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在本文中,我强调了Float 和Double之间的区别,以及哪一个应该在特定的地方使用。 In this article I have highlighted the difference between Float and Double, and which one should be used in specific places. 浮点数(简写为float )就是诸如3.5、42.1或者5.0这样的分数或小数。 Floating-point numbers(or floats for short) are fractions or numbers with decimal points like 3.5, 42.1, and 5.0. 因此,float 和double的编码方式相同,并且您可能不知道在调用的另一端收到了哪一个。 So, a float and double are encoded the same way, and you may not know which is received on the other end of the call. 浮点例程具有类似于__aeabi_dadd(将两个double相加)和__aeabi_fdiv(将两个float 相除)的名称。 These routines have names like_dadd(add two doubles) and_fdiv(divide two floats ). 其中三对(border、float 和margin)通过img元素的CSS规则应用。 Three of the pairs(border, float and margin) are applied via a CSS rule for the img element.
Double总是有16位有效数字,而float 总是有7位有效数字…? Do doubles always have 16 significant figures while floats always have 7 significant figures? Go不存在类型之间的隐式转换,例如int和uint,或者float 和int。 Go doesn't have implicit conversions between types, such as int and uint, or floats and int. 位操作不能用于float 、double、longdouble、void或其它复杂类型。 Bitwise operations cannot be used on bool, float , double, long double, void, or other more complex data types. Info()用于查看哪些特性是连续的、分类的,以及它们的类型(int、float 、string)。 Info()to see which features are continuous, categorical, their type(int, float , string). Java语言支持两种基本的浮点类型:float 和double,以及与它们对应的包装类Float 和Double。 The Java language supports two primitive floating point types: float and double, and their wrapper class counterparts, Float and Double. Structuretag是可选的,每个memberdefinition是标准的变量定义,比如inti;或者float f; The union tag is optional and each member definition is a normal variable definition, such as int i; or float f; 该规则遵循这样的事实:在decimal类型与double和float 类型之间不存在隐式转换。 The rule follows from the fact that there are no implicit conversions between the decimal type and the double and float types. Oneormoreunionvariables;union标签是可选的,每个成员的定义是一个正常的变量定义,如inti;和float f; The union tag is optional and each member definition is a normal variable definition, such as int i; or float f; 对于原始字段来说,在相关的封装类中有helper功能,可以帮助创建散列值,如Float .floatToIntBits。 For primitive fields, there are helper functions in the associated wrapper classes that can help in creating hash values, such as Float . floatToIntBits. Union标签是可选的,每个成员的定义是一个正常的变量定义,如inti;和float f; The union tag is optional and each member definition is a normal variable definition, such as int i; or float f; 这个概念在SQLServer2008中被扩展成全部定长的数据类型,比如integer,char和float 数据类型。 This concept has been extended in SQL Server 2008 to all fixed-legth data types such as integer, char, and float data types. 这会有点让人困惑,因为你可能会认为“浮点数”的缺省类型是float 。 This is slightly confusing as you might think that the default type for a"floating point number" would be a float . Structuretag是可选的,每个memberdefinition是标准的变量定义,比如inti;或者float f; The structure tag is optional and each member definition is a normal variable definition, such as int i; or float f; 与float 和double数据类型相反,十进制小数数字(如0.1)可以精确地用decimal表示形式来表示。 Contrary to the float and double data types, decimal fractional numbers such as 0.1 can be represented exactly in the decimal representation. 此对象表示的float 值被转换为double类型,并返回转换的结果。 The float value represented by this object converted to type int and the result of the conversion is returned.
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