sqrteps

eve::sqrteps = functor<sqrteps_t>

inlineconstexpr

Defined in Header

#include <eve/module/core.hpp>

Callable Signatures

namespace eve
{
  template<eve::floating_value T> constexpr T sqrteps(as<T> x) noexcept;
}

Parameters

• x : Type wrapper instance embedding the type of the constant.

Return value

The call eve::sqrteps(as<T>()) is semantically equivalent to eve::sqrt (eve::eps (as<T>()))

Example

#include <eve/module/core.hpp>
#include <eve/wide.hpp>
#include <iostream>
#include <iomanip>
 
using wide_ft = eve::wide<float>;
 
template<typename T>
consteval auto constexpr_sqrteps() { return eve::sqrteps(eve::as<T>{}); }
 
int main()
{
  wide_ft wxf;
 
  std::cout << "---- simd"  << std::setprecision(9) << std::endl
            << "-> sqrteps(as<wide_ft>())              = " << eve::sqrteps(eve::as<wide_ft>()) << std::endl
            << "-> sqrteps(as(wxf))                    = " << eve::sqrteps(eve::as(wxf))       << std::endl
            << "-> sqrteps[upper](as(wxf))            = " << eve::sqrteps[eve::upper](eve::as(wxf))       << std::endl
            << "-> sqrt(double(eve::eps(as<float>()))) =  " << eve::sqrt(double(eve::eps(eve::as<float>()))) << std::endl
            << "-> sqrteps[lower](as(wxf))          = " << eve::sqrteps[eve::lower](eve::as(wxf))    << std::endl;
 
  double       xf;
 
  std::cout << "---- scalar" << std::endl
            << "-> sqrteps(as<float>())         = " << eve::sqrteps(eve::as(float())) << std::endl
            << "-> sqrteps(as<xf))              = " << eve::sqrteps(eve::as(xf)) << std::endl;
 
  std::cout << "-> constexpr sqrteps            = " << constexpr_sqrteps<float>() << std::endl;
 
  return 0;
}