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621 lines
27 KiB
ReStructuredText
621 lines
27 KiB
ReStructuredText
:github_url: hide
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.. _class_float:
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float
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=====
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A built-in type for floating-point numbers.
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.. rst-class:: classref-introduction-group
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說明
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----
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The **float** built-in type is a 64-bit double-precision floating-point number, equivalent to ``double`` in C++. This type has 14 reliable decimal digits of precision. The maximum value of **float** is approximately ``1.79769e308``, and the minimum is approximately ``-1.79769e308``.
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Many methods and properties in the engine use 32-bit single-precision floating-point numbers instead, equivalent to ``float`` in C++, which have 6 reliable decimal digits of precision. For data structures such as :ref:`Vector2<class_Vector2>` and :ref:`Vector3<class_Vector3>`, Godot uses 32-bit floating-point numbers by default, but it can be changed to use 64-bit doubles if Godot is compiled with the ``precision=double`` option.
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Math done using the **float** type is not guaranteed to be exact and will often result in small errors. You should usually use the :ref:`@GlobalScope.is_equal_approx()<class_@GlobalScope_method_is_equal_approx>` and :ref:`@GlobalScope.is_zero_approx()<class_@GlobalScope_method_is_zero_approx>` methods instead of ``==`` to compare **float** values for equality.
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.. rst-class:: classref-introduction-group
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教學
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----
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- `維琪百科：雙精度浮點數格式 <https://en.wikipedia.org/wiki/Double-precision_floating-point_format>`__
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- `維琪百科：單精確度浮點數格式 <https://en.wikipedia.org/wiki/Single-precision_floating-point_format>`__
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.. rst-class:: classref-reftable-group
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建構子
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------
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.. table::
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:widths: auto
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+---------------------------+---------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`float<class_float_constructor_float>`\ (\ ) |
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+---------------------------+---------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`float<class_float_constructor_float>`\ (\ from\: :ref:`float<class_float>`\ ) |
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+---------------------------+---------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`float<class_float_constructor_float>`\ (\ from\: :ref:`String<class_String>`\ ) |
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+---------------------------+---------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`float<class_float_constructor_float>`\ (\ from\: :ref:`bool<class_bool>`\ ) |
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+---------------------------+---------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`float<class_float_constructor_float>`\ (\ from\: :ref:`int<class_int>`\ ) |
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+---------------------------+---------------------------------------------------------------------------------------+
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.. rst-class:: classref-reftable-group
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運算子
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------
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.. table::
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:widths: auto
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator !=<class_float_operator_neq_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator !=<class_float_operator_neq_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Color<class_Color>` | :ref:`operator *<class_float_operator_mul_Color>`\ (\ right\: :ref:`Color<class_Color>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Quaternion<class_Quaternion>` | :ref:`operator *<class_float_operator_mul_Quaternion>`\ (\ right\: :ref:`Quaternion<class_Quaternion>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Vector2<class_Vector2>` | :ref:`operator *<class_float_operator_mul_Vector2>`\ (\ right\: :ref:`Vector2<class_Vector2>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Vector2<class_Vector2>` | :ref:`operator *<class_float_operator_mul_Vector2i>`\ (\ right\: :ref:`Vector2i<class_Vector2i>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Vector3<class_Vector3>` | :ref:`operator *<class_float_operator_mul_Vector3>`\ (\ right\: :ref:`Vector3<class_Vector3>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Vector3<class_Vector3>` | :ref:`operator *<class_float_operator_mul_Vector3i>`\ (\ right\: :ref:`Vector3i<class_Vector3i>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Vector4<class_Vector4>` | :ref:`operator *<class_float_operator_mul_Vector4>`\ (\ right\: :ref:`Vector4<class_Vector4>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`Vector4<class_Vector4>` | :ref:`operator *<class_float_operator_mul_Vector4i>`\ (\ right\: :ref:`Vector4i<class_Vector4i>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator *<class_float_operator_mul_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator *<class_float_operator_mul_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator **<class_float_operator_pow_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator **<class_float_operator_pow_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator +<class_float_operator_sum_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator +<class_float_operator_sum_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator -<class_float_operator_dif_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator -<class_float_operator_dif_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator /<class_float_operator_div_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator /<class_float_operator_div_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator \<<class_float_operator_lt_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator \<<class_float_operator_lt_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator \<=<class_float_operator_lte_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator \<=<class_float_operator_lte_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator ==<class_float_operator_eq_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator ==<class_float_operator_eq_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator ><class_float_operator_gt_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator ><class_float_operator_gt_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator >=<class_float_operator_gte_float>`\ (\ right\: :ref:`float<class_float>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`bool<class_bool>` | :ref:`operator >=<class_float_operator_gte_int>`\ (\ right\: :ref:`int<class_int>`\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator unary+<class_float_operator_unplus>`\ (\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`operator unary-<class_float_operator_unminus>`\ (\ ) |
