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图像处理中SSE的应用

于 2022-02-09 发布 文件大小:58.40 kB
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SSE – Streaming SIMD Extension,是Intel从PIII开始加入的一种x86扩展指令集。在SSE以前,x86的浮点运算都是以栈式FPU完成的,有一定x86汇编经验的人应该不会对那些复杂的fld、fst指令陌生吧。而SSE一方面让浮点运算可以像整数运算的模式、如 add eax , ebx 那样通过直接访问寄存器完成,绕开了讨厌的栈,另一方面引入了SIMD这个概念。SIMD – Single Instruction Multiply Data,顾名思义,它可以同时让一条指令在多个数据上执行,这种

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