srfm::simd Namespace Reference

Namespaces
namespace	detail

Classes
class	BetaCalculator
	Stateful wrapper around computeBetaBatch / computeGammaBatch. More...
struct	SimdGammaCompute
	Internal factory helper for constructing LorentzFactor objects from pre-computed gamma scalars (friend of LorentzFactor). More...

Enumerations
enum class	SimdLevel : std::uint8_t { SCALAR = 0 , SSE42 = 1 , AVX2 = 2 , AVX512F = 3 }
	Ordered enumeration of SIMD capability tiers. More...

Functions
std::vector< srfm::momentum::BetaVelocity >	computeBetaBatch (const std::vector< double > &velocities, double &running_max) noexcept
std::vector< srfm::momentum::LorentzFactor >	computeGammaBatch (const std::vector< srfm::momentum::BetaVelocity > &betas) noexcept
	Compute γ_i = 1/√(1 − β_i²) for every element.
SimdLevel	detect_simd_level () noexcept
bool	has_avx512f () noexcept
	Returns true when AVX-512F is available on this CPU/OS.
bool	has_avx2 () noexcept
	Returns true when AVX2 is available on this CPU/OS.
bool	has_sse42 () noexcept
	Returns true when SSE 4.2 is available on this CPU/OS.
const char *	simd_level_name (SimdLevel level) noexcept
	Human-readable name for a SimdLevel value.

Enumeration Type Documentation

SimdLevel

enum class srfm::simd::SimdLevel : std::uint8_t

strong

Ordered enumeration of SIMD capability tiers.

Compare with < / <= to check "at least this level":

if (detect_simd_level() >= SimdLevel::AVX2) { ... }

Enumerator
SCALAR	No SIMD; pure scalar C++ path.
SSE42	SSE 4.2 — 128-bit; 2 doubles per YMM half.
AVX2	AVX2 — 256-bit; 4 doubles per YMM register.
AVX512F	AVX-512F — 512-bit; 8 doubles per ZMM register.

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/cpu_features.hpp, and /home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/simd_dispatch.hpp.

Definition at line 59 of file cpu_features.hpp.

Function Documentation

computeBetaBatch()

std::vector< srfm::momentum::BetaVelocity > srfm::simd::computeBetaBatch ( const std::vector< double > &  velocities, double &  running_max  )

noexcept

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/simd_dispatch.hpp.

Definition at line 84 of file simd_dispatch.cpp.

computeGammaBatch()

std::vector< srfm::momentum::LorentzFactor > srfm::simd::computeGammaBatch ( const std::vector< srfm::momentum::BetaVelocity > &  betas )

noexcept

Compute γ_i = 1/√(1 − β_i²) for every element.

Inputs are clamped to [0, BETA_MAX_SAFE) before the sqrt to prevent NaN. SIMD kernel processes 8 (AVX-512) or 4 (AVX2) elements per cycle.

Parameters

betas

Validated BetaVelocity values from computeBetaBatch().

Returns

One LorentzFactor per input beta, in order. Empty vector when betas is empty.

Panics

This function never panics.

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/simd_dispatch.hpp.

Definition at line 119 of file simd_dispatch.cpp.

detect_simd_level()

SimdLevel srfm::simd::detect_simd_level ( )

inlinenoexcept

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/cpu_features.hpp.

Definition at line 153 of file cpu_features.hpp.

has_avx2()

bool srfm::simd::has_avx2 ( )

inlinenoexcept

Returns true when AVX2 is available on this CPU/OS.

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/cpu_features.hpp.

Definition at line 194 of file cpu_features.hpp.

has_avx512f()

bool srfm::simd::has_avx512f ( )

inlinenoexcept

Returns true when AVX-512F is available on this CPU/OS.

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/cpu_features.hpp.

Definition at line 189 of file cpu_features.hpp.

has_sse42()

bool srfm::simd::has_sse42 ( )

inlinenoexcept

Returns true when SSE 4.2 is available on this CPU/OS.

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/cpu_features.hpp.

Definition at line 199 of file cpu_features.hpp.

simd_level_name()

const char * srfm::simd::simd_level_name ( SimdLevel  level )

inlinenoexcept

Human-readable name for a SimdLevel value.

Examples

/home/runner/work/Special-Relativity-in-Financial-Modeling/Special-Relativity-in-Financial-Modeling/include/srfm/simd/cpu_features.hpp.

Definition at line 204 of file cpu_features.hpp.