Little-endian

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Little-endian is most often referred to the endianness or order of multiple Bytes inside a composite item, such as a Word (two bytes), a Double Word (four bytes) or a Quad Word (eight bytes), which keeps the byte order (in the arithmetical sense) in the order of their addresses in memory - for instance the double word integer 16909060 or 0x01020304.

=Memory layout= 0x01020304

=Runtime Test= Following C-routine returns "true" on little-endian machines, such as Intel x86: bool isLittleEndian { short one = 0x0001; // 16 bit return (bool) (*(char*)&one); }

=Little-Endian Files= File index 0 maps the A-File, index 7 the H-File.

=Little-Endian Ranks= Rank index 0 maps the first Rank, index 7 the eight Rank.

=Least Significant Files= squareIndex = 8*rankIndex + fileIndex rankIndex  = squareIndex div 8 fileIndex  = squareIndex mod 8 The LERF-coordianetes with Little-Endian Files and Little-Endian Ranks: enum enumSquare { a1, b1, c1, d1, e1, f1, g1, h1, // 0 .. 7 a2, b2, c2, d2, e2, f2, g2, h2, //  8 .. 15 a3, b3, c3, d3, e3, f3, g3, h3, // 16 .. 23 a4, b4, c4, d4, e4, f4, g4, h4, // 24 .. 31 a5, b5, c5, d5, e5, f5, g5, h5, // 32 .. 39 a6, b6, c6, d6, e6, f6, g6, h6, // 40 .. 47 a7, b7, c7, d7, e7, f7, g7, h7, // 48 .. 55 a8, b8, c8, d8, e8, f8, g8, h8  // 56 .. 63 }; Note: If printing boards from top to bottom, one has to start with the big-end rank. A   B    C    D    E    F    G    H   +++++++++ 8 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 8th rank +++++++++ 7 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 7th rank +++++++++ 6 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 6th rank +++++++++ 5 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 5th rank +++++++++ 4 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 4th rank +++++++++ 3 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 3rd rank +++++++++ 2 | 8 |  9 | 10 | 11 | 12 | 13 | 14 | 15 |  2nd rank +++++++++ 1 | 0 |  1 |  2 |  3 |  4 |  5 |  6 |  7 |  1st rank +++++++++    A    B    C    D    E    F    G    H - file(s) =Date-Format= The little-endian date format: dd-mm-yyyy.
 * Files are the little-end below ranks:

=See also=
 * Big-endian
 * Square Mapping Considerations
 * Flipping Mirroring and Rotating
 * Word
 * Double Word
 * Quad Word

=External Links=
 * Endianness from Wikipedia
 * IEN 137 - DAV's Endian FAQ - On Holy Wars and a Plea for Peace by Danny Cohen, USC/ISI, April 1, 1980

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