///////////////////////////////////////////////////////////////////////////

//

// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas

// Digital Ltd. LLC

// 

// All rights reserved.

// 

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// *       Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// *       Redistributions in binary form must reproduce the above

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// in the documentation and/or other materials provided with the

// distribution.

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// its contributors may be used to endorse or promote products derived

// from this software without specific prior written permission. 

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

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///////////////////////////////////////////////////////////////////////////

#include <testFun.h>

#include "ImathFun.h"

#include <iostream>

#include <assert.h>

#include <stdio.h>

using namespace std;

#if ULONG_MAX == 18446744073709551615LU

    typedef      long unsigned int Int64;

#else

    typedef long long unsigned int Int64;

#endif

void

testf (float f)

{

    printf ("\n");

    float sf = IMATH_INTERNAL_NAMESPACE::succf (f);

    float pf = IMATH_INTERNAL_NAMESPACE::predf (f);

    float spf = IMATH_INTERNAL_NAMESPACE::succf (IMATH_INTERNAL_NAMESPACE::predf (f));

    float psf = IMATH_INTERNAL_NAMESPACE::predf (IMATH_INTERNAL_NAMESPACE::succf (f));

    printf ("f %.9g\n", f);

    printf ("sf %.9g\n", sf);

    printf ("pf %.9g\n", pf);

    printf ("spf %.9g\n", spf);

    printf ("psf %.9g\n", psf);

}

void

testd (double d)

{

    printf ("\n");

    double sd = IMATH_INTERNAL_NAMESPACE::succd (d);

    double pd = IMATH_INTERNAL_NAMESPACE::predd (d);

    double spd = IMATH_INTERNAL_NAMESPACE::succd (IMATH_INTERNAL_NAMESPACE::predd (d));

    double psd = IMATH_INTERNAL_NAMESPACE::predd (IMATH_INTERNAL_NAMESPACE::succd (d));

    printf ("d %.18lg\n", d);

    printf ("sd %.18lg\n", sd);

    printf ("pd %.18lg\n", pd);

    printf ("spd %.18lg\n", spd);

    printf ("psd %.18lg\n", psd);

}

void

testFun ()

{

    cout << "Testing functions in ImathFun.h" << endl;

    cout << "floor" << endl;

    assert (IMATH_INTERNAL_NAMESPACE::floor ( 0.0f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::floor ( 0.5f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::floor (-0.5f) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::floor ( 1.0f) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::floor (-1.0f) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::floor ( 1.5f) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::floor (-1.5f) == -2);

    cout << "ceil" << endl;

    assert (IMATH_INTERNAL_NAMESPACE::ceil ( 0.0f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::ceil ( 0.5f) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::ceil (-0.5f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::ceil ( 1.0f) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::ceil (-1.0f) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::ceil ( 1.5f) ==  2);

    assert (IMATH_INTERNAL_NAMESPACE::ceil (-1.5f) == -1);

    cout << "trunc" << endl;

    assert (IMATH_INTERNAL_NAMESPACE::trunc ( 0.0f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::trunc ( 0.5f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::trunc (-0.5f) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::trunc ( 1.0f) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::trunc (-1.0f) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::trunc ( 1.5f) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::trunc (-1.5f) == -1);

    cout << "divs / mods" << endl;

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 5,  2) ==  2 && IMATH_INTERNAL_NAMESPACE::mods ( 5,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 4,  2) ==  2 && IMATH_INTERNAL_NAMESPACE::mods ( 4,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 3,  2) ==  1 && IMATH_INTERNAL_NAMESPACE::mods ( 3,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 2,  2) ==  1 && IMATH_INTERNAL_NAMESPACE::mods ( 2,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 1,  2) ==  0 && IMATH_INTERNAL_NAMESPACE::mods ( 1,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 0,  2) ==  0 && IMATH_INTERNAL_NAMESPACE::mods ( 0,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-1,  2) ==  0 && IMATH_INTERNAL_NAMESPACE::mods (-1,  2) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-2,  2) == -1 && IMATH_INTERNAL_NAMESPACE::mods (-2,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-3,  2) == -1 && IMATH_INTERNAL_NAMESPACE::mods (-3,  2) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-4,  2) == -2 && IMATH_INTERNAL_NAMESPACE::mods (-4,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-5,  2) == -2 && IMATH_INTERNAL_NAMESPACE::mods (-5,  2) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 5, -2) == -2 && IMATH_INTERNAL_NAMESPACE::mods ( 5, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 4, -2) == -2 && IMATH_INTERNAL_NAMESPACE::mods ( 4, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 3, -2) == -1 && IMATH_INTERNAL_NAMESPACE::mods ( 3, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 2, -2) == -1 && IMATH_INTERNAL_NAMESPACE::mods ( 2, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 1, -2) ==  0 && IMATH_INTERNAL_NAMESPACE::mods ( 1, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divs ( 0, -2) ==  0 && IMATH_INTERNAL_NAMESPACE::mods ( 0, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-1, -2) ==  0 && IMATH_INTERNAL_NAMESPACE::mods (-1, -2) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-2, -2) ==  1 && IMATH_INTERNAL_NAMESPACE::mods (-2, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-3, -2) ==  1 && IMATH_INTERNAL_NAMESPACE::mods (-3, -2) == -1);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-4, -2) ==  2 && IMATH_INTERNAL_NAMESPACE::mods (-4, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divs (-5, -2) ==  2 && IMATH_INTERNAL_NAMESPACE::mods (-5, -2) == -1);

