Section: Type Conversion Functions
y = uint64(x)
where x
is an n
-dimensional numerical array. Conversion
follows the general C rules (e.g., if x
is outside the normal
range for an unsigned 64-bit integer of [0,2^64-1]
, the least
significant 64 bits of x
are used after conversion to an integer).
Note that both NaN
and Inf
both map to 0.
uint64
.
--> uint64(200) ans = 200
In the next example, an integer outside the range of the type is passed in. The result is the 64 least significant bits of the argument.
--> uint64(40e9) ans = 40000000000
In the next example, a negative integer is passed in. The result is the 64 least significant bits of the argument, \emph{after} taking the 2's complement.
--> uint64(-100) ans = 18446744073709551516
In the next example, a positive double precision argument is passed in. The result is the unsigned integer that is closest to the argument.
--> uint64(pi) ans = 3
In the next example, a complex argument is passed in. The result is the unsigned integer that is closest to the real part of the argument.
--> uint64(5+2*i) ans = 5
In the next example, a string argument is passed in. The string argument is converted into an integer array corresponding to the ASCII values of each character.
--> uint64('helo') ans = 104 101 108 111
In the last example, a cell-array is passed in. For cell-arrays and structure arrays, the result is an error.
--> uint64({4}) Error: Cannot convert cell-arrays to any other type.