1bea8e1eac
-Added LocalVector (needed it) -Added stb_rect_pack (It's pretty cool, we could probably use it for other stuff too) -Fixes and changes all around the place -Added library for 128 bits fixed point (required for Delaunay3D)
79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
// ======================================================================== //
|
|
// Copyright 2009-2019 Intel Corporation //
|
|
// //
|
|
// Licensed under the Apache License, Version 2.0 (the "License"); //
|
|
// you may not use this file except in compliance with the License. //
|
|
// You may obtain a copy of the License at //
|
|
// //
|
|
// http://www.apache.org/licenses/LICENSE-2.0 //
|
|
// //
|
|
// Unless required by applicable law or agreed to in writing, software //
|
|
// distributed under the License is distributed on an "AS IS" BASIS, //
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
|
|
// See the License for the specific language governing permissions and //
|
|
// limitations under the License. //
|
|
// ======================================================================== //
|
|
|
|
#pragma once
|
|
|
|
#include "common/platform.h"
|
|
|
|
namespace oidn {
|
|
|
|
constexpr float minVectorLength = 1e-10f;
|
|
constexpr float minVectorLengthSqr = minVectorLength * minVectorLength;
|
|
|
|
using std::log;
|
|
using std::log2;
|
|
using std::exp;
|
|
using std::exp2;
|
|
using std::pow;
|
|
using std::isfinite;
|
|
using std::isnan;
|
|
|
|
__forceinline float sqr(float x)
|
|
{
|
|
return x * x;
|
|
}
|
|
|
|
__forceinline float rcp(float x)
|
|
{
|
|
__m128 r = _mm_rcp_ss(_mm_set_ss(x));
|
|
return _mm_cvtss_f32(_mm_sub_ss(_mm_add_ss(r, r), _mm_mul_ss(_mm_mul_ss(r, r), _mm_set_ss(x))));
|
|
}
|
|
|
|
__forceinline float rsqrt(float x)
|
|
{
|
|
__m128 r = _mm_rsqrt_ss(_mm_set_ss(x));
|
|
return _mm_cvtss_f32(_mm_add_ss(_mm_mul_ss(_mm_set_ss(1.5f), r),
|
|
_mm_mul_ss(_mm_mul_ss(_mm_mul_ss(_mm_set_ss(x), _mm_set_ss(-0.5f)), r), _mm_mul_ss(r, r))));
|
|
}
|
|
|
|
__forceinline float maxSafe(float value, float minValue)
|
|
{
|
|
return isfinite(value) ? max(value, minValue) : minValue;
|
|
}
|
|
|
|
__forceinline float clampSafe(float value, float minValue, float maxValue)
|
|
{
|
|
return isfinite(value) ? clamp(value, minValue, maxValue) : minValue;
|
|
}
|
|
|
|
// Returns ceil(a / b) for non-negative integers
|
|
template<class Int>
|
|
__forceinline constexpr Int ceilDiv(Int a, Int b)
|
|
{
|
|
//assert(a >= 0);
|
|
//assert(b > 0);
|
|
return (a + b - 1) / b;
|
|
}
|
|
|
|
// Returns a rounded up to multiple of b
|
|
template<class Int>
|
|
__forceinline constexpr Int roundUp(Int a, Int b)
|
|
{
|
|
return ceilDiv(a, b) * b;
|
|
}
|
|
|
|
} // namespace oidn
|