E.V.E
v2023.02.15
Loading...
Searching...
No Matches
◆
gd
auto eve::gd =
functor
<gd_t>
inline
constexpr
Defined in Header
#include <eve/module/math.hpp>
Callable Signatures
namespace
eve
{
// Regular overload
constexpr
auto
gd
(
floating_value
auto
x)
noexcept
;
// 1
// Lanes masking
constexpr
auto
gd
[
conditional_expr
auto
c](
floating_value
auto
x)
noexcept
;
// 2
constexpr
auto
gd
[
logical_value
auto
m](
floating_value
auto
x)
noexcept
;
// 2
}
eve::conditional_expr
Specifies that a type is a Conditional Expression.
Definition
conditional.hpp:28
eve::floating_value
The concept floating_value<T> is satisfied if and only if T satisfies eve::value and the element type...
Definition
value.hpp:116
eve::logical_value
The concept logical_value<T> is satisfied if and only if T satisfies eve::value and the element type ...
Definition
value.hpp:132
eve::gd
constexpr auto gd
elementwise_callable object computing the gudermanian gd: .
Definition
gd.hpp:77
eve
EVE Main Namespace.
Definition
abi.hpp:18
Parameters
x
:
floating value
.
c
:
Conditional expression
masking the operation.
m
:
Logical value
masking the operation.
Return value
Returns the
elementwise
gudermanian of the input. In particular:
If the element is \(\pm0\), \(0\) is returned.
If the element is \(\pm\infty\), \(\pm\pi/2\) is returned.
If the element is a
NaN
,
NaN
is returned.
The operation is performed conditionnaly
.
External references
Wolfram MathWorld: Gudermannian
Wikipedia: Gudermannian function
DLMF: gudermannian functions: gudermannian functions
Example
// revision 1
#include <eve/module/math.hpp>
#include <iostream>
int
main()
{
eve::wide<float>
wf = [](
auto
i,
auto
c) {
return
2.f*(i-c/2);};
std::cout <<
"<- wf = "
<< wf <<
"\n"
;
std::cout <<
"-> gd(wf) = "
<<
eve::gd
(wf) <<
"\n"
;
std::cout <<
"-> gd[ignore_last(2)](wf)= "
<<
eve::gd
[
eve::ignore_last
(2)](wf) <<
"\n"
;
std::cout <<
"-> gd[wf != -2.0](wf) = "
<<
eve::gd
[wf != -2.0](wf) <<
"\n"
;
}
eve::ignore_last
Conditional expression ignoring the k last lanes from a eve::simd_value.
Definition
conditional.hpp:332
eve::wide
Wrapper for SIMD registers.
Definition
wide.hpp:70
eve