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