Brunobkr/llama.cpp_AlgMor24_github

1'use strict';2 3var $pow = require('math-intrinsics/pow');4 5module.exports = function bytesAsFloat32(rawBytes) {6	// return new $Float16Array(new $Uint8Array(rawBytes).buffer)[0];7	/*8        Let value be the byte elements of rawBytes concatenated and interpreted as a little-endian bit string encoding of an IEEE 754-2019 binary16 value.9        If value is a NaN, return NaN.10        Return the Number value that corresponds to value.11    */12 13	var bits = (rawBytes[1] << 8) | rawBytes[0];14 15	// extract sign, exponent, mantissa16	var sign = bits & 0x8000 ? -1 : 1;17	var exponent = (bits & 0x7C00) >> 10;18	var mantissa = bits & 0x03FF;19 20	// zero (±0)21	if (exponent === 0 && mantissa === 0) {22		return sign === 1 ? 0 : -0;23	}24 25	// infinities26	if (exponent === 0x1F && mantissa === 0) {27		return sign === 1 ? Infinity : -Infinity;28	}29 30	// NaN31	if (exponent === 0x1F && mantissa !== 0) {32		return NaN;33	}34 35	// remove bias (15)36	exponent -= 15;37 38	// subnormals39	if (exponent === -15) {40		// value = sign * (mantissa) * 2^(1-bias-10) = mantissa * 2^(-14-10)41		return sign * mantissa * $pow(2, -24);42	}43 44	// normals45	// value = sign * (1 + mantissa/2^10) * 2^exponent46	return sign * (1 + (mantissa * $pow(2, -10))) * $pow(2, exponent);47};48