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stddev
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operators (std::subtract_with_carry_engine)

运算符<<，>%28 std：：减[医]带着[医]携带[医]发动机%29

template< class CharT, class Traits, class UIntType, size_t w, size_t s, size_t r > std::basic_ostream& operator<<( std::basic_ostream& ost, const std::subtract_with_carry_engine& e (1)(since C++11)
template< class CharT, class Traits, class UIntType, size_t w, size_t s, size_t r > std::basic_istream<CharT,Traits>& operator>>( std::basic_istream<CharT,Traits>& ist, std::subtract_with_carry_engine<UIntType,w,s,r>& e (2)(since C++11)

1%29序列化伪随机数引擎的内部状态。e作为由一个或多个空格分隔的十进制数序列，并将其插入流中。ost忽略流的填充字符和格式标志，不受影响。

2%29恢复伪随机数引擎的内部状态。e从序列化的表示形式中，该表示是由先前调用operator<<使用具有相同的注入区域和相同的流的流CharT和Traits如果无法反序列化输入，e保持不变failbit提上ist

如果使用os << x而该表示被还原到相同或不同的对象中。y类型相同的is >> y，然后x==y...

文本表示是用os.fmtflags设为ios_base::decios_base::left并将填充字符设置为空格字符。引擎%27s内部状态的文本表示是一组由空格分隔的十进制数。

参数

ost-output stream to insert the data to
ist-input stream to extract the data from
e-pseudo-random number engine

返回值

1%29ost

2%29ist

复杂性

例外

1%29%280%29

2%5月29日投掷std::ios::failure设置时failbit

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