fast_math.hpp File Reference

Scalar math helpers for real-time audio DSP. More...

#include <pulp/signal/denormal.hpp>
#include <algorithm>
#include <bit>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <type_traits>
#include <cmath>

Go to the source code of this file.

Classes
struct	pulp::signal::FastMath
	Math helpers optimized for audio DSP. More...

Namespaces
namespace	pulp
namespace	pulp::signal
namespace	pulp::signal::detail
	Round-2 effect-wave vocabulary.

Macros
#define	PULP_FAST_MATH_HAS_IEEE_MINMAX   0

Enumerations
enum class	pulp::signal::FastTrigProfile : std::uint8_t { pulp::signal::reference , pulp::signal::realtime_efficient , pulp::signal::realtime_precise }
	Semantic accuracy choices for bounded-cycle real-time trigonometry. More...
enum class	pulp::signal::LadderSaturation { pulp::signal::exact , pulp::signal::accurate , pulp::signal::realtime_efficient }
	Saturator choices for the Moog ladder's per-stage non-linearity. More...

Functions
template<auto Saturation> requires std::is_same_v<decltype(Saturation), LadderSaturation>
float	pulp::signal::ladder_tanh_profiled (float x)
	The ladder's float saturator for an explicit choice.
template<auto RealtimeEfficient> requires std::is_same_v<decltype(RealtimeEfficient), bool>
float	pulp::signal::ladder_tanh_profiled (float x)
	The previous boolean form: true is the Padé saturator, false is exact std::tanh, as before LadderSaturation existed.
float	pulp::signal::ladder_tanh (float x)
	The ladder's default float saturator.
double	pulp::signal::lipschitz_tanh (double v) noexcept
	A [3/2] Padé tanh that is 1-LIPSCHITZ and bounded — the saturator to reach for inside a feedback loop.
template<typename T>
T	pulp::signal::detail::select_bits (bool condition, T if_true, T if_false) noexcept
	condition ?
template<typename T>
T	pulp::signal::detail::snap_to_zero_bits (T x) noexcept
	snap_to_zero() as bit operations (see select_bits()).
float	pulp::signal::detail::tanh_accurate_bits (float x) noexcept
	FastMath::tanh_accurate() with its clamps as bit operations; the same value for every input.

Variables
constexpr LadderSaturation	pulp::signal::kDefaultLadderSaturation = LadderSaturation::accurate
	Selecting the default ladder saturator at build time:

Detailed Description

Scalar math helpers for real-time audio DSP.

Macro Definition Documentation

PULP_FAST_MATH_HAS_IEEE_MINMAX

#define PULP_FAST_MATH_HAS_IEEE_MINMAX   0