#ifdef TEST

#include "unity.h"

#include "addition.h"

num carry[1];

unsigned int e = 8388608;

union {
    float floating;
    unsigned int integer;
} number[6];

void setUp(void)
{
}

void tearDown(void)
{
}

void test_addition_full_adder_nullplusnullgleichnull(void)
{
    num result[1];
    num expected = 0;

    full_adder(result, carry, 0, 0, 0);

    TEST_ASSERT_EQUAL_UINT(expected, result[0]);
}

void test_addition_full_adder_nullplusnullgleichnullmituebertrag(void)
{
    num result[1];
    num expected = 1;

    full_adder(result, carry, 0, 0, 1);

    TEST_ASSERT_EQUAL_UINT(expected, result[0]);
}

void test_addition_full_adder_zahlpluszahlgleichsummeohneuebertrag(void)
{
    num result[5];
    num expected[5] = { 0, 1, 1, 1, 1};

    full_adder((result+0), carry, 1, 0, 1);
    full_adder((result+1), carry, 0, 1, 0);
    full_adder((result+2), carry, 1, 0, 0);
    full_adder((result+3), carry, 0, 0, 1);
    full_adder((result+4), carry, 1, 1, 1);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
}

void test_addition_full_adder_completesumwithcarry(void)
{
    num result[5], carryresult[5];
    num expected[5] = { 0, 0, 1, 1, 0}, expectedcarry[5] = { 1, 1, 1, 0, 0};

    full_adder(result+0, carryresult+0, 0, 1, 1);
    full_adder(result+1, carryresult+1, 1, 1, 0);
    full_adder(result+2, carryresult+2, 1, 1, 1);
    full_adder(result+3, carryresult+3, 0, 1, 0);
    full_adder(result+4, carryresult+4, 0, 0, 0);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
    TEST_ASSERT_EQUAL_UINT(expectedcarry[0], carryresult[0]);
    TEST_ASSERT_EQUAL_UINT(expectedcarry[1], carryresult[1]);
    TEST_ASSERT_EQUAL_UINT(expectedcarry[2], carryresult[2]);
    TEST_ASSERT_EQUAL_UINT(expectedcarry[3], carryresult[3]);
    TEST_ASSERT_EQUAL_UINT(expectedcarry[4], carryresult[4]);
}

void test_addition_addition_basecasezeropluszeroequalzero(void)
{
    unsigned int result;
    unsigned int expected = 0;

    result = addition(0, 0);

    TEST_ASSERT_EQUAL_UINT(expected, result);
}

void test_addition_addition_basecaseonescolumns(void)
{
    unsigned int result[2];
    unsigned int expected[2] = { 1, 1 };

    result[0] = addition(1, 0);
    result[1] = addition(0, 1);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
}

void test_addition_addition_basecasetotenscolumns(void)
{
    unsigned int result[5];
    unsigned int expected[5] = { 3, 3, 2, 3, 3 };

    result[0] = addition(0, 3);
    result[1] = addition(1, 2);
    result[2] = addition(1, 1);
    result[3] = addition(2, 1);
    result[4] = addition(3, 0);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
}

void test_addition_addition_allunsignedinteger(void)
{
    unsigned int result[5];
    unsigned int expected[5] = { 88879736, __UINT32_MAX__, 66558, __UINT32_MAX__, 477905879 };

    result[0] = addition(13456275, 75423461);    
    result[1] = addition(4294967294, 1);    
    result[2] = addition(1023, 65535);
    result[3] = addition(0, 4294967295);
    result[4] = addition(54321567,423584312);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
}

void test_addition_signfloatingnumber(void)
{
    unsigned int result[2];
    unsigned int expected[2] = { 0, 1 };
    number[0].floating = 1, number[1].floating = -1;
    
    result[0] = sign(number[0].integer);
    result[1] = sign(number[1].integer);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
}

void test_addition_precisionfloatingnumber(void)
{
    unsigned int result[5];
    number[0].floating = 0, number[1].floating = -34753168, number[2].floating = 75613594, number[3].floating = -0.00000044568721, number[4].floating = 0.0000004796123;
    unsigned int expected[5] = { ( number[0].integer << 9) >> 9 , ( number[1].integer << 9) >> 9, ( number[2].integer << 9) >> 9, ( number[3].integer << 9) >> 9, ( number[4].integer << 9) >> 9};

    result[0] = precision( number[0].integer );
    result[1] = precision( number[1].integer );
    result[2] = precision( number[2].integer );
    result[3] = precision( number[3].integer );
    result[4] = precision( number[4].integer );

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
}

void test_addition_exponentfloatingnumber(void)
{
    unsigned int result[5];
    number[0].floating = 0, number[1].floating = -762134982, number[2].floating = 47621349, number[3].floating = -0.0000078961354, number[4].floating = 0.00001568943;
    unsigned int expected[5] = { ( number[0].integer << 1) >> 24 , ( number[1].integer << 1) >> 24, ( number[2].integer << 1) >> 24, ( number[3].integer << 1) >> 24, ( number[4].integer << 1) >> 24};

    result[0] = exponent( number[0].integer );
    result[1] = exponent( number[1].integer );
    result[2] = exponent( number[2].integer );
    result[3] = exponent( number[3].integer );
    result[4] = exponent( number[4].integer );

