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CFNumber.c
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/*
* Copyright (c) 2008-2012 Brent Fulgham <[email protected]>. All rights reserved.
* Copyright (c) 2009 Grant Erickson <[email protected]>. 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) 2011 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.c
Copyright (c) 1999-2011, Apple Inc. All rights reserved.
Responsibility: Ali Ozer
*/
#include <CoreFoundation/CFNumber.h>
#include <CoreFoundation/CoreFoundation_Prefix.h>
#include "CFInternal.h"
#include <CoreFoundation/CFPriv.h>
#include <math.h>
#include <float.h>
#if DEPLOYMENT_TARGET_WINDOWS
#define isnan(A) _isnan(A)
#define isinf(A) !_finite(A)
#define copysign(A, B) _copysign(A, B)
#elif DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED || DEPLOYMENT_TARGET_LINUX || DEPLOYMENT_TARGET_FREEBSD
#else
#error Unknown or unspecified DEPLOYMENT_TARGET
#endif
#define __CFAssertIsBoolean(cf) __CFGenericValidateType(cf, __kCFBooleanTypeID)
struct __CFBoolean {
CFRuntimeBase _base;
};
static struct __CFBoolean __kCFBooleanTrue = {
INIT_CFRUNTIME_BASE()
};
const CFBooleanRef kCFBooleanTrue = &__kCFBooleanTrue;
static struct __CFBoolean __kCFBooleanFalse = {
INIT_CFRUNTIME_BASE()
};
const CFBooleanRef kCFBooleanFalse = &__kCFBooleanFalse;
static CFStringRef __CFBooleanCopyDescription(CFTypeRef cf) {
CFBooleanRef boolean = (CFBooleanRef)cf;
return CFStringCreateWithFormat(kCFAllocatorSystemDefault, NULL, CFSTR("<CFBoolean %p [%p]>{value = %s}"), cf, CFGetAllocator(cf), (boolean == kCFBooleanTrue) ? "true" : "false");
}
__private_extern__ CFStringRef __CFBooleanCopyFormattingDescription(CFTypeRef cf, CFDictionaryRef formatOptions) {
CFBooleanRef boolean = (CFBooleanRef)cf;
return (CFStringRef)CFRetain((boolean == kCFBooleanTrue) ? CFSTR("true") : CFSTR("false"));
}
static CFHashCode __CFBooleanHash(CFTypeRef cf) {
CFBooleanRef boolean = (CFBooleanRef)cf;
return (boolean == kCFBooleanTrue) ? _CFHashInt(1) : _CFHashInt(0);
}
static void __CFBooleanDeallocate(CFTypeRef cf) {
CFAssert(false, __kCFLogAssertion, "Deallocated CFBoolean!");
}
static CFTypeID __kCFBooleanTypeID = _kCFRuntimeNotATypeID;
static const CFRuntimeClass __CFBooleanClass = {
0,
"CFBoolean",
NULL, // init
NULL, // copy
__CFBooleanDeallocate,
NULL,
__CFBooleanHash,
__CFBooleanCopyFormattingDescription,
__CFBooleanCopyDescription
};
__private_extern__ void __CFBooleanInitialize(void) {
__kCFBooleanTypeID = _CFRuntimeRegisterClass(&__CFBooleanClass);
_CFRuntimeSetInstanceTypeID(&__kCFBooleanTrue, __kCFBooleanTypeID);
__kCFBooleanTrue._base._cfisa = __CFISAForTypeID(__kCFBooleanTypeID);
_CFRuntimeSetInstanceTypeID(&__kCFBooleanFalse, __kCFBooleanTypeID);
__kCFBooleanFalse._base._cfisa = __CFISAForTypeID(__kCFBooleanTypeID);
}
CFTypeID CFBooleanGetTypeID(void) {
return __kCFBooleanTypeID;
}
Boolean CFBooleanGetValue(CFBooleanRef boolean) {
CF_OBJC_FUNCDISPATCH0(__kCFBooleanTypeID, Boolean, boolean, "boolValue");
return (boolean == kCFBooleanTrue) ? true : false;
}
/*** CFNumber ***/
#define OLD_CRAP_TOO 0
#if OLD_CRAP_TOO
typedef union {
SInt32 valSInt32;
int64_t valSInt64;
Float32 valFloat32;
Float64 valFloat64;
} __CFNumberValue_old;
struct __CFNumber_old { /* Only as many bytes as necessary are allocated */
CFRuntimeBase _base;
__CFNumberValue_old value;
};
static Boolean __CFNumberEqual_old(CFTypeRef cf1, CFTypeRef cf2);
static CFHashCode __CFNumberHash_old(CFTypeRef cf);
static CFStringRef __CFNumberCopyDescription_old(CFTypeRef cf);
__private_extern__ CFStringRef __CFNumberCopyFormattingDescriptionAsFloat64_old(CFTypeRef cf);
static CFStringRef __CFNumberCopyFormattingDescription_old(CFTypeRef cf, CFDictionaryRef formatOptions);
static struct __CFNumber_old * CFNumberCreate_old(CFAllocatorRef allocator, CFNumberType type, const void *valuePtr);
static CFNumberType CFNumberGetType_old(struct __CFNumber_old * number);
