E.V.E
v2023.02.15
 
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◆ manhattan

auto eve::manhattan = functor<manhattan_t>
inlineconstexpr

Header file

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
// Regular overloads
constexpr auto manhattan(value auto x, value auto ... xs) noexcept; // 1
constexpr auto manhattan(kumi::non_empty_product_type auto const& tup) noexcept; // 2
// Lanes masking
constexpr auto manhattan[conditional_expr auto c](/*any of the above overloads*/) noexcept; // 3
constexpr auto manhattan[logical_value auto m](/*any of the above overloads*/) noexcept; // 3
// Semantic options
constexpr auto manhattan[saturated](/*any of the above overloads*/) noexcept; // 4
constexpr auto manhattan[pedantic](/*any of the above overloads*/) noexcept; // 5
}
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 manhattan
tuple_callable object computing the manhattan norm ( ) of its arguments.
Definition manhattan.hpp:88
EVE Main Namespace.
Definition abi.hpp:18

Parameters

Return value

  1. The value of the sum of the absolute value of the arguments is returned.
  2. equivalent to the call on the elements of the tuple.
  3. The operation is performed conditionnaly
  4. internally uses saturated options.
  5. returns \(\infty\) as soon as one of its parameter is infinite, regardless of possible Nan values.

Example

// revision 0
#include <eve/module/core.hpp>
#include <iostream>
#include <iomanip>
int main()
{
eve::wide wf0{0.01, 1.01, 2.01, 3.01, -1.01, -2.01, -3.01, -4.01};
eve::wide wf1{0.01, -4.01, 1.01, -1.01, 2.01, -2.01, 3.01, -3.01};
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 << "-> manhattan(wf0, wf1) = " << eve::manhattan(wf0, wf1) << "\n";
std::cout << "-> manhattan[ignore_last(2)](wf0, wf1) = " << eve::manhattan[eve::ignore_last(2)](wf0, wf1) << "\n";
std::cout << "-> manhattan[wf0 != 0](wf0, wf1) = " << eve::manhattan[wf0 != 0](wf0, wf1) << "\n";
std::cout << "-> manhattan[pedantic](wf0, wf1) = " << eve::manhattan[eve::pedantic](wf0, wf1) << "\n";
std::cout << "-> manhattan(wu0, wu1) = " << eve::manhattan(wu0, wu1) << "\n";
std::cout << "-> manhattan(wi0, wi1) = " << eve::manhattan(wi0, wi1) << "\n";
std::cout << std::hexfloat;
std::cout << "-> manhattan[lower][strict](wf0, wf1) = " << eve::manhattan[eve::lower][eve::strict](wf0, wf1) << "\n";
std::cout << "-> manhattan[lower](wf0, wf1) = " << eve::manhattan[eve::lower](wf0, wf1) << "\n";
std::cout << "-> manhattan(wf0, wf1) = " << eve::manhattan(wf0, wf1) << "\n";
std::cout << "-> manhattan[upper](wf0, wf1) = " << eve::manhattan[eve::upper](wf0, wf1) << "\n";
std::cout << "-> manhattan[upper][strict](wf0, wf1) = " << eve::manhattan[eve::upper][eve::strict](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