如果出现错误的最高有效位,即像素得到完全不同的价值。
If an error occurs on the MSB, that pixel gets an entirely different value.
在未选中的上下文中,放弃结果的最高有效位并继续执行。
In an unchecked context, the most significant bits of the result are discarded and execution continues.
该第二 内存块,用以储存该像素数据的其它非最高有效位。
The second memory block is used for storing other non highest significant digit of the pixel data.
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