static CFIndex CFNumberGetByteSize_old(struct __CFNumber_old * number);
static Boolean CFNumberIsFloatType_old(struct __CFNumber_old * number);
static Boolean CFNumberGetValue_old(struct __CFNumber_old * number, CFNumberType type, void *valuePtr);
static CFComparisonResult CFNumberCompare_old(struct __CFNumber_old * number1, struct __CFNumber_old * number2, void *context);
#endif
#define __CFAssertIsNumber(cf) __CFGenericValidateType(cf, __kCFNumberTypeID)
#define __CFAssertIsValidNumberType(type) CFAssert2((0 < type && type <= kCFNumberMaxType) || (type == kCFNumberSInt128Type), __kCFLogAssertion, "%s(): bad CFNumber type %d", __PRETTY_FUNCTION__, type);
/* The IEEE bit patterns... Also have:
0x7f800000 float +Inf
0x7fc00000 float NaN
0xff800000 float -Inf
*/
#define BITSFORDOUBLENAN ((uint64_t)0x7ff8000000000000ULL)
#define BITSFORDOUBLEPOSINF ((uint64_t)0x7ff0000000000000ULL)
#define BITSFORDOUBLENEGINF ((uint64_t)0xfff0000000000000ULL)
#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED || DEPLOYMENT_TARGET_LINUX || DEPLOYMENT_TARGET_FREEBSD
#define FLOAT_POSITIVE_2_TO_THE_64 0x1.0p+64L
#define FLOAT_NEGATIVE_2_TO_THE_127 -0x1.0p+127L
#define FLOAT_POSITIVE_2_TO_THE_127 0x1.0p+127L
#elif DEPLOYMENT_TARGET_WINDOWS
#define FLOAT_POSITIVE_2_TO_THE_64 18446744073709551616.0
#define FLOAT_NEGATIVE_2_TO_THE_127 -170141183460469231731687303715884105728.0
#define FLOAT_POSITIVE_2_TO_THE_127 170141183460469231731687303715884105728.0
#else
#error Unknown or unspecified DEPLOYMENT_TARGET
#endif
typedef struct { // NOTE WELL: these two fields may switch position someday, do not use '= {high, low}' -style initialization
int64_t high;
uint64_t low;
} CFSInt128Struct;
enum {
kCFNumberSInt128Type = 17
};
static uint8_t isNeg128(const CFSInt128Struct *in) {
return in->high < 0;
}
static CFComparisonResult cmp128(const CFSInt128Struct *in1, const CFSInt128Struct *in2) {
if (in1->high < in2->high) return kCFCompareLessThan;
if (in1->high > in2->high) return kCFCompareGreaterThan;
if (in1->low < in2->low) return kCFCompareLessThan;
if (in1->low > in2->low) return kCFCompareGreaterThan;
return kCFCompareEqualTo;
}
// allows out to be the same as in1 or in2
static void add128(CFSInt128Struct *out, CFSInt128Struct *in1, CFSInt128Struct *in2) {
CFSInt128Struct tmp;
tmp.low = in1->low + in2->low;
tmp.high = in1->high + in2->high;
if (UINT64_MAX - in1->low < in2->low) {
tmp.high++;
}
*out = tmp;
}
// allows out to be the same as in
static void neg128(CFSInt128Struct *out, CFSInt128Struct *in) {
uint64_t tmplow = ~in->low;
out->low = tmplow + 1;
out->high = ~in->high;
if (UINT64_MAX == tmplow) {
out->high++;
}
}
static const CFSInt128Struct powersOf10[] = {
{ 0x4B3B4CA85A86C47ALL, 0x098A224000000000ULL },
{ 0x0785EE10D5DA46D9LL, 0x00F436A000000000ULL },
{ 0x00C097CE7BC90715LL, 0xB34B9F1000000000ULL },
{ 0x0013426172C74D82LL, 0x2B878FE800000000ULL },
{ 0x0001ED09BEAD87C0LL, 0x378D8E6400000000ULL },
{ 0x0000314DC6448D93LL, 0x38C15B0A00000000ULL },
{ 0x000004EE2D6D415BLL, 0x85ACEF8100000000ULL },
{ 0x0000007E37BE2022LL, 0xC0914B2680000000ULL },
{ 0x0000000C9F2C9CD0LL, 0x4674EDEA40000000ULL },
{ 0x00000001431E0FAELL, 0x6D7217CAA0000000ULL },
{ 0x00000000204FCE5ELL, 0x3E25026110000000ULL },
{ 0x00000000033B2E3CLL, 0x9FD0803CE8000000ULL },
{ 0x000000000052B7D2LL, 0xDCC80CD2E4000000ULL },
{ 0x0000000000084595LL, 0x161401484A000000ULL },
{ 0x000000000000D3C2LL, 0x1BCECCEDA1000000ULL },
{ 0x000000000000152DLL, 0x02C7E14AF6800000ULL },
{ 0x000000000000021ELL, 0x19E0C9BAB2400000ULL },
{ 0x0000000000000036LL, 0x35C9ADC5DEA00000ULL },
{ 0x0000000000000005LL, 0x6BC75E2D63100000ULL },
{ 0x0000000000000000LL, 0x8AC7230489E80000ULL },
{ 0x0000000000000000LL, 0x0DE0B6B3A7640000ULL },
{ 0x0000000000000000LL, 0x016345785D8A0000ULL },
{ 0x0000000000000000LL, 0x002386F26FC10000ULL },
{ 0x0000000000000000LL, 0x00038D7EA4C68000ULL },
{ 0x0000000000000000LL, 0x00005AF3107A4000ULL },
