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/*
* Copyright (c) 2008-2009 Brent Fulgham <bfulgham@gmail.org>. All rights reserved.
*
* This source code is a modified version of the CoreFoundation sources released by Apple Inc. under
* the terms of the APSL version 2.0 (see below).
*
* For information about changes from the original Apple source release can be found by reviewing the
* source control system for the project at https://sourceforge.net/svn/?group_id=246198.
*
* The original license information is as follows:
*
* Copyright (c) 2008 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/* CFNumber.h
Copyright (c) 1999-2007, Apple Inc. All rights reserved.
*/
#if !defined(__COREFOUNDATION_CFNUMBER__)
#define __COREFOUNDATION_CFNUMBER__ 1
#include <CoreFoundation/CFBase.h>
CF_EXTERN_C_BEGIN
typedef const struct __CFBoolean * CFBooleanRef;
CF_EXPORT
const CFBooleanRef kCFBooleanTrue;
CF_EXPORT
const CFBooleanRef kCFBooleanFalse;
CF_EXPORT
CFTypeID CFBooleanGetTypeID(void);
CF_EXPORT
Boolean CFBooleanGetValue(CFBooleanRef boolean);
enum {
/* Fixed-width types */
kCFNumberSInt8Type = 1,
kCFNumberSInt16Type = 2,
kCFNumberSInt32Type = 3,
kCFNumberSInt64Type = 4,
kCFNumberFloat32Type = 5,
kCFNumberFloat64Type = 6, /* 64-bit IEEE 754 */
/* Basic C types */
kCFNumberCharType = 7,
kCFNumberShortType = 8,
kCFNumberIntType = 9,
kCFNumberLongType = 10,
kCFNumberLongLongType = 11,
kCFNumberFloatType = 12,
kCFNumberDoubleType = 13,
/* Other */
kCFNumberCFIndexType = 14,
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
kCFNumberNSIntegerType = 15,
kCFNumberCGFloatType = 16,
kCFNumberMaxType = 16
#else
kCFNumberMaxType = 14
#endif
};
typedef CFIndex CFNumberType;
typedef const struct __CFNumber * CFNumberRef;
CF_EXPORT
const CFNumberRef kCFNumberPositiveInfinity;
CF_EXPORT
const CFNumberRef kCFNumberNegativeInfinity;
CF_EXPORT
const CFNumberRef kCFNumberNaN;
CF_EXPORT
CFTypeID CFNumberGetTypeID(void);
/*
Creates a CFNumber with the given value. The type of number pointed
to by the valuePtr is specified by type. If type is a floating point
type and the value represents one of the infinities or NaN, the
well-defined CFNumber for that value is returned. If either of
valuePtr or type is an invalid value, the result is undefined.
*/
CF_EXPORT
CFNumberRef CFNumberCreate(CFAllocatorRef allocator, CFNumberType theType, const void *valuePtr);
/*
Returns the storage format of the CFNumber's value. Note that
this is not necessarily the type provided in CFNumberCreate().
*/
CF_EXPORT
CFNumberType CFNumberGetType(CFNumberRef number);
/*
Returns the size in bytes of the type of the number.
*/
CF_EXPORT
CFIndex CFNumberGetByteSize(CFNumberRef number);
/*
Returns true if the type of the CFNumber's value is one of
the defined floating point types.
*/
CF_EXPORT
Boolean CFNumberIsFloatType(CFNumberRef number);
/*
Copies the CFNumber's value into the space pointed to by
valuePtr, as the specified type. If conversion needs to take
place, the conversion rules follow human expectation and not
C's promotion and truncation rules. If the conversion is
lossy, or the value is out of range, false is returned. Best
attempt at conversion will still be in *valuePtr.
*/
CF_EXPORT
Boolean CFNumberGetValue(CFNumberRef number, CFNumberType theType, void *valuePtr);
/*
Compares the two CFNumber instances. If conversion of the
types of the values is needed, the conversion and comparison
follow human expectations and not C's promotion and comparison
rules. Negative zero compares less than positive zero.
Positive infinity compares greater than everything except
itself, to which it compares equal. Negative infinity compares
less than everything except itself, to which it compares equal.
Unlike standard practice, if both numbers are NaN, then they
compare equal; if only one of the numbers is NaN, then the NaN
compares greater than the other number if it is negative, and
smaller than the other number if it is positive. (Note that in
CFEqual() with two CFNumbers, if either or both of the numbers
is NaN, true is returned.)
*/
CF_EXPORT
CFComparisonResult CFNumberCompare(CFNumberRef number, CFNumberRef otherNumber, void *context);
CF_EXTERN_C_END
#endif /* ! __COREFOUNDATION_CFNUMBER__ */