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matrix doc

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Irmen de Jong 2018-10-27 22:16:18 +02:00
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docs/source/programming.rst
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@ -200,17 +200,19 @@ Arrays can be made of bytes, words and floats. Matrixes can oly be made of bytes
byte[4] array = [1, 2, 3, 4] ; initialize the array byte[4] array = [1, 2, 3, 4] ; initialize the array
byte[99] array = 255 ; initialize array with all 255's [255, 255, 255, 255, ...] byte[99] array = 255 ; initialize array with all 255's [255, 255, 255, 255, ...]
byte[100] array = 100 to 199 ; initialize array with [100, 101, ..., 198, 199] byte[100] array = 100 to 199 ; initialize array with [100, 101, ..., 198, 199]
byte[2,3] matrix = 1 ; a matrix of 2*3=6 bytes all with value 1
byte[2,3] matrix = [1,2,3,4,5,6] ; a 2*3 matrix with value |(1,2) (3,4) (5,6)| byte[2,3] matrix = [1,2,3,4,5,6] ; a 2*3 matrix with value |(1,2) (3,4) (5,6)|
ubyte[2,3] matrix = 255 ; a matrix of 2*3=6 unsigned bytes all with value 255
value = array[3] ; the fourth value in the array (index is 0-based) value = array[3] ; the fourth value in the array (index is 0-based)
value = matrix[4,2] ; the byte at the 5th column and 3rd row in the matrix value = matrix[4,2] ; the byte at the 5th column and 3rd row in the matrix
char = string[4] ; the fifth character (=byte) in the string char = string[4] ; the fifth character (=byte) in the string
.. note:: .. note::
Right now, the array and matrix size should be small enough to be indexable by a single byte index. Right now, the array should be small enough to be indexable by a single byte index.
This means byte arrays and matrixes should be <= 256 elements, word arrays <= 128 elements, and float This means byte arrays should be <= 256 elements, word arrays <= 128 elements, and float
arrays <= 51 elements. This limit may be lifted in a future version. arrays <= 51 elements. This limit may or may not be lifted in a future version.
Matrixes can be indexed in each dimension only by a byte as well, this also means
their maximum size is 65536 elements (bytes).
Note that the various keywords for the data type and variable type (``byte``, ``word``, ``const``, etc.) Note that the various keywords for the data type and variable type (``byte``, ``word``, ``const``, etc.)