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 * endorse or promote products derived from this software without specific prior written
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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package com.oracle.truffle.llvm.types.floating.test;

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 LLVM80BitGetLongTest extends LLVM80BitTest {

    private static final int NR_RANDOM_NUMBERS = 10000;

    @Test
    public void testPositiveInfinty() {
        long positiveInfity = positiveInfinity().getLongValue();
        assertEquals(-9223372036854775808L, positiveInfity);
    }

    @Test
    public void testNegativeInfinty() {
        long negativeInfinity = negativeInfinity().getLongValue();
        assertEquals(-9223372036854775808L, negativeInfinity);
    }

    @Test
    public void testQNAN() {
        long nan = nan().getLongValue();
        assertEquals(-9223372036854775808L, nan);
    }

    @Test
    public void testZero() {
        long zero = LLVM80BitFloat.fromLong(0).getLongValue();
        assertEquals(0, zero);
    }

    @Test
    public void testOne() {
        long one = LLVM80BitFloat.fromLong(1).getLongValue();
        assertEquals(1, one);
    }

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

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

}