{ 0x0000000000000000LL, 0x000009184E72A000ULL },
{ 0x0000000000000000LL, 0x000000E8D4A51000ULL },
{ 0x0000000000000000LL, 0x000000174876E800ULL },
{ 0x0000000000000000LL, 0x00000002540BE400ULL },
{ 0x0000000000000000LL, 0x000000003B9ACA00ULL },
{ 0x0000000000000000LL, 0x0000000005F5E100ULL },
{ 0x0000000000000000LL, 0x0000000000989680ULL },
{ 0x0000000000000000LL, 0x00000000000F4240ULL },
{ 0x0000000000000000LL, 0x00000000000186A0ULL },
{ 0x0000000000000000LL, 0x0000000000002710ULL },
{ 0x0000000000000000LL, 0x00000000000003E8ULL },
{ 0x0000000000000000LL, 0x0000000000000064ULL },
{ 0x0000000000000000LL, 0x000000000000000AULL },
{ 0x0000000000000000LL, 0x0000000000000001ULL },
};
static const CFSInt128Struct neg_powersOf10[] = {
{ 0xB4C4B357A5793B85LL, 0xF675DDC000000000ULL },
{ 0xF87A11EF2A25B926LL, 0xFF0BC96000000000ULL },
{ 0xFF3F68318436F8EALL, 0x4CB460F000000000ULL },
{ 0xFFECBD9E8D38B27DLL, 0xD478701800000000ULL },
{ 0xFFFE12F64152783FLL, 0xC872719C00000000ULL },
{ 0xFFFFCEB239BB726CLL, 0xC73EA4F600000000ULL },
{ 0xFFFFFB11D292BEA4LL, 0x7A53107F00000000ULL },
{ 0xFFFFFF81C841DFDDLL, 0x3F6EB4D980000000ULL },
{ 0xFFFFFFF360D3632FLL, 0xB98B1215C0000000ULL },
{ 0xFFFFFFFEBCE1F051LL, 0x928DE83560000000ULL },
{ 0xFFFFFFFFDFB031A1LL, 0xC1DAFD9EF0000000ULL },
{ 0xFFFFFFFFFCC4D1C3LL, 0x602F7FC318000000ULL },
{ 0xFFFFFFFFFFAD482DLL, 0x2337F32D1C000000ULL },
{ 0xFFFFFFFFFFF7BA6ALL, 0xE9EBFEB7B6000000ULL },
{ 0xFFFFFFFFFFFF2C3DLL, 0xE43133125F000000ULL },
{ 0xFFFFFFFFFFFFEAD2LL, 0xFD381EB509800000ULL },
{ 0xFFFFFFFFFFFFFDE1LL, 0xE61F36454DC00000ULL },
{ 0xFFFFFFFFFFFFFFC9LL, 0xCA36523A21600000ULL },
{ 0xFFFFFFFFFFFFFFFALL, 0x9438A1D29CF00000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0x7538DCFB76180000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xF21F494C589C0000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFE9CBA87A2760000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFDC790D903F0000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFC72815B398000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFA50CEF85C000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFF6E7B18D6000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFF172B5AF000ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFE8B7891800ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFDABF41C00ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFC4653600ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFA0A1F00ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFF676980ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFF0BDC0ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFE7960ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFD8F0ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFC18ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFF9CULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFF6ULL },
{ 0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFULL },
};
static void emit128(char *buffer, const CFSInt128Struct *in, Boolean forcePlus) {
CFSInt128Struct tmp = *in;
if (isNeg128(&tmp)) {
neg128(&tmp, &tmp);
*buffer++ = '-';
} else if (forcePlus) {
*buffer++ = '+';
}
Boolean doneOne = false;
int idx;
for (idx = 0; idx < sizeof(powersOf10) / sizeof(powersOf10[0]); idx++) {
int count = 0;
while (cmp128(&powersOf10[idx], &tmp) <= 0) {
add128(&tmp, &tmp, (CFSInt128Struct *)&neg_powersOf10[idx]);
count++;
}
if (0 != count || doneOne) {
*buffer++ = '0' + count;
doneOne = true;
}
}
if (!doneOne) {
*buffer++ = '0';
}
*buffer = '\0';
}
static void cvtSInt128ToFloat64(Float64 *out, const CFSInt128Struct *in) {
// switching to a positive number results in better accuracy
// for negative numbers close to zero, because the multiply
// of -1 by 2^64 (scaling the Float64 high) is avoided
Boolean wasNeg = false;
CFSInt128Struct tmp = *in;
if (isNeg128(&tmp)) {
neg128(&tmp, &tmp);
wasNeg = true;
}
Float64 d = (Float64)tmp.high * FLOAT_POSITIVE_2_TO_THE_64 + (Float64)tmp.low;
