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126bd9e1a4
This patch was generated automatically by the "modeline.py" script, available here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py For every file that is modified in this patch, the changes are as follows: (1) The patch changes the file to use the exact C++ mode lines from the Mozilla coding style guide, available here: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line (2) The patch deletes any blank lines between the mode line & the MPL boilerplate comment. (3) If the file previously had the mode lines and MPL boilerplate in a single contiguous C++ comment, then the patch splits them into separate C++ comments, to match the boilerplate in the coding style. MozReview-Commit-ID: 77D61xpSmIl --HG-- extra : rebase_source : c6162fa3cf539a07177a19838324bf368faa162b
45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_NUMERICTOOLS_H_
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#define MOZILLA_GFX_NUMERICTOOLS_H_
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namespace mozilla {
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// XXX - Move these into mfbt/MathAlgorithms.h?
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// Returns the largest multiple of aMultiplied that's <= x.
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// Same as int32_t(floor(double(x) / aMultiplier)) * aMultiplier,
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// but faster.
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inline int32_t
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RoundDownToMultiple(int32_t x, int32_t aMultiplier)
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{
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// We don't use float division + floor because that's hard for the compiler
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// to optimize.
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int mod = x % aMultiplier;
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if (x > 0) {
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return x - mod;
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}
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return mod ? x - aMultiplier - mod : x;
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}
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// Returns the smallest multiple of aMultiplied that's >= x.
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// Same as int32_t(ceil(double(x) / aMultiplier)) * aMultiplier,
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// but faster.
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inline int32_t
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RoundUpToMultiple(int32_t x, int32_t aMultiplier)
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{
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int mod = x % aMultiplier;
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if (x > 0) {
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return mod ? x + aMultiplier - mod : x;
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}
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return x - mod;
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}
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} // namespace mozilla
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#endif /* MOZILLA_GFX_NUMERICTOOLS_H_ */
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