E.V.E
v2023.02.15
 
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◆ fdim

auto eve::fdim = functor<fdim_t>
inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
// Regular overloads
constexpr auto fdim(value auto x, value auto y) noexcept; // 1
// Lanes masking
constexpr auto fdim[conditional_expr auto c](value auto x, value auto y) noexcept; // 2
constexpr auto fdim[logical_value auto m](value auto x, value auto y) noexcept; // 2
}
Specifies that a type is a Conditional Expression.
Definition conditional.hpp:28
The concept logical_value<T> is satisfied if and only if T satisfies eve::value and the element type ...
Definition value.hpp:132
The concept value<T> is satisfied if and only if T satisfies either eve::scalar_value or eve::simd_va...
Definition value.hpp:34
constexpr auto fdim
elementwise_callable computing the positive difference between the two parameters.
Definition fdim.hpp:75
EVE Main Namespace.
Definition abi.hpp:18

Parameters

Return value

  1. Returns the positive difference between x and y:
    • if x>y, x-y is returned,
    • if x<=y, +0 is returned,
    • otherwise a Nan is returned.
  2. The operation is performed conditionnaly

External references

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};
eve::wide wi0{0, 1, 2, 3, -1, -2, -3, -4};
eve::wide wi1{0, -4, 1, -1, 2, -2, 3, -3};
eve::wide wu0{0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u};
eve::wide wu1{7u, 6u, 5u, 4u, 3u, 2u, 1u, 0u};
std::cout << "<- wf0 = " << wf0 << "\n";
std::cout << "<- wf1 = " << wf1 << "\n";
std::cout << "<- wi0 = " << wi0 << "\n";
std::cout << "<- wi1 = " << wi1 << "\n";
std::cout << "<- wu0 = " << wu0 << "\n";
std::cout << "<- wu1 = " << wu1 << "\n";
std::cout << "-> fdim(wf0, wf1) = " << eve::fdim(wf0, wf1) << "\n";
std::cout << "-> fdim[ignore_last(2)](wf0, wf1) = " << eve::fdim[eve::ignore_last(2)](wf0, wf1) << "\n";
std::cout << "-> fdim[wf0 != 0](wf0, wf1) = " << eve::fdim[wf0 != 0](wf0, wf1) << "\n";
std::cout << "-> fdim(wu0, wu1) = " << eve::fdim(wu0, wu1) << "\n";
std::cout << "-> fdim[ignore_last(2)](wu0, wu1) = " << eve::fdim[eve::ignore_last(2)](wu0, wu1) << "\n";
std::cout << "-> fdim[wu0 != 0](wu0, wu1) = " << eve::fdim[wu0 != 0](wu0, wu1) << "\n";
std::cout << "-> fdim(wi0, wi1) = " << eve::fdim(wi0, wi1) << "\n";
std::cout << "-> fdim[ignore_last(2)](wi0, wi1) = " << eve::fdim[eve::ignore_last(2)](wi0, wi1) << "\n";
std::cout << "-> fdim[wi0 != 0](wi0, wi1) = " << eve::fdim[wi0 != 0](wi0, wi1) << "\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