if (wasNeg) d = -d;
*out = d;
}
static void cvtFloat64ToSInt128(CFSInt128Struct *out, const Float64 *in) {
CFSInt128Struct i;
Float64 d = *in;
if (d < FLOAT_NEGATIVE_2_TO_THE_127) {
i.high = 0x8000000000000000LL;
i.low = 0x0000000000000000ULL;
*out = i;
return;
}
if (FLOAT_POSITIVE_2_TO_THE_127<= d) {
i.high = 0x7fffffffffffffffLL;
i.low = 0xffffffffffffffffULL;
*out = i;
return;
}
Float64 t = floor(d / FLOAT_POSITIVE_2_TO_THE_64);
i.high = (int64_t)t;
i.low = (uint64_t)(d - t * FLOAT_POSITIVE_2_TO_THE_64);
*out = i;
}
struct __CFNumber {
CFRuntimeBase _base;
#if OLD_CRAP_TOO
struct __CFNumber_old *__old__;
void * __dummy__;
#endif
uint64_t _pad; // need this space here for the constant objects
/* 0 or 8 more bytes allocated here */
};
/* Seven bits in base:
Bits 6..5: unused
Bits 4..0: CFNumber type
*/
static struct __CFNumber __kCFNumberNaN = {
INIT_CFRUNTIME_BASE(), 0ULL
};
const CFNumberRef kCFNumberNaN = &__kCFNumberNaN;
static struct __CFNumber __kCFNumberNegativeInfinity = {
INIT_CFRUNTIME_BASE(), 0ULL
};
const CFNumberRef kCFNumberNegativeInfinity = &__kCFNumberNegativeInfinity;
static struct __CFNumber __kCFNumberPositiveInfinity = {
INIT_CFRUNTIME_BASE(), 0ULL
};
const CFNumberRef kCFNumberPositiveInfinity = &__kCFNumberPositiveInfinity;
static const struct {
uint16_t canonicalType:5; // canonical fixed-width type
uint16_t floatBit:1; // is float
uint16_t storageBit:1; // storage size (0: (float ? 4 : 8), 1: (float ? 8 : 16) bits)
uint16_t lgByteSize:3; // base-2 log byte size of public type
uint16_t unused:6;
} __CFNumberTypeTable[] = {
/* 0 */ {0, 0, 0, 0},
/* kCFNumberSInt8Type */ {kCFNumberSInt8Type, 0, 0, 0, 0},
/* kCFNumberSInt16Type */ {kCFNumberSInt16Type, 0, 0, 1, 0},
/* kCFNumberSInt32Type */ {kCFNumberSInt32Type, 0, 0, 2, 0},
/* kCFNumberSInt64Type */ {kCFNumberSInt64Type, 0, 0, 3, 0},
/* kCFNumberFloat32Type */ {kCFNumberFloat32Type, 1, 0, 2, 0},
/* kCFNumberFloat64Type */ {kCFNumberFloat64Type, 1, 1, 3, 0},
/* kCFNumberCharType */ {kCFNumberSInt8Type, 0, 0, 0, 0},
/* kCFNumberShortType */ {kCFNumberSInt16Type, 0, 0, 1, 0},
/* kCFNumberIntType */ {kCFNumberSInt32Type, 0, 0, 2, 0},
#if __LP64__
/* kCFNumberLongType */ {kCFNumberSInt64Type, 0, 0, 3, 0},
#else
/* kCFNumberLongType */ {kCFNumberSInt32Type, 0, 0, 2, 0},
#endif
/* kCFNumberLongLongType */ {kCFNumberSInt64Type, 0, 0, 3, 0},
/* kCFNumberFloatType */ {kCFNumberFloat32Type, 1, 0, 2, 0},
/* kCFNumberDoubleType */ {kCFNumberFloat64Type, 1, 1, 3, 0},
#if __LP64__
/* kCFNumberCFIndexType */ {kCFNumberSInt64Type, 0, 0, 3, 0},
/* kCFNumberNSIntegerType */ {kCFNumberSInt64Type, 0, 0, 3, 0},
/* kCFNumberCGFloatType */ {kCFNumberFloat64Type, 1, 1, 3, 0},
#else
/* kCFNumberCFIndexType */ {kCFNumberSInt32Type, 0, 0, 2, 0},
/* kCFNumberNSIntegerType */ {kCFNumberSInt32Type, 0, 0, 2, 0},
/* kCFNumberCGFloatType */ {kCFNumberFloat32Type, 1, 0, 2, 0},
#endif
/* kCFNumberSInt128Type */ {kCFNumberSInt128Type, 0, 1, 4, 0},
};
#define CF_IS_TAGGED_INT(OBJ) (CF_TAGGED_OBJ_TYPE(OBJ) == kCFTaggedObjectID_Integer)
CF_INLINE CFNumberType __CFNumberGetType(CFNumberRef num) {
if (CF_IS_TAGGED_INT(num)) {
uintptr_t type_bits = ((uintptr_t)num >> 6) & 0x3; // top 2 bits of low byte
const CFNumberType canonical_types[4] = {kCFNumberSInt8Type, kCFNumberSInt16Type, kCFNumberSInt32Type, kCFNumberSInt64Type};
return canonical_types[type_bits];
}
return __CFBitfieldGetValue(num->_base._cfinfo[CF_INFO_BITS], 4, 0);
}
#define CVT(SRC_TYPE, DST_TYPE, DST_MIN, DST_MAX) do { \
SRC_TYPE sv; memmove(&sv, data, sizeof(SRC_TYPE)); \
DST_TYPE dv = (sv < DST_MIN) ? (DST_TYPE)DST_MIN : (DST_TYPE)(((DST_MAX < sv) ? DST_MAX : sv)); \
memmove(valuePtr, &dv, sizeof(DST_TYPE)); \
SRC_TYPE vv = (SRC_TYPE)dv; return (vv == sv); \
} while (0)
#define CVT128ToInt(SRC_TYPE, DST_TYPE, DST_MIN, DST_MAX) do { \
SRC_TYPE sv; memmove(&sv, data, sizeof(SRC_TYPE)); \
DST_TYPE dv; Boolean noLoss = false; \