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
}

void test_addition_addition_precision_positivnumberlowerthan2tothepowerof24(void)
{
    unsigned int result[2];
    number[0].floating = 652468761.2348, number[1].floating = 2.675312546943, number[2].floating = 321647956212.2146, number[3].floating = 0.00000324567861, number[4].floating = number[0].floating + number[1].floating; number[5].floating = number[2].floating + number[3].floating;
    unsigned int expected[2] = { precision(number[4].integer), precision(number[5].integer) };

    unsigned int e0, e1, e2, e3, p0, p1, p2, p3;

    e0 = exponent(number[0].integer), e1 = exponent(number[1].integer), e2 = exponent(number[2].integer), e3 = exponent(number[3].integer);
    p0 = precision(number[0].integer) | e, p1 = precision(number[1].integer) | e, p2 = precision(number[2].integer) | e, p3 = precision(number[3].integer) | e;

    p1 >>= e0 - e1, p3 >>= e2 - e3;

    result[0] = addition_precision( p0, p1 ) ^ e;
    result[1] = addition_precision( p2, p3 ) ^ e;

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
}

void test_addition_output_numberwithsignexponentprecision(void)
{
    unsigned int result[5];
    number[0].floating = 1468921, number[1].floating = -32468127698, number[2].floating = 0.000000795311468, number[3].floating = -0.00000843214521, number[4].floating = 14;
    unsigned int expected[5] = { number[0].integer, number[1].integer, number[2].integer, number[3].integer, number[4].integer };

    unsigned int s0, s1, s2, s3, s4, e0, e1, e2, e3, e4, p0, p1, p2, p3, p4;

    s0 = sign(number[0].integer), s1 = sign(number[1].integer), s2 = sign(number[2].integer), s3 = sign(number[3].integer), s4 = sign(number[4].integer);
    e0 = exponent(number[0].integer), e1 = exponent(number[1].integer), e2 = exponent(number[2].integer), e3 = exponent(number[3].integer), e4 = exponent(number[4].integer);
    p0 = precision(number[0].integer), p1 = precision(number[1].integer), p2 = precision(number[2].integer), p3 = precision(number[3].integer), p4 = precision(number[4].integer);
    result[0] = output(s0, e0, p0);
    result[1] = output(s1, e1, p1);
    result[2] = output(s2, e2, p2);
    result[3] = output(s3, e3, p3);
    result[4] = output(s4, e4, p4);

    TEST_ASSERT_EQUAL_UINT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_UINT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_UINT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_UINT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_UINT(expected[4], result[4]);
}

void test_addition_addition_float_0plus0gleich0(void)
{
    float result;
    float expected = (float) 0.0;

    result = addition_float( (float) 0.0, (float) 0.0);

    TEST_ASSERT_EQUAL_FLOAT(expected, result);
}

void test_addition_addition_float_0plusnumbergleichnumber(void)
{
    float result[5];
    number[0].floating = 45672.56487, number[1].floating = -9531145672.467, number[2].floating = 91357634, number[3].floating = -0.0000000079533144, number[4].floating = 0.0756215698;
    float expected[5] = { number[0].floating, number[1].floating, number[2].floating, number[3].floating, number[4].floating };

    result[0] = addition_float(number[0].floating, (float) 0.0);
    result[1] = addition_float((float) 0.0, number[1].floating);
    result[2] = addition_float(number[2].floating, (float) 0.0);
    result[3] = addition_float((float) 0.0, number[3].floating);
    result[4] = addition_float((float) 0.0, number[4].floating);

    TEST_ASSERT_EQUAL_FLOAT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_FLOAT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_FLOAT(expected[2], result[2]);
    TEST_ASSERT_EQUAL_FLOAT(expected[3], result[3]);
    TEST_ASSERT_EQUAL_FLOAT(expected[4], result[4]);
}

void test_addition_addition_float_sumofpositivnumbers(void)
{
    float result[3];
    number[0].floating = 31972543.42176, number[1].floating = 423576.006432054, number[2].floating = 1346.4546124016, number[3].floating = 75620056402.5431, number[4].floating = 0.5351401453104, number[5].floating = 0.469178612;
    float expected[3] = { number[0].floating + number[1].floating, number[2].floating + number[3].floating, number[4].floating + number[5].floating };

    result[0] = addition_float(number[0].floating, number[1].floating);
    result[1] = addition_float(number[2].floating, number[3].floating);
    result[2] = addition_float(number[4].floating, number[5].floating);

    TEST_ASSERT_EQUAL_FLOAT(expected[0], result[0]);
    TEST_ASSERT_EQUAL_FLOAT(expected[1], result[1]);
    TEST_ASSERT_EQUAL_FLOAT(expected[2], result[2]);
}

#endif // TEST