mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-21 23:20:20 +00:00
108 lines
2.5 KiB
C++
108 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Math.h>
|
|
#include <AK/SIMD.h>
|
|
#include <AK/SIMDExtras.h>
|
|
#include <math.h>
|
|
|
|
// Functions returning vectors or accepting vector arguments have different calling conventions
|
|
// depending on whether the target architecture supports SSE or not. GCC generates warning "psabi"
|
|
// when compiling for non-SSE architectures. We disable this warning because these functions
|
|
// are static and should never be visible from outside the translation unit that includes this header.
|
|
#pragma GCC diagnostic push
|
|
#pragma GCC diagnostic ignored "-Wpsabi"
|
|
|
|
namespace AK::SIMD {
|
|
|
|
// Functions ending in "_int_range" only accept arguments within range [INT_MIN, INT_MAX].
|
|
// Other inputs will generate unexpected results.
|
|
|
|
ALWAYS_INLINE static f32x4 truncate_int_range(f32x4 v)
|
|
{
|
|
return to_f32x4(to_i32x4(v));
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 floor_int_range(f32x4 v)
|
|
{
|
|
auto t = truncate_int_range(v);
|
|
return t > v ? t - 1.0f : t;
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 ceil_int_range(f32x4 v)
|
|
{
|
|
auto t = truncate_int_range(v);
|
|
return t < v ? t + 1.0f : t;
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 frac_int_range(f32x4 v)
|
|
{
|
|
return v - floor_int_range(v);
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 clamp(f32x4 v, f32x4 min, f32x4 max)
|
|
{
|
|
return v < min ? min : (v > max ? max : v);
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 clamp(f32x4 v, float min, float max)
|
|
{
|
|
return v < min ? min : (v > max ? max : v);
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 exp(f32x4 v)
|
|
{
|
|
// FIXME: This should be replaced with a vectorized algorithm instead of calling the scalar expf 4 times
|
|
return f32x4 {
|
|
expf(v[0]),
|
|
expf(v[1]),
|
|
expf(v[2]),
|
|
expf(v[3]),
|
|
};
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 exp_approximate(f32x4 v)
|
|
{
|
|
static constexpr int number_of_iterations = 10;
|
|
auto result = 1.f + v / (1 << number_of_iterations);
|
|
for (int i = 0; i < number_of_iterations; ++i)
|
|
result *= result;
|
|
return result;
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 sqrt(f32x4 v)
|
|
{
|
|
#if ARCH(X86_64)
|
|
return __builtin_ia32_sqrtps(v);
|
|
#else
|
|
return f32x4 {
|
|
AK::sqrt(v[0]),
|
|
AK::sqrt(v[1]),
|
|
AK::sqrt(v[2]),
|
|
AK::sqrt(v[3]),
|
|
};
|
|
#endif
|
|
}
|
|
|
|
ALWAYS_INLINE static f32x4 rsqrt(f32x4 v)
|
|
{
|
|
#if ARCH(X86_64)
|
|
return __builtin_ia32_rsqrtps(v);
|
|
#else
|
|
return f32x4 {
|
|
1.f / AK::sqrt(v[0]),
|
|
1.f / AK::sqrt(v[1]),
|
|
1.f / AK::sqrt(v[2]),
|
|
1.f / AK::sqrt(v[3]),
|
|
};
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
#pragma GCC diagnostic pop
|