@polkadot/util
Version:
A collection of useful utilities for @polkadot
21 lines (20 loc) • 767 B
JavaScript
Object.defineProperty(exports, "__esModule", { value: true });
exports.u8aToFloat = u8aToFloat;
/**
* @name u8aToFloat
* @description Converts a Uint8Array value into the float (either 32 or 64-bit)
* representation.
*/
function u8aToFloat(value, { bitLength = 32, isLe = true } = {}) {
if (bitLength !== 32 && bitLength !== 64) {
throw new Error('Invalid bitLength provided, expected 32 or 64');
}
else if (value.length < (bitLength / 8)) {
throw new Error(`Invalid input buffer provided, expected at least ${bitLength / 8} bytes, found ${value.length}`);
}
const dv = new DataView(value.buffer, value.byteOffset);
return bitLength === 32
? dv.getFloat32(0, isLe)
: dv.getFloat64(0, isLe);
}
;