if (0 < sv.high || (0 == sv.high && (int64_t)DST_MAX < sv.low)) { \
dv = DST_MAX; \
} else if (sv.high < -1 || (-1 == sv.high && sv.low < (int64_t)DST_MIN)) { \
dv = DST_MIN; \
} else { \
dv = (DST_TYPE)sv.low; \
noLoss = true; \
} \
memmove(valuePtr, &dv, sizeof(DST_TYPE)); \
return noLoss; \
} while (0)
// returns false if the output value is not the same as the number's value, which
// can occur due to accuracy loss and the value not being within the target range
static Boolean __CFNumberGetValue(CFNumberRef number, CFNumberType type, void *valuePtr) {
type = __CFNumberTypeTable[type].canonicalType;
CFNumberType ntype = __CFNumberGetType(number);
const void *data = &(number->_pad);
intptr_t taggedInteger;
if (CF_IS_TAGGED_INT(number)) {
taggedInteger = (intptr_t)number;
taggedInteger = taggedInteger >> 8;
data = &taggedInteger;
}
switch (type) {
case kCFNumberSInt8Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(Float32, int8_t, INT8_MIN, INT8_MAX);
} else {
CVT(Float64, int8_t, INT8_MIN, INT8_MAX);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(int64_t, int8_t, INT8_MIN, INT8_MAX);
} else {
CVT128ToInt(CFSInt128Struct, int8_t, INT8_MIN, INT8_MAX);
}
}
return true;
case kCFNumberSInt16Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(Float32, int16_t, INT16_MIN, INT16_MAX);
} else {
CVT(Float64, int16_t, INT16_MIN, INT16_MAX);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(int64_t, int16_t, INT16_MIN, INT16_MAX);
} else {
CVT128ToInt(CFSInt128Struct, int16_t, INT16_MIN, INT16_MAX);
}
}
return true;
case kCFNumberSInt32Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(Float32, int32_t, INT32_MIN, INT32_MAX);
} else {
CVT(Float64, int32_t, INT32_MIN, INT32_MAX);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(int64_t, int32_t, INT32_MIN, INT32_MAX);
} else {
CVT128ToInt(CFSInt128Struct, int32_t, INT32_MIN, INT32_MAX);
}
}
return true;
case kCFNumberSInt64Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(Float32, int64_t, INT64_MIN, INT64_MAX);
} else {
CVT(Float64, int64_t, INT64_MIN, INT64_MAX);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
memmove(valuePtr, data, 8);
} else {
CVT128ToInt(CFSInt128Struct, int64_t, INT64_MIN, INT64_MAX);
}
}
return true;
case kCFNumberSInt128Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
Float32 f;
memmove(&f, data, 4);
Float64 d = f;
CFSInt128Struct i;
cvtFloat64ToSInt128(&i, &d);
memmove(valuePtr, &i, 16);
Float64 d2;
cvtSInt128ToFloat64(&d2, &i);
Float32 f2 = (Float32)d2;
return (f2 == f);
} else {
Float64 d;
memmove(&d, data, 8);
CFSInt128Struct i;
cvtFloat64ToSInt128(&i, &d);
memmove(valuePtr, &i, 16);
Float64 d2;
cvtSInt128ToFloat64(&d2, &i);
return (d2 == d);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
int64_t j;
memmove(&j, data, 8);
CFSInt128Struct i;
i.low = j;
i.high = (j < 0) ? -1LL : 0LL;
memmove(valuePtr, &i, 16);
} else {
memmove(valuePtr, data, 16);
}
}
return true;
case kCFNumberFloat32Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
memmove(valuePtr, data, 4);
} else {
double d;
memmove(&d, data, 8);
if (isnan(d)) {
uint32_t l = 0x7fc00000;
memmove(valuePtr, &l, 4);
return true;
} else if (isinf(d)) {
uint32_t l = 0x7f800000;
if (d < 0.0) l += 0x80000000UL;
memmove(valuePtr, &l, 4);
return true;
}
CVT(Float64, Float32, -FLT_MAX, FLT_MAX);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(int64_t, Float32, -FLT_MAX, FLT_MAX);
} else {
CFSInt128Struct i;
memmove(&i, data, 16);
Float64 d;
cvtSInt128ToFloat64(&d, &i);
Float32 f = (Float32)d;
memmove(valuePtr, &f, 4);
d = f;
CFSInt128Struct i2;
cvtFloat64ToSInt128(&i2, &d);
return cmp128(&i2, &i) == kCFCompareEqualTo;
}
}
return true;
case kCFNumberFloat64Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
float f;
memmove(&f, data, 4);
if (isnan(f)) {
uint64_t l = BITSFORDOUBLENAN;
memmove(valuePtr, &l, 8);
return true;
} else if (isinf(f)) {
uint64_t l = BITSFORDOUBLEPOSINF;
