m >= 360.0) { + m = 0.0; + } + return m; +} + +/** 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 : |