Conditional Expressions

Detailed Description

Masking lanes from an eve::simd_value is a frequent operations. To simplify and optimize such code, EVE provides objects and functions to define conditions with a high-level of flexibility including: alternative value, index-based relative conditions and more.

See also: Conditional operations

Classes
struct	eve::or_< C, V >
	Conditional/Alternative wrapper. More...
struct	eve::if_< C >
	Extensible wrapper for SIMD conditional. More...
struct	eve::ignore_all_
	Conditional expression selecting no lane from a eve::simd_value. More...
struct	eve::ignore_none_
	Conditional expression selecting all lanes from a eve::simd_value. More...
struct	eve::keep_first
	Conditional expression selecting the k first lanes from a eve::simd_value. More...
struct	eve::ignore_last
	Conditional expression ignoring the k last lanes from a eve::simd_value. More...
struct	eve::keep_last
	Conditional expression keeping the k last lanes from a eve::simd_value. More...
struct	eve::ignore_first
	Conditional expression ignoring the k first lanes from a eve::simd_value. More...
struct	eve::keep_between
	Conditional expression keeping all lanes between two position. More...
struct	eve::ignore_extrema
	Conditional expression ignoring lanes at both extrema of a eve::simd_value. More...

Functions
template<eve::relative_conditional_expr C>
constexpr auto	eve::drop_alternative (C c)
	Returns a conditional without an alternative.
template<eve::relative_conditional_expr C>
auto	eve::map_alternative (C c, auto op)
	Computes a transformed conditional.
template<eve::relative_conditional_expr C, typename T >
constexpr auto	eve::reverse_conditional (C c, eve::as< T > tgt)
	Computes the reverse of a given eve::relative_conditional_expr.

Variables
constexpr ignore_all_	eve::ignore_all = {}
	Object representing the eve::ignore_all_ conditional expression.
constexpr ignore_none_	eve::ignore_none = {}
	Object representing the eve::ignore_none_ conditional expression.