INT64 Convert to Signed 64-bit Integer

Usage

Converts the argument to an signed 64-bit Integer. The syntax for its use is

   y = int64(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 a signed 64-bit integer of [-2^63,2^63-1], the least significant 64 bits of x are used after conversion to a signed integer). Note that both NaN and Inf both map to 0.

Example

The following piece of code demonstrates several uses of int64. First, the routine uses

--> int64(100)

ans = 

 100 

--> int64(-100)

ans = 

 -100

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.

--> int64(40e9)

ans = 

 40000000000

In the next example, a positive double precision argument is passed in. The result is the signed integer that is closest to the argument.

--> int64(pi)

ans = 

 3

In the next example, a complex argument is passed in. The result is the signed integer that is closest to the real part of the argument.

--> int64(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.

--> int64('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.

--> int64({4})
Error: Cannot convert cell-arrays to any other type.