all

eve::all = {}

inlineconstexpr

Computes a bool value which is true if and only if all elements of x are not zero.

Defined in Header

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
   template< eve::value T >
   bool all(eve::as_logical<T> x) noexcept;  //1
 
   template< eve::top_bits M >
   bool all(M m) noexcept;                   //2
}

1. A bool value which is true if and only if all elements of x are not zero. 2 A bool value which is true if and only if all top bits elements of x are not zero.

Parameters

• x : argument.
• m : argument.

Return value

A bool value.

Example

#include <eve/wide.hpp>
#include <iostream>
 
using wide_ft = eve::wide<float, eve::fixed<4>>;
using wide_it = eve::wide<std::int16_t, eve::fixed<4>>;
 
int main()
{
  wide_ft pf = {-1.0f, 0.0f, -3.0f, -32768.0f};
  wide_it qi = {-1.0f, 2.0f, -3.0f, -32768.0f};
 
  std::cout << "---- simd" << '\n'
            << "<- pf       = " << pf << '\n'
            << "-> all(pf)  = " << eve::all(pf) << '\n'
            << "<- qi       = " << qi << '\n'
            << "-> all(qi)  = " << eve::all(qi) << '\n';
 
  float        xf = -0.0f;
  float        yf = -3.0f;
 
  std::cout << "---- scalar" << '\n'
            << "<- xf      = " << xf << '\n'
            << "-> all(xf) = " << eve::all(xf) << '\n'
            << "<- yf      = " << yf << '\n'
            << "-> all(yf) = " << eve::all(yf) << '\n';
  return 0;
}

Semantic Modifiers

• Masked Call

  The call eve::all[mask](x) provides a masked version of all which is equivalent to : all not masked elements are not zero.

  Example

#include <eve/module/core.hpp>
#include <eve/wide.hpp>
#include <iostream>
 
using wide_ft = eve::wide<float, eve::fixed<4>>;
 
int main()
{
  wide_ft pf = {0.0f, 1.0f, 3.0f, 32768.0f};
  std::cout << "---- simd" << '\n'
            << "<- pf       = " << pf << '\n'
            << "-> all[ignore_first(1)](pf > 0.5f)  = " << eve::all[eve::ignore_first(1)](pf > 0.5) << '\n';
 
  return 0;
}