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%INT8 Convert to signed 8-bit integer. % I = INT8(X) converts the elements of the array X into signed 8-bit % integers. X can be any numeric object, such as a DOUBLE. The values % of an INT8 range from -128 to 127, or INTMIN('int8') to INTMAX('int8'). % Values outside this range saturate on overflow, namely they are mapped % to -128 or 127 if they are outside the range. If X is already a signed % 8-bit integer array, then INT8 has no effect. DOUBLE and SINGLE values % are rounded to the nearest INT8 value on conversion. % % Some arithmetic operations are defined for INT8 on interaction with % other INT8 arrays. For example, +, -, .*, ./, .\ and .^. % If at least one operand is scalar, *, /, \ and ^ are also defined. % INT8 arrays may also interact with scalar DOUBLE variables, including % constants, and the result of the operation is INT8. % INT8 arrays saturate on overflow in arithmetic. % % You can define or overload your own methods for the INT8 class (as you % can for any object) by placing the appropriately named method in an % @int8 directory within a directory on your path. % Type HELP DATATYPES for the names of the methods you can overload. % % A particularly efficient way to initialize a large INT8 arrays is: % % I = zeros(1000,1000,'int8') % % which creates a 1000x1000 element INT8 array, all of whose entries are % zero. You can also use ONES and EYE in a similar manner. % % Example: % X = 17 * ones(5,6,'int8') % % See also DOUBLE, SINGLE, DATATYPES, ISINTEGER, UINT8, UINT16, UINT32, % UINT64, INT16, INT32, INT64, INTMIN, INTMAX, EYE, ONES, ZEROS. % Copyright 1984-2004 The MathWorks, Inc. % Built-in function.