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package org.graalvm.compiler.jtt.lang;

import org.graalvm.compiler.jtt.JTTTest;
import org.graalvm.compiler.options.OptionValues;
import org.graalvm.compiler.serviceprovider.JavaVersionUtil;

import jdk.vm.ci.meta.ResolvedJavaMethod;

public abstract class UnaryMath extends JTTTest {

    private static final long STEP = Long.MAX_VALUE / 100_000;

    
Tests a unary Math method on a wide range of values.
/** * Tests a unary {@link Math} method on a wide range of values. */
void testManyValues(OptionValues options, ResolvedJavaMethod method) throws AssertionError { if (JavaVersionUtil.JAVA_SPEC > 8) { /* * GR-8276: Allow for variance on JVMCI > 8 until a JVMCI version that includes * https://github.com/graalvm/graal-jvmci-8/commit/ * c86fb66f86b8d52a08dd2495d34879d3730f9987 or Graal has stubs that a monotonic with * other HotSpot implementations of these Math routines. */ ulpDelta = 2D; } else { /* * Forces the assertion message shows the ulps by which a computed result is wrong. */ ulpDelta = 0D; } Object receiver = null; long testIteration = 0; for (long l = Long.MIN_VALUE;; l += STEP) { double d = Double.longBitsToDouble(l); Result expect = executeExpected(method, receiver, d); try { testAgainstExpected(options, method, expect, EMPTY, receiver, d); testIteration++; } catch (AssertionError e) { throw new AssertionError(String.format("%d: While testing %g [long: %d, hex: %x]", testIteration, d, l, l), e); } if (Long.MAX_VALUE - STEP < l) { break; } } } }