sizeOf

Return the size (in bytes) of the canonical binary representation of a specified numeric type.

Usage

var sizeOf = require( '@stdlib/utils/size-of' );

sizeOf( dtype )

Returns the size (in bytes) of the canonical binary representation of a specified numeric type.

var s = sizeOf( 'int8' );
// returns 1

The following numeric types are supported:

  • float64: double-precision floating-point numbers
  • float32: single-precision floating-point numbers
  • float16: half-precision floating-point numbers
  • int32: 32-bit two's complement signed integers
  • uint32: 32-bit unsigned integers
  • int16: 16-bit two's complement signed integers
  • uint16: 16-bit unsigned integers
  • int8: 8-bit two's complement signed integers
  • uint8: 8-bit unsigned integers
  • uint8c: 8-bit unsigned integers clamped to 0-255
  • complex128: 128-bit complex numbers
  • complex64: 64-bit complex numbers

Examples

var sizeOf = require( '@stdlib/utils/size-of' );

var s = sizeOf( 'float64' );
// returns 8

s = sizeOf( 'float32' );
// returns 4

s = sizeOf( 'float16' );
// returns 2

s = sizeOf( 'int32' );
// returns 4

s = sizeOf( 'uint32' );
// returns 4

s = sizeOf( 'int16' );
// returns 2

s = sizeOf( 'uint16' );
// returns 2

s = sizeOf( 'int8' );
// returns 1

s = sizeOf( 'uint8' );
// returns 1

s = sizeOf( 'uint8c' );
// returns 1

s = sizeOf( 'complex128' );
// returns 16

s = sizeOf( 'complex64' );
// returns 8

CLI

Usage

Usage: sizeof [options] <dtype>

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.

Examples

$ sizeof int16
2