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package com.oracle.truffle.llvm.tests.types.floating;

import static org.junit.Assert.assertEquals;

import java.util.concurrent.ThreadLocalRandom;

import org.junit.Test;

import com.oracle.truffle.llvm.runtime.floating.LLVM80BitFloat;

public class LLVM80BitGetIntTest extends LLVM80BitTest {

    private static final int NR_RANDOM_NUMBERS = 10000;

    @Test
    public void testPositiveInfinty() {
        int positiveInfity = positiveInfinity().getIntValue();
        assertEquals(-2147483648, positiveInfity);
    }

    @Test
    public void testNegativeInfinty() {
        int negativeInfinity = negativeInfinity().getIntValue();
        assertEquals(-2147483648, negativeInfinity);
    }

    @Test
    public void testQNAN() {
        int nan = nan().getIntValue();
        assertEquals(-2147483648, nan);
    }

    @Test
    public void testZero() {
        int zero = LLVM80BitFloat.fromInt(0).getIntValue();
        assertEquals(0, zero);
    }

    @Test
    public void testOne() {
        int one = LLVM80BitFloat.fromInt(1).getIntValue();
        assertEquals(1, one);
    }

    @Test
    public void testMinusOne() {
        int oneInt = LLVM80BitFloat.fromInt(-1).getIntValue();
        long oneLong = LLVM80BitFloat.fromInt(-1).getLongValue();
        assertEquals(-1, oneInt);
        assertEquals(-1, oneLong);
    }

    @Test
    public void testRandomInt() {
        for (int i = 0; i < NR_RANDOM_NUMBERS; i++) {
            int nextInt = ThreadLocalRandom.current().nextInt();
            assertEquals(nextInt, LLVM80BitFloat.fromInt(nextInt).getIntValue());
            assertEquals(nextInt, LLVM80BitFloat.fromInt(nextInt).getLongValue());
        }
    }
}