MATLAB Programming

2 Data Types
the two equally nearby integers, MATLAB chooses the one for which the
absolute value is larger in magnitude:
x = 325.499; x = x + .001;
int16(x)
int16(x)
ans = ans =
325 326
If you need to round a number using a rounding scheme other than the
default, MATLAB provides four rounding functions: round, fix, floor, and
ceil. Inthisexample,thefix function enables you to override the default
and round towards zero when the fractional part of a number is .5:
x = 325.5;
int16(fix(x))
ans =
325
Arithmetic operations that involve both integers and floating-point always
result in an integer data type. MATLAB rounds the result, when necessary,
according to the default rounding algorithm. The example below yields an
exact answer of 1426.75 which MATLAB then rounds to the next highest
integer:
int16(325) * 4.39
ans =
1427
The integer conversion functions are also useful when converting other data
types, such as strings, to integers:
str = 'Hello World';
int8(str)
ans =
72 101 108 108 111 32 87 111 114 108 100
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