// WITH_STDLIB
// TARGET_BACKEND: JS_IR
// FILE: main.js
Math.tanh = function tanh(x) {
    tanh.called = true;
    switch (x) {
        case -1: return -0.7615941559557649
        case 0: return 0
        case 1: return 0.7615941559557649
        case Infinity: return 1
    }
}

// FILE: main.kt
import kotlin.math.tanh

fun box(): String {
    assertEquals(tanh(-1.0), -0.7615941559557649)
    assertEquals(tanh(0.0), 0.0)
    assertEquals(tanh(1.0), 0.7615941559557649)
    assertEquals(tanh(Double.POSITIVE_INFINITY), 1.0)

    assertEquals(js("Math.tanh.called"), true)

    return "OK"
}
