E.V.E
v2023.02.15
 
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◆ reldist

auto eve::reldist = functor<reldist_t>
inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
// Regular overloads
constexpr auto reldist(floating_value auto x, floating_value auto y) noexcept; // 1
// Lanes masking
constexpr auto reldist[conditional_expr auto c](floating_value auto x, floating_value auto y) noexcept; // 2
constexpr auto reldist[logical_value auto m](floating_value auto x, floating_value auto y) noexcept; // 2
// Semantic options
constexpr auto reldist[pedantic](floating_value auto x, floating_value auto y) noexcept; // 4
}
Specifies that a type is a Conditional Expression.
Definition conditional.hpp:28
The concept floating_value<T> is satisfied if and only if T satisfies eve::value and the element type...
Definition value.hpp:116
The concept logical_value<T> is satisfied if and only if T satisfies eve::value and the element type ...
Definition value.hpp:132
constexpr auto reldist
elementwise_callable object computing the relative distance of its arguments.
Definition reldist.hpp:76
EVE Main Namespace.
Definition abi.hpp:18

Parameters

Return value

  1. The value of the relative distance of the arguments is returned, i.e. eve::abs(x-y)/max(abs(x), abs(y), 1).
  2. The operation is performed conditionnaly.
  3. reldist[pedantic](x, y) computes a distance wich is NaN if and only if one of the parameters is NaN.

Example

// revision 0
#include <eve/module/core.hpp>
#include <iostream>
int main()
{
eve::wide wf0{0.0, 1.0, 2.0, 3.0, -1.0, -2.0, -3.0, -4.0};
eve::wide wf1{0.0, -4.0, 1.0, -1.0, 2.0, -2.0, 3.0, -3.0};
std::cout << "<- wf0 = " << wf0 << "\n";
std::cout << "<- wf1 = " << wf1 << "\n";
std::cout << "-> reldist(wf0, wf1) = " << eve::reldist(wf0, wf1) << "\n";
std::cout << "-> reldist[ignore_last(2)](wf0, wf1) = " << eve::reldist[eve::ignore_last(2)](wf0, wf1) << "\n";
std::cout << "-> reldist[wf0 != 0](wf0, wf1) = " << eve::reldist[wf0 != 0](wf0, wf1) << "\n";
std::cout << "-> reldist[pedantic](wf0, wf1) = " << eve::reldist[eve::pedantic](wf0, wf1) << "\n";
}
Conditional expression ignoring the k last lanes from a eve::simd_value.
Definition conditional.hpp:332
Wrapper for SIMD registers.
Definition wide.hpp:70