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In computer science, a lookup table (LUT) is an array that replaces runtime computation with a simpler array indexing operation, in a process termed as direct addressing.The savings in processing time can be significant, because retrieving a value from memory is often faster than carrying out an "expensive" computation or input/output operation. [1]
Returns the value of the cell(s) in one or more output columns of the row matching the search key and column. This function is reminiscent of LOOKUP() macros in popular spreadsheet applications, except that the search key must match exactly. (On the other hand, this means the table does not need to be sorted.)
Thus, the overall algorithm may be performed by operating on only (n/t) 2 blocks instead of on n 2 matrix cells, where n is the side length of the matrix. In order to keep the size of the lookup tables (and the time needed to initialize them) sufficiently small, t is typically chosen to be O (log n ) .
WASHINGTON -- Secret Service agents on Friday officially said goodbye to “Deacon,” the code-name they used for former President Jimmy Carter, who had the longest-serving security detail in the ...
As cases of the HMPV virus continue to increase in the U.S. and in China, here's what you need to know about the virus.
Comma-separated values (CSV) is a text file format that uses commas to separate values, and newlines to separate records. A CSV file stores tabular data (numbers and text) in plain text , where each line of the file typically represents one data record .
Howard passed for 319 yards, Emeka Egbuka also caught a long TD pass and TreVeyon Henderson made a 66-yard touchdown run in a redemptive Rose Bowl for the Buckeyes (12-2, CFP No. 8 seed), who lost ...
When the computer calculates a formula in one cell to update the displayed value of that cell, cell reference(s) in that cell, naming some other cell(s), causes the computer to fetch the value of the named cell(s). A cell on the same "sheet" is usually addressed as: =A1 A cell on a different sheet of the same spreadsheet is usually addressed as: