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Long double IEEE double extended floating point exponent of 15 bits and signed fraction of 64 bits.
longdouble IEEE双字节扩展浮点数15位指数,64位带符号小数。
Floating-Point literals may also be represented using exponential notation: a real number followed by the letter e(or E), followed by an optional plus or minus sign, followed by an integer exponent.
此外,还可以使用指数记数法表示浮点型直接量,即实数后跟随字母e或E,后面加上正负号,其后再加一个整型指数。
A floating literal consists of an integer part, a decimal point, a fraction part, ane or e, an optionally signed integer exponent, and an optional type suffix.
浮点文字量由整数部分,小数点,小数部分,e或e,可选的有符号整数指数,以及可选的类型后缀组成。
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