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IL中indexof的问题
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Aurex
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May 29, 2009, 2:03:48 AM
5/29/09
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看到SKA中翻译的为
mov r279.xy__, v0
mov r285.x___, l12.x000
mov r285._y__, l13.0x00
sub r286.xy__, r279.xy00, r285.xy00
l12,l13都是0.5f
为什么要减去这0.5,是不是为了插值运算过程中方便...
Jiawei Ou
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May 29, 2009, 2:12:25 AM
5/29/09
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因为硬件给出的v0值在默认情况下是加了0.5的。所以如一维的v0如下
0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5....
所以减去0.5才会或者正确的index值。
Aurex
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May 29, 2009, 2:42:38 AM
5/29/09
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to AMD-SPL
哦,明白~~
> 为什么要减去这0.5,是不是为了插值运算过程中方便...- 隐藏被引用文字 -
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