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x86 Bit Test instruction equivalent in SIMD, x86 Bit Test instruction equivalent in SIMD instructions for checking individual bits?

dosboxing
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The Bit Test instruction BT is used to check individual bits in a register by copying the least significant bit to the carry flag such as the third one in the EAX register using.

BT EAX, 3

What I wanted to know is if there is a similar way to test MMX registers or SSE registers using some SIMD instruction? Are MMX and SSE registers the same by the way?
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huntingspace
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unfortunately, there is not. but there is PTEST instruction. it's a similar to the TEST instruction. ;)
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Nurimex
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seems remarkable idea to me is
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