DataView.prototype.getFloat16()
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The getFloat16()
method of DataView
instances reads 2 bytes starting at the specified byte offset of this DataView
and interprets them as a 16-bit floating point number. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.
Try it
// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);
const view = new DataView(buffer);
view.setFloat16(1, Math.PI);
console.log(view.getFloat16(1));
// Expected output: 3.140625
Syntax
getFloat16(byteOffset)
getFloat16(byteOffset, littleEndian)
Parameters
byteOffset
-
The offset, in bytes, from the start of the view to read the data from.
littleEndian
Optional-
Indicates whether the data is stored in little- or big-endian format. If
false
orundefined
, a big-endian value is read.
Return value
A floating point number from -65504
to 65504
.
Exceptions
RangeError
-
Thrown if the
byteOffset
is set such that it would read beyond the end of the view.
Examples
Using getFloat16()
const { buffer } = new Uint8Array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
const dataview = new DataView(buffer);
console.log(dataview.getFloat16(1)); // 0.00001537799835205078
Specifications
Specification |
---|
Float16Array # sec-dataview.prototype.getfloat16 |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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getFloat16 |
Legend
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- Full support
- Full support
- No support
- No support