1 /*

     2  * Copyright (C) 2008 Apple Inc. All Rights Reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. Redistributions in binary form must reproduce the above copyright

    10  *    notice, this list of conditions and the following disclaimer in the

    11  *    documentation and/or other materials provided with the distribution.

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

    14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

    17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

    24  */

    25 

    26 #include "config.h"

    27 #if ENABLE(SVG)

    28 #include "SMILTime.h"

    29 

    30 #include <float.h>

    31 

    32 using namespace WebCore;

    33 

    34 const double SMILTime::unresolvedValue = DBL_MAX;

    35 // Just a big value smaller than DBL_MAX. Our times are relative to 0, we don't really need the full range.

    36 const double SMILTime::indefiniteValue = FLT_MAX;    

    37 

    38 SMILTime WebCore::operator+(const SMILTime& a, const SMILTime& b)

    39 {

    40     if (a.isUnresolved() || b.isUnresolved())

    41         return SMILTime::unresolved();

    42     if (a.isIndefinite() || b.isIndefinite())

    43         return SMILTime::indefinite();

    44     return a.value() + b.value();

    45 }

    46 

    47 SMILTime WebCore::operator-(const SMILTime& a, const SMILTime& b)

    48 {

    49     if (a.isUnresolved() || b.isUnresolved())

    50         return SMILTime::unresolved();

    51     if (a.isIndefinite() || b.isIndefinite())

    52         return SMILTime::indefinite();

    53     return a.value() - b.value();

    54 }

    55 

    56 SMILTime WebCore::operator*(const SMILTime& a,  const SMILTime& b)

    57 {

    58     if (a.isUnresolved() || b.isUnresolved())

    59         return SMILTime::unresolved();

    60     if (a.value() == 0 || b.value() == 0)

    61         return SMILTime(0);

    62     if (a.isIndefinite() || b.isIndefinite())

    63         return SMILTime::indefinite();

    64     return a.value() * b.value();

    65 }

    66 #endif

    67