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+-------------------------------------+-----------------------------------------------------------------------------------------------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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建構子說明
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----------
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.. _class_float_constructor_float:
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.. rst-class:: classref-constructor
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:ref:`float<class_float>` **float**\ (\ ) :ref:`🔗<class_float_constructor_float>`
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建構預設初始化的 **float**\ ，會被設為 ``0.0``\ 。
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.. rst-class:: classref-item-separator
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----
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.. rst-class:: classref-constructor
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:ref:`float<class_float>` **float**\ (\ from\: :ref:`float<class_float>`\ )
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建構給定 **float** 的副本。
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.. rst-class:: classref-item-separator
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----
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.. rst-class:: classref-constructor
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:ref:`float<class_float>` **float**\ (\ from\: :ref:`String<class_String>`\ )
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將 :ref:`String<class_String>` 轉換為 **float**\ ，遵循與 :ref:`String.to_float()<class_String_method_to_float>` 相同的規則。
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.. rst-class:: classref-item-separator
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----
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.. rst-class:: classref-constructor
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:ref:`float<class_float>` **float**\ (\ from\: :ref:`bool<class_bool>`\ )
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將 :ref:`bool<class_bool>` 值轉換為浮點值，\ ``float(true)`` 將等於 1.0，\ ``float(false)`` 將等於 0.0。
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.. rst-class:: classref-item-separator
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----
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.. rst-class:: classref-constructor
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:ref:`float<class_float>` **float**\ (\ from\: :ref:`int<class_int>`\ )
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將 :ref:`int<class_int>` 值轉換為浮點值，\ ``float(1)`` 將等於 ``1.0``\ 。
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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運算子說明
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----------
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.. _class_float_operator_neq_float:
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.. rst-class:: classref-operator
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:ref:`bool<class_bool>` **operator !=**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_neq_float>`
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如果兩個浮點數彼此不同，則返回 ``true``\ 。
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\ **注意：**\ :ref:`@GDScript.NAN<class_@GDScript_constant_NAN>` 的行為與其他數位不同。因此，如果包含 NaN，則這個方法的結果可能不準確。
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_neq_int:
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.. rst-class:: classref-operator
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:ref:`bool<class_bool>` **operator !=**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_neq_int>`
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如果整數的值與浮點數不同，則返回 ``true``\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Color:
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.. rst-class:: classref-operator
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:ref:`Color<class_Color>` **operator ***\ (\ right\: :ref:`Color<class_Color>`\ ) :ref:`🔗<class_float_operator_mul_Color>`
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Multiplies each component of the :ref:`Color<class_Color>`, including the alpha, by the given **float**.
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::
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print(1.5 * Color(0.5, 0.5, 0.5)) # Prints (0.75, 0.75, 0.75, 1.5)
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Quaternion:
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.. rst-class:: classref-operator
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:ref:`Quaternion<class_Quaternion>` **operator ***\ (\ right\: :ref:`Quaternion<class_Quaternion>`\ ) :ref:`🔗<class_float_operator_mul_Quaternion>`
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將該 :ref:`Quaternion<class_Quaternion>` 的每個分量乘以給定的 **float**\ 。此操作本身沒有意義，但可以用作更大運算式的一部分。
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Vector2:
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.. rst-class:: classref-operator
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:ref:`Vector2<class_Vector2>` **operator ***\ (\ right\: :ref:`Vector2<class_Vector2>`\ ) :ref:`🔗<class_float_operator_mul_Vector2>`
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Multiplies each component of the :ref:`Vector2<class_Vector2>` by the given **float**.
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::
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print(2.5 * Vector2(1, 3)) # Prints (2.5, 7.5)
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Vector2i:
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.. rst-class:: classref-operator
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:ref:`Vector2<class_Vector2>` **operator ***\ (\ right\: :ref:`Vector2i<class_Vector2i>`\ ) :ref:`🔗<class_float_operator_mul_Vector2i>`
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Multiplies each component of the :ref:`Vector2i<class_Vector2i>` by the given **float**. Returns a :ref:`Vector2<class_Vector2>`.