if (f < 0.0) l += 0x8000000000000000ULL;
memmove(valuePtr, &l, 8);
return true;
}
CVT(Float32, Float64, -DBL_MAX, DBL_MAX);
} else {
memmove(valuePtr, data, 8);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT(int64_t, Float64, -DBL_MAX, DBL_MAX);
} else {
CFSInt128Struct i;
memmove(&i, data, 16);
Float64 d;
cvtSInt128ToFloat64(&d, &i);
memmove(valuePtr, &d, 8);
CFSInt128Struct i2;
cvtFloat64ToSInt128(&i2, &d);
return cmp128(&i2, &i) == kCFCompareEqualTo;
}
}
return true;
}
return false;
}
#define CVT_COMPAT(SRC_TYPE, DST_TYPE, FT) do { \
SRC_TYPE sv; memmove(&sv, data, sizeof(SRC_TYPE)); \
DST_TYPE dv = (DST_TYPE)(sv); \
memmove(valuePtr, &dv, sizeof(DST_TYPE)); \
SRC_TYPE vv = (SRC_TYPE)dv; return (FT) || (vv == sv); \
} while (0)
#define CVT128ToInt_COMPAT(SRC_TYPE, DST_TYPE) do { \
SRC_TYPE sv; memmove(&sv, data, sizeof(SRC_TYPE)); \
DST_TYPE dv; dv = (DST_TYPE)sv.low; \
memmove(valuePtr, &dv, sizeof(DST_TYPE)); \
uint64_t vv = (uint64_t)dv; return (vv == sv.low); \
} while (0)
// this has the old cast-style behavior
static Boolean __CFNumberGetValueCompat(CFNumberRef number, CFNumberType type, void *valuePtr) {
type = __CFNumberTypeTable[type].canonicalType;
CFNumberType ntype = __CFNumberGetType(number);
const void *data = &(number->_pad);
intptr_t taggedInteger;
if (CF_IS_TAGGED_INT(number)) {
taggedInteger = (intptr_t)number;
taggedInteger = taggedInteger >> 8;
data = &taggedInteger;
}
switch (type) {
case kCFNumberSInt8Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(Float32, int8_t, 0);
} else {
CVT_COMPAT(Float64, int8_t, 0);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
// Leopard's implemenation of this always returned true. We should only return true when the conversion is lossless. However, there are some clients who use CFNumber with small unsigned values disguised as signed values. Since there is no CFNumber API yet for unsigned values, we need to accomodate those clients for now. <rdar://problem/6471866>
// This accomodation should be removed if CFNumber ever provides API for unsigned values. <rdar://problem/6473890>
int64_t sv; memmove(&sv, data, sizeof(int64_t));
int8_t dv = (int8_t)(sv);
memmove(valuePtr, &dv, sizeof(int8_t));
int64_t vv = (int64_t)dv; return !_CFExecutableLinkedOnOrAfter(CFSystemVersionSnowLeopard) || ((sv >> 8LL) == 0LL) || (vv == sv);
} else {
CVT128ToInt_COMPAT(CFSInt128Struct, int8_t);
}
}
return true;
case kCFNumberSInt16Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(Float32, int16_t, 0);
} else {
CVT_COMPAT(Float64, int16_t, 0);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
// Leopard's implemenation of this always returned true. We should only return true when the conversion is lossless. However, there are some clients who use CFNumber with small unsigned values disguised as signed values. Since there is no CFNumber API yet for unsigned values, we need to accomodate those clients for now. <rdar://problem/6471866>
// This accomodation should be removed if CFNumber ever provides API for unsigned values. <rdar://problem/6473890>
int64_t sv; memmove(&sv, data, sizeof(int64_t));
int16_t dv = (int16_t)(sv);
memmove(valuePtr, &dv, sizeof(int16_t));
int64_t vv = (int64_t)dv; return !_CFExecutableLinkedOnOrAfter(CFSystemVersionSnowLeopard) || ((sv >> 16LL) == 0LL) || (vv == sv);
} else {
CVT128ToInt_COMPAT(CFSInt128Struct, int16_t);
}
}
return true;
case kCFNumberSInt32Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(Float32, int32_t, 0);
} else {
CVT_COMPAT(Float64, int32_t, 0);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(int64_t, int32_t, 0);
} else {
CVT128ToInt_COMPAT(CFSInt128Struct, int32_t);
}
}
return true;
case kCFNumberSInt64Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(Float32, int64_t, 0);
} else {
CVT_COMPAT(Float64, int64_t, 0);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(int64_t, int64_t, 0);
} else {
CVT128ToInt_COMPAT(CFSInt128Struct, int64_t);
