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SMILTime.cpp

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00001 /*
00002  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  * 1. Redistributions of source code must retain the above copyright
00008  *    notice, this list of conditions and the following disclaimer.
00009  * 2. Redistributions in binary form must reproduce the above copyright
00010  *    notice, this list of conditions and the following disclaimer in the
00011  *    documentation and/or other materials provided with the distribution.
00012  *
00013  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
00014  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00015  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00016  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
00017  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00018  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00019  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00020  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
00021  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00022  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00023  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
00024  */
00025 
00026 #include "config.h"
00027 #if ENABLE(SVG)
00028 #include "SMILTime.h"
00029 
00030 #include <float.h>
00031 
00032 using namespace WebCore;
00033 
00034 const double SMILTime::unresolvedValue = DBL_MAX;
00035 // Just a big value smaller than DBL_MAX. Our times are relative to 0, we don't really need the full range.
00036 const double SMILTime::indefiniteValue = FLT_MAX;    
00037 
00038 SMILTime WebCore::operator+(const SMILTime& a, const SMILTime& b) {     
00039     if (a.isUnresolved() || b.isUnresolved())
00040         return SMILTime::unresolved();
00041     if (a.isIndefinite() || b.isIndefinite())
00042         return SMILTime::indefinite();
00043     return a.value() + b.value();
00044 }
00045 
00046 SMILTime WebCore::operator-(const SMILTime& a, const SMILTime& b) {     
00047     if (a.isUnresolved() || b.isUnresolved())
00048         return SMILTime::unresolved();
00049     if (a.isIndefinite() || b.isIndefinite())
00050         return SMILTime::indefinite();
00051     return a.value() - b.value();
00052 }
00053 
00054 SMILTime WebCore::operator*(const SMILTime& a,  const SMILTime& b) {     
00055     if (a.isUnresolved() || b.isUnresolved())
00056         return SMILTime::unresolved();
00057     if (a.value() == 0 || b.value() == 0)
00058         return SMILTime(0);
00059     if (a.isIndefinite() || b.isIndefinite())
00060         return SMILTime::indefinite();
00061     return a.value() * b.value();
00062 }
00063 #endif
00064 

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