    cout << "divp / modp" << endl;

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 5,  2) ==  2 && IMATH_INTERNAL_NAMESPACE::modp ( 5,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 4,  2) ==  2 && IMATH_INTERNAL_NAMESPACE::modp ( 4,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 3,  2) ==  1 && IMATH_INTERNAL_NAMESPACE::modp ( 3,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 2,  2) ==  1 && IMATH_INTERNAL_NAMESPACE::modp ( 2,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 1,  2) ==  0 && IMATH_INTERNAL_NAMESPACE::modp ( 1,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 0,  2) ==  0 && IMATH_INTERNAL_NAMESPACE::modp ( 0,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-1,  2) == -1 && IMATH_INTERNAL_NAMESPACE::modp (-1,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-2,  2) == -1 && IMATH_INTERNAL_NAMESPACE::modp (-2,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-3,  2) == -2 && IMATH_INTERNAL_NAMESPACE::modp (-3,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-4,  2) == -2 && IMATH_INTERNAL_NAMESPACE::modp (-4,  2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-5,  2) == -3 && IMATH_INTERNAL_NAMESPACE::modp (-5,  2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 5, -2) == -2 && IMATH_INTERNAL_NAMESPACE::modp ( 5, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 4, -2) == -2 && IMATH_INTERNAL_NAMESPACE::modp ( 4, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 3, -2) == -1 && IMATH_INTERNAL_NAMESPACE::modp ( 3, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 2, -2) == -1 && IMATH_INTERNAL_NAMESPACE::modp ( 2, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 1, -2) ==  0 && IMATH_INTERNAL_NAMESPACE::modp ( 1, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp ( 0, -2) ==  0 && IMATH_INTERNAL_NAMESPACE::modp ( 0, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-1, -2) ==  1 && IMATH_INTERNAL_NAMESPACE::modp (-1, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-2, -2) ==  1 && IMATH_INTERNAL_NAMESPACE::modp (-2, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-3, -2) ==  2 && IMATH_INTERNAL_NAMESPACE::modp (-3, -2) ==  1);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-4, -2) ==  2 && IMATH_INTERNAL_NAMESPACE::modp (-4, -2) ==  0);

    assert (IMATH_INTERNAL_NAMESPACE::divp (-5, -2) ==  3 && IMATH_INTERNAL_NAMESPACE::modp (-5, -2) ==  1);

    cout << "successor, predecessor" << endl;

    testf (0);

    testf (0.0 * -1.0);

    testf (1);

    testf (-1);

    testf (16);

    testf (7);

    testf (0.7);

    union {float f; int i;} u;

    u.i = 0x7f800000; //  inf

    testf (u.f);

    u.i = 0x7f800001; //  nan

    testf (u.f);

    u.i = 0x7f7fffff; //  FLT_MAX

    testf (u.f);

    u.i = 0xff7fffff; // -FLT_MAX

    testf (u.f);

    testd (0);

    testd (0.0 * -1.0);

    testd (1);

    testd (-1);

    testd (16);

    testd (7);

    testd (0.7);

    union {double d; Int64 i;} v;

    v.i = 0x7ff0000000000000ULL; //  inf

    testd (v.d);

    v.i = 0x7ff0000000000001ULL; //  NAN

    testd (v.d);

    v.i = 0x7fefffffffffffffULL; //  FLT_MAX

    testd (v.d);

    v.i = 0xffefffffffffffffULL; // -FLT_MAX

    testd (v.d);

    cout << "ok\n" << endl;

}