scalar_precision.hpp File Reference

Runtime selection of configured Uni20 real scalar precisions. More...

#include "types.hpp"
#include <uni20/config.hpp>
#include <array>
#include <optional>
#include <span>
#include <stdexcept>
#include <string_view>
#include <utility>

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Namespaces
namespace	uni20

Enumerations
enum class	uni20::ScalarPrecision { uni20::fp32 , uni20::fp64 , uni20::fp80 , uni20::fp128 }
	Runtime identifier for the real precision underlying a scalar type. More...

Functions
constexpr std::string_view	uni20::configured_scalar_precision_choices ()
	Return a compact choice list suitable for command-line help.
constexpr std::span< ScalarPrecision const >	uni20::configured_scalar_precisions ()
	Return the real scalar precisions configured in this build.
constexpr std::optional< ScalarPrecision >	uni20::parse_scalar_precision (std::string_view name)
	Parse a canonical scalar precision name independently of build availability.
constexpr bool	uni20::scalar_precision_is_available (ScalarPrecision precision)
	Report whether a runtime precision has a concrete scalar type in this build.
constexpr std::string_view	uni20::scalar_precision_name (ScalarPrecision precision)
	Return the canonical command-line and diagnostic spelling of a precision.
template<class Function >
decltype(auto)	uni20::visit_scalar_precision (ScalarPrecision precision, Function &&function)
	Invoke a templated callable with the concrete real scalar for a runtime precision.

Variables
constexpr bool	uni20::has_float128 = UNI20_HAS_FLOAT128 != 0
	Whether this build provides a concrete uni20::float128 type.
constexpr bool	uni20::has_float80 = UNI20_HAS_FLOAT80 != 0
	Whether this build provides native x87 extended precision as uni20::float80.

Detailed Description

Runtime selection of configured Uni20 real scalar precisions.