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https://github.com/kyleneideck/BackgroundMusic
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83 lines
3.6 KiB
C++
83 lines
3.6 KiB
C++
/*
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File: CACFNumber.cpp
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Abstract: CACFNumber.h
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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//=============================================================================
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// Includes
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//=============================================================================
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#include "CACFNumber.h"
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//=============================================================================
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// CACFNumber
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//=============================================================================
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Float32 CACFNumber::GetFixed32() const
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{
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SInt32 theFixedValue = GetSInt32();
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// this is a 16.16 value so convert it to a float
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Float32 theSign = theFixedValue < 0 ? -1.0f : 1.0f;
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theFixedValue *= (SInt32)theSign;
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Float32 theWholePart = (theFixedValue & 0x7FFF0000) >> 16;
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Float32 theFractPart = theFixedValue & 0x0000FFFF;
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theFractPart /= 65536.0f;
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return theSign * (theWholePart + theFractPart);
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}
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Float64 CACFNumber::GetFixed64() const
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{
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SInt64 theFixedValue = GetSInt64();
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// this is a 32.32 value so convert it to a double
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Float64 theSign = theFixedValue < 0 ? -1.0 : 1.0;
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theFixedValue *= (SInt64)theSign;
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Float64 theWholePart = (theFixedValue & 0x7FFFFFFF00000000LL) >> 32;
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Float64 theFractPart = theFixedValue & 0x00000000FFFFFFFFLL;
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theFractPart /= 4294967296.0;
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return theSign * (theWholePart + theFractPart);
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}
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