Function assertAlmostEquals

deps/v8/test/mjsunit/math-exp-precision.js:38–47

(expected, actual, x)

var second_call_result = exp(Math.PI);

function assertAlmostEquals(expected, actual, x) {
  if (expected == 0 && actual == 0) return;  // OK
  if (expected == Number.POSITIVE_INFINITY &&
      actual == Number.POSITIVE_INFINITY) {
    return;  // OK
  }
  relative_diff = Math.abs(expected/actual - 1);
  assertTrue(relative_diff < 1e-12, "relative difference of " + relative_diff +
                                    " for input " + x);
}

var increment = Math.PI / 35;  // Roughly 0.1, but we want to try many
                               // different mantissae.