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C look up table
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123testing



Joined: 22 Dec 2007
Posts: 10
Post03 Feb 2008 13:17   

C look up table
I am trying o write the following program in C for use in a Micro.

Can anybody give me:

Examplea on "look up tables" using C.

Thanks to all.

Last edited by 123testing on 12 Feb 2008 17:01; edited 1 time in total
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Post03 Feb 2008 13:17   

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wek



Joined: 21 Dec 2004
Posts: 239
Helped: 26
Post04 Feb 2008 12:52   

C look up table
Code:

const unsigned char lookup_table[256] = {12, 32, 33, *etc.* }

[...]

resulting_value = lookup_table[input_value];

[...]

Use an appropriate qualifier (nonstandard) to place the table into ROM/FLASH rather than RAM.

JW
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