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::
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print(0.9 * Vector2i(10, 15)) # Prints (9.0, 13.5)
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Vector3:
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.. rst-class:: classref-operator
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:ref:`Vector3<class_Vector3>` **operator ***\ (\ right\: :ref:`Vector3<class_Vector3>`\ ) :ref:`🔗<class_float_operator_mul_Vector3>`
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將該 :ref:`Vector3<class_Vector3>` 的每個分量乘以給定的 **float**\ 。
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Vector3i:
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.. rst-class:: classref-operator
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:ref:`Vector3<class_Vector3>` **operator ***\ (\ right\: :ref:`Vector3i<class_Vector3i>`\ ) :ref:`🔗<class_float_operator_mul_Vector3i>`
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Multiplies each component of the :ref:`Vector3i<class_Vector3i>` by the given **float**. Returns a :ref:`Vector3<class_Vector3>`.
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::
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print(0.9 * Vector3i(10, 15, 20)) # Prints (9.0, 13.5, 18.0)
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.. rst-class:: classref-item-separator
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----
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.. _class_float_operator_mul_Vector4:
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.. rst-class:: classref-operator
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:ref:`Vector4<class_Vector4>` **operator ***\ (\ right\: :ref:`Vector4<class_Vector4>`\ ) :ref:`🔗<class_float_operator_mul_Vector4>`
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將該 :ref:`Vector4<class_Vector4>` 的每個分量乘以給定的 **float**\ 。
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.. rst-class:: classref-item-separator
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----
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|
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.. _class_float_operator_mul_Vector4i:
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.. rst-class:: classref-operator
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:ref:`Vector4<class_Vector4>` **operator ***\ (\ right\: :ref:`Vector4i<class_Vector4i>`\ ) :ref:`🔗<class_float_operator_mul_Vector4i>`
|
||
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Multiplies each component of the :ref:`Vector4i<class_Vector4i>` by the given **float**. Returns a :ref:`Vector4<class_Vector4>`.
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||
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::
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print(0.9 * Vector4i(10, 15, 20, -10)) # Prints (9.0, 13.5, 18.0, -9.0)
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||
|
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.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_mul_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator ***\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_mul_float>`
|
||
|
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將兩個 **float** 相乘。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_mul_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator ***\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_mul_int>`
|
||
|
||
將 **float** 和 :ref:`int<class_int>` 相乘。結果是 **float**\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_pow_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator ****\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_pow_float>`
|
||
|
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將 **float** 提升到 **float** 次冪。
|
||
|
||
::
|
||
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||
print(39.0625**0.25) # 2.5
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||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_pow_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator ****\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_pow_int>`
|
||
|
||
將 **float** 提升到 :ref:`int<class_int>` 次冪。結果為 **float**\ 。
|
||
|
||
::
|
||
|
||
print(0.9**3) # 0.729
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||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_sum_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
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:ref:`float<class_float>` **operator +**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_sum_float>`
|
||
|
||
將兩個浮點數相加。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_sum_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator +**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_sum_int>`
|
||
|
||
將 **float** 加上 :ref:`int<class_int>`\ 。結果為 **float**\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_dif_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator -**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_dif_float>`
|
||
|
||
