Class expr

samples/common/half.h:444–460

Temporary half-precision expression. This class represents a half-precision expression which just stores a single-precision value internally.

/// Temporary half-precision expression.
/// This class represents a half-precision expression which just stores a single-precision value internally.
struct expr
{
    /// Conversion constructor.
    /// \param f single-precision value to convert
    explicit HALF_CONSTEXPR expr(float f) HALF_NOEXCEPT : value_(f) {}

    /// Conversion to single-precision.
    /// \return single precision value representing expression value
    HALF_CONSTEXPR operator float() const HALF_NOEXCEPT
    {
        return value_;
    }

private:
    /// Internal expression value stored in single-precision.
    float value_;
};

/// SFINAE helper for generic half-precision functions.
/// This class template has to be specialized for each valid combination of argument types to provide a corresponding