E.V.E
v2023.02.15
 
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◆ erfc_inv

auto eve::erfc_inv = functor<erfc_inv_t>
inlineconstexpr

Header file

#include <eve/module/special.hpp>

Callable Signatures

namespace eve
{
// Regular overload
constexpr auto erfc_inv(floating_value auto x) noexcept; // 1
// Lanes masking
constexpr auto erfc_inv[conditional_expr auto c](floating_value auto x) noexcept; // 2
constexpr auto erfc_inv[logical_value auto m](floating_value auto x) noexcept; // 2
}
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 erfc_inv
Computes the inverse of the complementary error function.
Definition erfc_inv.hpp:78
EVE Main Namespace.
Definition abi.hpp:18

Parameters

Return value

  1. The value of the inverse complementary error function is returned. In particular:
    • If the argument is \(\pm0\), \(1\) is returned.
    • If the argument is \(2\), \(-\infty\) is returned.
    • If the argument is \(0\), \(\infty\) is returned.
    • If the argument is NaN, NaN is returned.

External references

Example

// revision 1
#include <eve/module/special.hpp>
#include <iostream>
int main()
{
eve::wide<float> wf([](auto i, auto c)->float{ return 2*(i-c/2);});
std::cout << "<- wf = " << wf << "\n";
std::cout << "-> erfc_inv(wf) = " << eve::erfc_inv(wf) << "\n";
std::cout << "-> erfc_inv[ignore_last(2)](wf)= " << eve::erfc_inv[eve::ignore_last(2)](wf) << "\n";
std::cout << "-> erfc_inv[wf != -2.0f](wf) = " << eve::erfc_inv[wf != -2.0f](wf) << "\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