E.V.E
v2023.02.15
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is_nemz
auto eve::is_nemz =
functor
<is_nemz_t>
inline
constexpr
Header file
#include <eve/module/core.hpp>
Callable Signatures
namespace
eve
{
// Regular overload
constexpr
auto
is_nemz
(
floating_value
auto
x)
noexcept
;
// 1
// Lanes masking
constexpr
auto
is_nemz
[
conditional_expr
auto
c](
floating_value
auto
x)
noexcept
;
// 2
constexpr
auto
is_nemz
[
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::is_nemz
constexpr auto is_nemz
elementwise callable returning a logical true if and only if a "negative" zero.
Definition
is_nemz.hpp:71
eve
EVE Main Namespace.
Definition
abi.hpp:18
Parameters
x
:
floating argument
.
c
:
Conditional expression
masking the operation.
m
:
Logical value
masking the operation.
Return value
is_nemz(x)
is semantically equivalent to bitwise equality to
mzero(as(x))
.
The operation is performed conditionnaly
.
Example
// revision 0
#include <eve/module/core.hpp>
#include <iostream>
int
main()
{
eve::wide
wf0{0.0, 1.0, 2.0, 3.0, -1.0, -2.0, -3.0, -0.0};
eve::wide
wi0{0, 1, 2, 3, -1, -2, -3, -4};
eve::wide
wu0{0u, 1u, 2u, 3u, 4u, 5u, 6u, 7u};
std::cout <<
"<- wf0 = "
<< wf0 <<
"\n"
;
std::cout <<
"-> is_nemz(wf0) = "
<<
eve::is_nemz
(wf0) <<
"\n"
;
std::cout <<
"-> is_nemz[ignore_last(2)](wf0) = "
<<
eve::is_nemz
[
eve::ignore_last
(2)](wf0) <<
"\n"
;
std::cout <<
"-> is_nemz[wf0 != 0](wf0) = "
<<
eve::is_nemz
[wf0 != 0](wf0) <<
"\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