◆ signgam
Callable object computing the sign of the \(\Gamma\) function. Required header: Members Functions
Definition: value.hpp:103 Parameters
Return value Returns elementwise the sign of \(\displaystyle \Gamma(x)=\int_0^\infty t^{x-1}e^{-t}\mbox{d}t\) The result type is of the same type as the parameter. auto operator[]( conditional_expression auto cond ) const noexcept;
Higher-order function generating a masked version of eve::signgam Parameters
Return value A Callable object so that the expression Supported decoratorsno decorators are supported ExampleSee it live on Compiler Explorer #include <eve/function/gammaln.hpp>
#include <eve/wide.hpp>
#include <eve/constant/inf.hpp>
#include <eve/constant/minf.hpp>
#include <eve/constant/nan.hpp>
#include <iostream>
using wide_ft = eve::wide<float, eve::fixed<8>>;
int main()
{
using eve::pedantic;
wide_ft pf = {0.5f, -1.5f, -1.0f, 1.0f, 2.0f,
std::cout << "---- simd" << '\n'
<< "<- pf = " << pf << '\n'
<< "-> gammaln(pf) = " << eve::gammaln(pf) << '\n';
float xf = 4.0f;
std::cout << "---- scalar" << '\n'
<< "<- xf = " << xf << '\n'
<< "-> gammaln(xf) = " << eve::gammaln(xf) << '\n';
return 0;
}
constexpr callable_minf_ minf Callable object computing the negative infinity value. Definition: minf.hpp:55 constexpr callable_inf_ inf Callable object computing the infinity ieee value. Definition: inf.hpp:54 constexpr pedantic_type const pedantic Higher-order Callable Object imbuing more standard semantic onto other Callable Objects. Definition: pedantic.hpp:56 |