main/api/math_8hpp_source.html

#ifndef TDLS_CORE_MATH_HPP

#define TDLS_CORE_MATH_HPP


#include <cmath>


#include <tdls/core/macros.hpp>


namespace tdls {


namespace detail {


template<typename T>


[[nodiscard]] TDLS_HOST_DEVICE TDLS_FORCEINLINE constexpr T abs(const T x) noexcept {

#if defined(__has_builtin)

#if __has_builtin(__builtin_is_constant_evaluated)

    if (__builtin_is_constant_evaluated()) return x < T(0) ? -x : x;

#endif

#elif defined(_MSC_VER) && _MSC_VER >= 1925

    if (__builtin_is_constant_evaluated()) return x < T(0) ? -x : x;

#endif

    return std::fabs(x);

}


} // namespace detail


} // namespace tdls


#endif // TDLS_CORE_MATH_HPP

macros.hpp
Toolchain detection and portability macros.

TDLS_HOST_DEVICE
#define TDLS_HOST_DEVICE
__host__ __device__ under CUDA, the equivalent attributes under HIP, empty elsewhere.
Definition macros.hpp:45

TDLS_FORCEINLINE
#define TDLS_FORCEINLINE
__forceinline__ under CUDA, the equivalent attribute under HIP (see TDLS_HOST_DEVICE for why),...
Definition macros.hpp:67

tdls::detail::abs
TDLS_HOST_DEVICE TDLS_FORCEINLINE constexpr T abs(const T x) noexcept
Absolute value usable in constant expressions.
Definition math.hpp:41