Use ULP based comparison.

test/utils.js

@@ -36,11 +36,26 @@ export function almostEqual(a, b, criteria) {
   }
 }
 
-export function checkValue(
-    output, expected, criteria = opFp32AccuracyCriteria) {
+function getBitwise(value) {
+  const buffer = new ArrayBuffer(4);
+  const view = new DataView(buffer);
+  view.setFloat32(0, value);
+  return view.getInt32(0);
+}
+
+export function compareUlp(a, b, nulp = 1, format = "float32") {
+  assert(format === "float32", `Format ${format} is not supported.`);
+  const aBitwise = getBitwise(a);
+  const bBitwise = getBitwise(b);
+  let distance = aBitwise - bBitwise;
+  distance = distance > 0 ? distance : -distance;
+  return distance > nulp;
+}
+
+export function checkValue(output, expected) {
   assert.isTrue(output.length === expected.length);
   for (let i = 0; i < output.length; ++i) {
-    assert.isTrue(almostEqual(output[i], expected[i], criteria));
+    assert.isTrue(!compareUlp(output[i], expected[i]));
   }
 }