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a math problem?

 
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lanyong



Joined: 14 Jan 2004
Posts: 9
Location: Xiamen,Fujian Province, China

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a math problem?
PostPosted: Thu Dec 27, 2007 11:39 pm     Reply with quote
8bit data:
L[8]={L0,L1,L2,,, L7}

how to get

H[8]={H0,H1,H2,,,H7}

more fast?


bit:
L0.7 L0.6 L0.5 L0.4 L0.3 L0.2 L0.1 L0.0
L1.7 L1.6 L1.5 L1.4 L1.3 L1.2 L1.1 L1.0
L2.7 L2.6 L2.5 L2.4 L2.3 L2.2 L2.1 L2.0

,
,
,
L7.7 L7.6 L7.5 L7.4 L7.3 L7.2 L7.1 L7.0



H & L:
H0:L7.0,,,L2.0,L1.0 L0.0
H1:L7.1,,,L2.1,L1.1 L0.1



thanks.


use pic18 or pic24 or dsPIC is ok.
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Lan Yong
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Dec 27, 2007 11:53 pm     Reply with quote
Are you asking how to copy an array ?

http://www.ccsinfo.com/forum/viewtopic.php?t=29519&highlight=copy+array
lanyong



Joined: 14 Jan 2004
Posts: 9
Location: Xiamen,Fujian Province, China

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PostPosted: Fri Dec 28, 2007 12:29 am     Reply with quote
PCM programmer wrote:
Are you asking how to copy an array ?

http://www.ccsinfo.com/forum/viewtopic.php?t=29519&highlight=copy+array


no change array L to array H.

a math change

such as:

H0=L0;
H0|=(L1<<1)&0x02;
H0|=(L2<<2)&0x04;
H0|=(L3<<3)&0x08;
H0|=(L4<<4)&0x10;
H0|=(L5<<5)&0x20;
H0|=(L6<<6)&0x40;
H0|=(L7<<7)&0x80;


i want find a fast way to get array H.
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Lan Yong
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