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 * conditions and the following disclaimer.
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package com.oracle.truffle.llvm.types.floating.test;

import static org.junit.Assert.assertEquals;

import org.junit.Test;

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

public class LLVM80BitFromLongTest {

    @Test
    public void testZero() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(0);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(false, 0, 0);
        assertEquals(expected, val);
    }

    @Test
    public void testOne() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(1);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(false, 0x3fff, Long.reverse(1));
        assertEquals(expected, val);
    }

    @Test
    public void testMinusOne() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(-1);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(true, 0x3fff, 0x8000000000000000L);
        assertEquals(expected, val);
    }

    @Test
    public void testRandom() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(5467892342341L);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(false, 0x4029, 0x9f22f8fbc8a00000L);
        assertEquals(expected, val);
    }

    @Test
    public void testHighNegativeValue() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(1L << 63);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(true, 0x403e, 0x8000000000000000L);
        assertEquals(expected, val);
    }

    @Test
    public void testMaxValue() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(Long.MAX_VALUE);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(false, 0x403d, 0xfffffffffffffffeL);
        assertEquals(expected, val);
    }

    @Test
    public void testMinValue() {
        LLVM80BitFloat val = LLVM80BitFloat.fromLong(Long.MIN_VALUE);
        LLVM80BitFloat expected = LLVM80BitFloat.fromRawValues(true, 0x403e, 0x8000000000000000L);
        assertEquals(expected, val);
    }

}