}
}
return true;
case kCFNumberSInt128Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
Float32 f;
memmove(&f, data, 4);
Float64 d = f;
CFSInt128Struct i;
cvtFloat64ToSInt128(&i, &d);
memmove(valuePtr, &i, 16);
Float64 d2;
cvtSInt128ToFloat64(&d2, &i);
Float32 f2 = (Float32)d2;
return (f2 == f);
} else {
Float64 d;
memmove(&d, data, 8);
CFSInt128Struct i;
cvtFloat64ToSInt128(&i, &d);
memmove(valuePtr, &i, 16);
Float64 d2;
cvtSInt128ToFloat64(&d2, &i);
return (d2 == d);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
int64_t j;
memmove(&j, data, 8);
CFSInt128Struct i;
i.low = j;
i.high = (j < 0) ? -1LL : 0LL;
memmove(valuePtr, &i, 16);
} else {
memmove(valuePtr, data, 16);
}
}
return true;
case kCFNumberFloat32Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
memmove(valuePtr, data, 4);
} else {
CVT_COMPAT(Float64, Float32, 0);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(int64_t, Float32, 0);
} else {
CFSInt128Struct i;
memmove(&i, data, 16);
Float64 d;
cvtSInt128ToFloat64(&d, &i);
Float32 f = (Float32)d;
memmove(valuePtr, &f, 4);
d = f;
CFSInt128Struct i2;
cvtFloat64ToSInt128(&i2, &d);
return cmp128(&i2, &i) == kCFCompareEqualTo;
}
}
return true;
case kCFNumberFloat64Type:
if (__CFNumberTypeTable[ntype].floatBit) {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(Float32, Float64, 0);
} else {
memmove(valuePtr, data, 8);
}
} else {
if (0 == __CFNumberTypeTable[ntype].storageBit) {
CVT_COMPAT(int64_t, Float64, 0);
} else {
CFSInt128Struct i;
memmove(&i, data, 16);
Float64 d;
cvtSInt128ToFloat64(&d, &i);
memmove(valuePtr, &d, 8);
CFSInt128Struct i2;
cvtFloat64ToSInt128(&i2, &d);
return cmp128(&i2, &i) == kCFCompareEqualTo;
}
}
return true;
}
return false;
}
#if OLD_CRAP_TOO
static void FAIL(void) {}
#endif
static CFStringRef __CFNumberCopyDescription(CFTypeRef cf) {
CFNumberRef number = (CFNumberRef)cf;
CFNumberType type = __CFNumberGetType(number);
CFMutableStringRef mstr = CFStringCreateMutable(kCFAllocatorSystemDefault, 0);
CFStringAppendFormat(mstr, NULL, CFSTR("<CFNumber %p [%p]>{value = "), cf, CFGetAllocator(cf));
if (__CFNumberTypeTable[type].floatBit) {
Float64 d;
__CFNumberGetValue(number, kCFNumberFloat64Type, &d);
if (isnan(d)) {
CFStringAppend(mstr, CFSTR("nan"));
} else if (isinf(d)) {
CFStringAppend(mstr, (0.0 < d) ? CFSTR("+infinity") : CFSTR("-infinity"));
} else if (0.0 == d) {
CFStringAppend(mstr, (copysign(1.0, d) < 0.0) ? CFSTR("-0.0") : CFSTR("+0.0"));
} else {
CFStringAppendFormat(mstr, NULL, CFSTR("%+.*f"), (__CFNumberTypeTable[type].storageBit ? 20 : 10), d);
}
const char *typeName = "unknown float";
switch (type) {
case kCFNumberFloat32Type: typeName = "kCFNumberFloat32Type"; break;
case kCFNumberFloat64Type: typeName = "kCFNumberFloat64Type"; break;
}
CFStringAppendFormat(mstr, NULL, CFSTR(", type = %s}"), typeName);
} else {
CFSInt128Struct i;
__CFNumberGetValue(number, kCFNumberSInt128Type, &i);
char buffer[128];
emit128(buffer, &i, true);
const char *typeName = "unknown integer";
switch (type) {
case kCFNumberSInt8Type: typeName = "kCFNumberSInt8Type"; break;
case kCFNumberSInt16Type: typeName = "kCFNumberSInt16Type"; break;
case kCFNumberSInt32Type: typeName = "kCFNumberSInt32Type"; break;
case kCFNumberSInt64Type: typeName = "kCFNumberSInt64Type"; break;
case kCFNumberSInt128Type: typeName = "kCFNumberSInt128Type"; break;
}
CFStringAppendFormat(mstr, NULL, CFSTR("%s, type = %s}"), buffer, typeName);
}
#if OLD_CRAP_TOO
if (! number->__old__) {
printf("*** Test skipped in __CFNumberCopyDescription for number %p\n", cf);
} else {
CFStringRef test = __CFNumberCopyDescription_old(number->__old__);
if (!CFEqual(test, mstr)) {
CFLog(kCFLogLevelWarning, CFSTR("*** TEST FAIL in __CFNumberCopyDescription: '%@' '%@'"), test, mstr); FAIL();
}
}
#endif
return mstr;
}
// This function separated out from __CFNumberCopyFormattingDescription() so the plist creation can use it as well.
