FDIV: (Floationg Point Divide,浮点除)FEMMS(Fast Entry/Exit Multimedia State,快速进入/退出多媒体状态) 在多能奔腾之中,MMX和浮点单元是不能同时运行的。新的芯片加快了两者之间的切换,这就是FEMMS。
除支持基本的字符串之外,您还可以存储布尔值、双精度数、浮点数、整型数、长整型数和字节数组(考虑序列化)。
In addition to basic string support, you can store booleans, doubles, floats, integers, longs, and byte arrays (think serialization).
SIGFPE—算术异常、整数被零除或浮点异常。
SIGFPE - Arithmetic exception, integer divided by 0, or floating-point exception.
集成到CPU芯片的浮点数单元产生一个错误条件,比如数字溢出或者除0。
The floating-point unit integrated into the CPU chip has signaled an error condition, such as numeric overflow or division by 0.
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