#ifndef Py_LIMITED_API #ifndef Py_LONGINTREPR_H #define Py_LONGINTREPR_H #ifdef __cplusplus extern "C" { #endif /* This is published for the benefit of "friends" marshal.c and _decimal.c. */ /* Parameters of the integer representation. There are two different sets of parameters: one set for 30-bit digits, stored in an unsigned 32-bit integer type, and one set for 15-bit digits with each digit stored in an unsigned short. The value of PYLONG_BITS_IN_DIGIT, defined either at configure time or in pyport.h, is used to decide which digit size to use. Type 'digit' should be able to hold 2*PyLong_BASE-1, and type 'twodigits' should be an unsigned integer type able to hold all integers up to PyLong_BASE*PyLong_BASE-1. x_sub assumes that 'digit' is an unsigned type, and that overflow is handled by taking the result modulo 2**N for some N > PyLong_SHIFT. The majority of the code doesn't care about the precise value of PyLong_SHIFT, but there are some notable exceptions: - long_pow() requires that PyLong_SHIFT be divisible by 5 - PyLong_{As,From}ByteArray require that PyLong_SHIFT be at least 8 - long_hash() requires that PyLong_SHIFT is *strictly* less than the number of bits in an unsigned long, as do the PyLong <-> long (or unsigned long) conversion functions - the Python int <-> size_t/Py_ssize_t conversion functions expect that PyLong_SHIFT is strictly less than the number of bits in a size_t - the marshal code currently expects that PyLong_SHIFT is a multiple of 15 - NSMALLNEGINTS and NSMALLPOSINTS should be small enough to fit in a single digit; with the current values this forces PyLong_SHIFT >= 9 The values 15 and 30 should fit all of the above requirements, on any platform. */ #if PYLONG_BITS_IN_DIGIT == 30 typedef uint32_t digit; typedef int32_t sdigit; /* signed variant of digit */ typedef uint64_t twodigits; typedef int64_t stwodigits; /* signed variant of twodigits */ #define PyLong_SHIFT 30 #define _PyLong_DECIMAL_SHIFT 9 /* max(e such that 10**e fits in a digit) */ #define _PyLong_DECIMAL_BASE ((digit)1000000000) /* 10 ** DECIMAL_SHIFT */ #elif PYLONG_BITS_IN_DIGIT == 15 typedef unsigned short digit; typedef short sdigit; /* signed variant of digit */ typedef unsigned long twodigits; typedef long stwodigits; /* signed variant of twodigits */ #define PyLong_SHIFT 15 #define _PyLong_DECIMAL_SHIFT 4 /* max(e such that 10**e fits in a digit) */ #define _PyLong_DECIMAL_BASE ((digit)10000) /* 10 ** DECIMAL_SHIFT */ #else #error "PYLONG_BITS_IN_DIGIT should be 15 or 30" #endif #define PyLong_BASE ((digit)1 << PyLong_SHIFT) #define PyLong_MASK ((digit)(PyLong_BASE - 1)) #if PyLong_SHIFT % 5 != 0 #error "longobject.c requires that PyLong_SHIFT be divisible by 5" #endif /* Long integer representation. The absolute value of a number is equal to SUM(for i=0 through abs(ob_size)-1) ob_digit[i] * 2**(SHIFT*i) Negative numbers are represented with ob_size < 0; zero is represented by ob_size == 0. In a normalized number, ob_digit[abs(ob_size)-1] (the most significant digit) is never zero. Also, in all cases, for all valid i, 0 <= ob_digit[i] <= MASK. The allocation function takes care of allocating extra memory so that ob_digit[0] ... ob_digit[abs(ob_size)-1] are actually available. CAUTION: Generic code manipulating subtypes of PyVarObject has to aware that ints abuse ob_size's sign bit. */ struct _longobject { PyObject_VAR_HEAD digit ob_digit[1]; }; PyAPI_FUNC(PyLongObject *) _PyLong_New(Py_ssize_t); /* Return a copy of src. */ PyAPI_FUNC(PyObject *) _PyLong_Copy(PyLongObject *src); #ifdef __cplusplus } #endif #endif /* !Py_LONGINTREPR_H */ #endif /* Py_LIMITED_API */
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cpython | Folder | 0755 |
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internal | Folder | 0755 |
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Python.h | File | 3.15 KB | 0644 |
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abstract.h | File | 30.67 KB | 0644 |
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bltinmodule.h | File | 264 B | 0644 |
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boolobject.h | File | 1.2 KB | 0644 |
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bytearrayobject.h | File | 1.45 KB | 0644 |
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bytesobject.h | File | 2.53 KB | 0644 |
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cellobject.h | File | 720 B | 0644 |
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ceval.h | File | 5.57 KB | 0644 |
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classobject.h | File | 1.62 KB | 0644 |
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code.h | File | 318 B | 0644 |
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codecs.h | File | 6.91 KB | 0644 |
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compile.h | File | 520 B | 0644 |
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complexobject.h | File | 1.76 KB | 0644 |
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context.h | File | 1.92 KB | 0644 |
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datetime.h | File | 9.41 KB | 0644 |
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descrobject.h | File | 2.93 KB | 0644 |
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dictobject.h | File | 3.76 KB | 0644 |
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dynamic_annotations.h | File | 21.94 KB | 0644 |
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enumobject.h | File | 253 B | 0644 |
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errcode.h | File | 1.66 KB | 0644 |
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eval.h | File | 831 B | 0644 |