static CFStringRef __CFNumberCreateFormattingDescriptionAsFloat64(CFAllocatorRef allocator, CFTypeRef cf) {
Float64 d;
CFNumberGetValue((CFNumberRef)cf, kCFNumberFloat64Type, &d);
if (isnan(d)) {
return (CFStringRef)CFRetain(CFSTR("nan"));
}
if (isinf(d)) {
return (CFStringRef)CFRetain((0.0 < d) ? CFSTR("+infinity") : CFSTR("-infinity"));
}
if (0.0 == d) {
return (CFStringRef)CFRetain(CFSTR("0.0"));
}
// if %g is used here, need to use DBL_DIG + 2 on Mac OS X, but %f needs +1
return CFStringCreateWithFormat(allocator, NULL, CFSTR("%.*g"), DBL_DIG + 2, d);
}
__private_extern__ CFStringRef __CFNumberCopyFormattingDescriptionAsFloat64(CFTypeRef cf) {
CFStringRef result = __CFNumberCreateFormattingDescriptionAsFloat64(kCFAllocatorSystemDefault, cf);
#if OLD_CRAP_TOO
CFNumberRef number = (CFNumberRef)cf;
if (! number->__old__) {
printf("*** Test skipped in __CFNumberCopyFormattingDescriptionAsFloat64 for number %p\n", cf);
} else {
CFStringRef test = __CFNumberCopyFormattingDescriptionAsFloat64_old(number->__old__);
if (!CFEqual(test, result)) {
CFLog(kCFLogLevelWarning, CFSTR("*** TEST FAIL in __CFNumberCopyFormattingDescriptionAsFloat64: '%@' '%@'"), test, result); FAIL();
}
}
#endif
return result;
}
__private_extern__ CFStringRef __CFNumberCreateFormattingDescription(CFAllocatorRef allocator, CFTypeRef cf, CFDictionaryRef formatOptions) {
CFNumberRef number = (CFNumberRef)cf;
CFNumberType type = __CFNumberGetType(number);
if (__CFNumberTypeTable[type].floatBit) {
return __CFNumberCreateFormattingDescriptionAsFloat64(allocator, number);
}
CFSInt128Struct i;
__CFNumberGetValue(number, kCFNumberSInt128Type, &i);
char buffer[128];
emit128(buffer, &i, false);
return CFStringCreateWithFormat(allocator, NULL, CFSTR("%s"), buffer);
}
static CFStringRef __CFNumberCopyFormattingDescription_new(CFTypeRef cf, CFDictionaryRef formatOptions) {
CFNumberRef number = (CFNumberRef)cf;
CFNumberType type = __CFNumberGetType(number);
if (__CFNumberTypeTable[type].floatBit) {
return __CFNumberCopyFormattingDescriptionAsFloat64(number);
}
CFSInt128Struct i;
__CFNumberGetValue(number, kCFNumberSInt128Type, &i);
char buffer[128];
emit128(buffer, &i, false);
return CFStringCreateWithFormat(kCFAllocatorSystemDefault, NULL, CFSTR("%s"), buffer);
}
__private_extern__ CFStringRef __CFNumberCopyFormattingDescription(CFTypeRef cf, CFDictionaryRef formatOptions) {
CFStringRef result = __CFNumberCopyFormattingDescription_new(cf, formatOptions);
#if OLD_CRAP_TOO
CFNumberRef number = (CFNumberRef)cf;
if (! number->__old__) {
printf("*** Test skipped in __CFNumberCopyFormattingDescription for number %p\n", cf);
} else {
CFStringRef test = __CFNumberCopyFormattingDescription_old(number->__old__, formatOptions);
if (!CFEqual(test, result)) {
CFLog(kCFLogLevelWarning, CFSTR("*** TEST FAIL in __CFNumberCopyFormattingDescription: '%@' '%@'"), test, result); FAIL();
}
}
#endif
return result;
}
static Boolean __CFNumberEqual(CFTypeRef cf1, CFTypeRef cf2) {
Boolean b = CFNumberCompare((CFNumberRef)cf1, (CFNumberRef)cf2, 0) == kCFCompareEqualTo;
#if OLD_CRAP_TOO
CFNumberRef number1 = (CFNumberRef)cf1;
CFNumberRef number2 = (CFNumberRef)cf2;
if (! number1->__old__ || !number2->__old__) {
printf("*** Test skipped in __CFNumberEqual for numbers %p %p\n", cf1, cf2);
} else {
Boolean b2 = __CFNumberEqual_old(number1->__old__, number2->__old__);
if (b2 != b) {
CFLog(kCFLogLevelWarning, CFSTR("*** TEST FAIL in __CFNumberEqual: '%d' '%d'"), b2, b); FAIL();
}
}
#endif
return b;
}
static CFHashCode __CFNumberHash(CFTypeRef cf) {
CFHashCode h;
CFNumberRef number = (CFNumberRef)cf;
switch (__CFNumberGetType(number)) {
case kCFNumberSInt8Type:
case kCFNumberSInt16Type:
case kCFNumberSInt32Type: {
SInt32 i;
__CFNumberGetValue(number, kCFNumberSInt32Type, &i);
h = _CFHashInt(i);
break;
}
default: {