61 Commits

Author SHA1 Message Date
Jordan Woyak
da546bebb8 MathUtil: Simplify SaturatingCast implementation with std::cmp_less/cmp_greater and fix a floating point edge case.
Thanks to Dentomologist for catching the edge case.
2025-08-27 21:24:46 -05:00
Lioncash
784a216927 Common/MathUtil: Move IntLog2 into MathUtil namespace
Gets this out of the global namespace.
2023-04-15 03:35:05 -04:00
Lioncash
5e0c20f8a5 Common/MathUtil: Remove MathFloatVectorSum()
This isn't used anywhere and not really a generic utility, so we can get
rid of it.

This also lets us remove MathUtil.cpp, since this was the only thing
within that file.
2023-04-15 03:25:38 -04:00
Minty-Meeo
05bebee802 Replace BitUtils with C++20: Counting Zeroes
With the upgrade to C++20, std::countl_zero and std::countr_zero can replace these home-spun implementations from the BitUtil.h library.
2022-12-21 04:17:00 -06:00
Pokechu22
15f80f7234 MathUtil: Mark lo in SaturatingCast as [[maybe_unused]]
It's unused in the case that T is unsigned and dest is signed (e.g. SaturatingCast<int, size_t> which appears SetIsoPaths in MainSettings.cpp)
2022-02-13 14:38:59 -08:00
Léo Lam
b82b0683d5 MathUtil: Mark IntLog2 as constexpr
Mostly everything else was already marked as constexpr, and the only
function IntLog2 calls (CountLeadingZeros) is already constexpr.
2021-07-06 15:01:38 +02:00
Pierre Bourdon
e149ad4f0a treewide: convert GPLv2+ license info to SPDX tags
SPDX standardizes how source code conveys its copyright and licensing
information. See https://spdx.github.io/spdx-spec/1-rationale/ . SPDX
tags are adopted in many large projects, including things like the Linux
kernel.
2021-07-05 04:35:56 +02:00
Léo Lam
48712168b8 MathUtil: Add SaturatingCast to cast floats more safely 2021-04-06 23:27:23 +02:00
MerryMage
d695fcb126 BitUtils: Add CountLeadingZeros 2020-12-27 22:56:43 +00:00
Jordan Woyak
1063c4e940 MathUtil: Add Population (vs Sample) versions of Variance and StandardDeviation to RunningVariance. 2020-09-28 18:09:33 -05:00
Léo Lam
07ab79db64 MathUtil: Fix Rectangle::GetWidth/Height for unsigned types
`std::abs(x - y)` where x and y are unsigned integers fails to compile
with an "call of overloaded 'abs(unsigned int)' is ambiguous" error
on GCC, and even if it did compile, that expression still wouldn't
give the correct result since `x - y` is unsigned.
2020-05-03 14:41:58 +02:00
Jordan Woyak
9efcd08ea3 MathUtil: Add RunningMean/RunningVariance classes. 2020-02-17 15:57:43 -06:00
Jordan Woyak
4f47cccd9f Cleanup: Use std::abs instead of abs. 2020-02-08 18:21:14 -06:00
Jordan Woyak
1180c231a6 InputCommon: Detect when evdev exposes acceleration/gyroscope data. 2019-11-09 13:34:29 -06:00
Léo Lam
ab9ece9bca Replace MathUtil::Clamp with std::clamp 2019-05-04 23:12:17 +02:00
Jordan Woyak
ba1b335118 WiimoteEmu: Improve emulated swing. 2019-04-23 19:02:41 -05:00
Jordan Woyak
b9a00a40a9 Common: Move Matrix classes out of MathUtil into their own files and make their interface more friendly. 2019-02-03 11:35:31 -06:00
Jordan Woyak
ceb28a2302 Add ability to reshape analog sticks from square/circle to octagon and make the analog stick mapping indicator pretty. 2018-12-27 18:31:46 -06:00
Lioncash
ba01f6dba3 CommonFuncs: Convert ROUND_UP_POW2 macro to a function
Also move it to MathUtils where it belongs with the rest of the
power-of-two functions. This gets rid of pollution of the current scope
of any translation unit with b<value> macros that aren't intended to be
used directly.
2018-05-10 19:42:20 -04:00
Lioncash
86018b503b Common: Move floating-point utility functions to FloatUtils.h/.cpp
Keeps all of the floating-point utility functions in their own file to
keep them all together. This also provides a place for other
general-purpose floating-point functions to be added in the future,
which will be necessary when improving the flag-setting within the
interpreter.
2018-05-07 02:56:32 -04:00
Lioncash
79f40fb8d7 MathUtil: Generify IsPow2
This will allow it to also be used in the AArch64 emitter.
2018-03-23 09:50:49 -04:00
Shawn Hoffman
e1a3e41bf3 fix various instances of -1 being assigned to unsigned types 2017-06-07 19:52:07 -07:00
MerryMage
f7ed979e30 Jit64AsmCommon: Make frsqrte and fres PIE-compliant 2017-04-11 20:25:18 +01:00
Florent Castelli
b69d3f13cb common: Don't include intrin.h in a namespace
Fixes compilation with VS2017
2017-03-08 06:55:06 +01:00
Phil Christensen
2ed61b0ee1 C++ conformance fixes (MSVC /permissive-)
We (the Microsoft C++ team) use the dolphin project as part of our "Real world code" tests.
I noticed a few issues in windows specific code when building dolphin with the MSVC compiler
in its conformance mode (/permissive-).  For more information on /permissive- see our blog
https://blogs.msdn.microsoft.com/vcblog/2016/11/16/permissive-switch/.

These changes are to address 3 different types of issues:

1) Use of qualified names in member declarations

    struct A {
        void A::f() { } // error C4596: illegal qualified name in member declaration
                        // remove redundant 'A::' to fix
    };

2) Binding a non-const reference to a temporary

    struct S{};
  
    // If arg is in 'in' parameter, then it should be made const.
    void func(S& arg){}
  
    int main() {
      //error C2664: 'void func(S &)': cannot convert argument 1 from 'S' to 'S &'
      //note: A non-const reference may only be bound to an lvalue
      func( S() );
   
      //Work around this by creating a local, and using it to call the function
      S s;
      func( s );
    }

3) Add missing #include <intrin.h>

Because of the workaround you are using in the code you will need to include
this.  This is because of changes in the libraries and not /permissive-
2017-02-15 20:37:04 -08:00