將一個浮點數減去另一個浮點數。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_dif_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator -**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_dif_int>`
|
||
|
||
將 **float** 減去 :ref:`int<class_int>`\ 。結果為 **float**\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_div_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator /**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_div_float>`
|
||
|
||
將兩個浮點數相除。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_div_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator /**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_div_int>`
|
||
|
||
將 **float** 除以 :ref:`int<class_int>`\ 。結果是 **float**\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_lt_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator <**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_lt_float>`
|
||
|
||
如果左側的浮點數小於右側的，則返回 ``true``\ 。
|
||
|
||
\ **注意：**\ :ref:`@GDScript.NAN<class_@GDScript_constant_NAN>` 的行為與其他數位不同。因此，如果包含 NaN，則這個方法的結果可能不準確。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_lt_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator <**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_lt_int>`
|
||
|
||
如果該 **float** 小於給定的 :ref:`int<class_int>`\ ，則返回 ``true``\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_lte_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator <=**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_lte_float>`
|
||
|
||
如果左側的浮點數小於等於右側的，則返回 ``true``\ 。
|
||
|
||
\ **注意：**\ :ref:`@GDScript.NAN<class_@GDScript_constant_NAN>` 的行為與其他數位不同。因此，如果包含 NaN，則這個方法的結果可能不準確。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_lte_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator <=**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_lte_int>`
|
||
|
||
如果該 **float** 小於等於給定的 :ref:`int<class_int>`\ ，則返回 ``true``\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_eq_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator ==**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_eq_float>`
|
||
|
||
如果兩個浮點數完全相等，則返回 ``true``\ 。
|
||
|
||
\ **注意：**\ 由於浮點精度誤差，考慮改用更可靠的 :ref:`@GlobalScope.is_equal_approx()<class_@GlobalScope_method_is_equal_approx>` 或 :ref:`@GlobalScope.is_zero_approx()<class_@GlobalScope_method_is_zero_approx>`\ 。
|
||
|
||
\ **注意：**\ :ref:`@GDScript.NAN<class_@GDScript_constant_NAN>` 的行為與其他數位不同。因此，如果包含 NaN，則這個方法的結果可能不準確。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_eq_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator ==**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_eq_int>`
|
||
|
||
如果該 **float** 等於給定的 :ref:`int<class_int>`\ ，則返回 ``true``\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_gt_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator >**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_gt_float>`
|
||
|
||
如果左側的浮點數大於右側的，則返回 ``true``\ 。
|
||
|
||
\ **注意：**\ :ref:`@GDScript.NAN<class_@GDScript_constant_NAN>` 的行為與其他數位不同。因此，如果包含 NaN，則這個方法的結果可能不準確。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_gt_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator >**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_gt_int>`
|
||
|
||
如果該 **float** 大於給定的 :ref:`int<class_int>`\ ，則返回 ``true``\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_gte_float:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator >=**\ (\ right\: :ref:`float<class_float>`\ ) :ref:`🔗<class_float_operator_gte_float>`
|
||
|
||
如果左側的浮點數大於等於右側的，則返回 ``true``\ 。
|
||
|
||
\ **注意：**\ :ref:`@GDScript.NAN<class_@GDScript_constant_NAN>` 的行為與其他數位不同。因此，如果包含 NaN，則這個方法的結果可能不準確。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_gte_int:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`bool<class_bool>` **operator >=**\ (\ right\: :ref:`int<class_int>`\ ) :ref:`🔗<class_float_operator_gte_int>`
|
||
|
||
如果該 **float** 大於等於給定的 :ref:`int<class_int>`\ ，則返回 ``true``\ 。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_unplus:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator unary+**\ (\ ) :ref:`🔗<class_float_operator_unplus>`
|
||
|
||
返回與 ``+`` 不存在時相同的值。單目 ``+`` 沒有作用，但有時可以使你的程式碼更具可讀性。
|
||
|
||
.. rst-class:: classref-item-separator
|
||
|
||
----
|
||
|
||
.. _class_float_operator_unminus:
|
||
|
||
.. rst-class:: classref-operator
|
||
|
||
:ref:`float<class_float>` **operator unary-**\ (\ ) :ref:`🔗<class_float_operator_unminus>`
|
||
|
||
返回該 **float** 的相反數。如果為正數，則將該數變為負數。如果為負數，則將該數變為正數。對於浮點數，數位零既可以是正數，也可以是負數。
|
||
|
||
.. |virtual| replace:: :abbr:`virtual (本方法通常需要使用者覆寫才能生效。)`
|
||
.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
|
||
.. |const| replace:: :abbr:`const (本方法沒有副作用。不會修改該實例的任何成員變數。)`
|
||
.. |vararg| replace:: :abbr:`vararg (本方法除了這裡描述的參數外，還可以接受任意數量的參數。)`
|
||
.. |constructor| replace:: :abbr:`constructor (本方法用於建構一個型別。)`
|
||
.. |static| replace:: :abbr:`static (本方法無需實例即可呼叫，因此可以直接使用類別名稱呼叫。)`
|
||
.. |operator| replace:: :abbr:`operator (本方法描述將本型別作為左運算元時可用的有效運算子。)`
|
||
.. |bitfield| replace:: :abbr:`BitField (此值是由下列旗標組成的位元遮罩整數。)`
|
||
.. |void| replace:: :abbr:`void (無回傳值。)`
|