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exports.h | File | 1.07 KB | 0644 |
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fileobject.h | File | 1.53 KB | 0644 |
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fileutils.h | File | 508 B | 0644 |
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floatobject.h | File | 4.26 KB | 0644 |
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frameobject.h | File | 337 B | 0644 |
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funcobject.h | File | 4.16 KB | 0644 |
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genericaliasobject.h | File | 334 B | 0644 |
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genobject.h | File | 3.27 KB | 0644 |
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import.h | File | 2.96 KB | 0644 |
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interpreteridobject.h | File | 334 B | 0644 |
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intrcheck.h | File | 772 B | 0644 |
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iterobject.h | File | 593 B | 0644 |
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listobject.h | File | 1.74 KB | 0644 |
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longintrepr.h | File | 3.71 KB | 0644 |
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longobject.h | File | 8.4 KB | 0644 |
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marshal.h | File | 803 B | 0644 |
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memoryobject.h | File | 2.7 KB | 0644 |
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methodobject.h | File | 4.05 KB | 0644 |
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modsupport.h | File | 10.09 KB | 0644 |
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moduleobject.h | File | 2.4 KB | 0644 |
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namespaceobject.h | File | 349 B | 0644 |
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object.h | File | 27.68 KB | 0644 |
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objimpl.h | File | 8.25 KB | 0644 |
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opcode.h | File | 5.38 KB | 0644 |
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osdefs.h | File | 737 B | 0644 |
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osmodule.h | File | 291 B | 0644 |
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patchlevel.h | File | 1.27 KB | 0644 |
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py_curses.h | File | 2.42 KB | 0644 |
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pycapsule.h | File | 1.68 KB | 0644 |
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pyconfig-64.h | File | 47.55 KB | 0644 |
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pyconfig.h | File | 162 B | 0644 |
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pydtrace.h | File | 2.36 KB | 0644 |
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pyerrors.h | File | 12.13 KB | 0644 |
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pyexpat.h | File | 2.51 KB | 0644 |
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pyframe.h | File | 466 B | 0644 |
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pyhash.h | File | 4.12 KB | 0644 |
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pylifecycle.h | File | 2.03 KB | 0644 |
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pymacconfig.h | File | 2.92 KB | 0644 |
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pymacro.h | File | 4.8 KB | 0644 |
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pymath.h | File | 8.12 KB | 0644 |
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pymem.h | File | 3.8 KB | 0644 |
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pyport.h | File | 30.94 KB | 0644 |
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pystate.h | File | 5.13 KB | 0644 |
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pystrcmp.h | File | 436 B | 0644 |
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pystrhex.h | File | 849 B | 0644 |
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pystrtod.h | File | 1.45 KB | 0644 |
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pythonrun.h | File | 1.08 KB | 0644 |
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pythread.h | File | 5.8 KB | 0644 |
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rangeobject.h | File | 628 B | 0644 |
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setobject.h | File | 3.3 KB | 0644 |
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sliceobject.h | File | 2.46 KB | 0644 |
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structmember.h | File | 2.03 KB | 0644 |
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structseq.h | File | 1.36 KB | 0644 |
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sysmodule.h | File | 1.21 KB | 0644 |
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token.h | File | 2.61 KB | 0644 |
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traceback.h | File | 584 B | 0644 |
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tracemalloc.h | File | 1.09 KB | 0644 |
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tupleobject.h | File | 1.58 KB | 0644 |
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typeslots.h | File | 2.4 KB | 0644 |
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unicodeobject.h | File | 35.3 KB | 0644 |
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warnings.h | File | 1.73 KB | 0644 |
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weakrefobject.h | File | 2.8 KB | 0644 |
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