/*
Compare two float arrays element-by-element using a tolerance.
Floating‑point values often differ slightly due to rounding,
so two numbers are considered "equal" when their absolute
difference is below the chosen threshold.
*/
// Compares two float arrays and returns true if all elements match within tolerance
function compareFloatArrays(a, b, tolerance) {
// If lengths differ, arrays cannot be equal
if (a.length !== b.length) {
return false;
}
// Compare each element using absolute difference
for (let i = 0; i < a.length; i++) {
const diff = Math.abs(a[i] - b[i]);
// If any element differs more than tolerance, arrays are not equal
if (diff > tolerance) {
return false;
}
}
// All elements matched within tolerance
return true;
}
// Prints the comparison result
function printComparison(result) {
if (result) {
console.log("Arrays are equal within tolerance.");
} else {
console.log("Arrays differ.");
}
}
// Example arrays
const floatArr1 = [
12314.9872,
3.14,
12387.91371,
8876.579013
];
const floatArr2 = [
12314.9872,
3.14,
12387.91372,
8876.579013
];
// Tolerance chosen for comparison
const tolerance = 0.001;
// Perform comparison
const result = compareFloatArrays(floatArr1, floatArr2, tolerance);
// Output result
printComparison(result);
/*
run:
Arrays are equal within tolerance.
*/
