From 4a52a71956a8d46fcb7294ac71734504bb09bcc2 Mon Sep 17 00:00:00 2001
From: S. Solomon Darnell
Date: Fri, 28 Mar 2025 21:52:21 -0500
Subject: two version of R2R are here

---
 .../lib/python3.12/site-packages/fixedint/base.py  | 468 +++++++++++++++++++++
 1 file changed, 468 insertions(+)
 create mode 100644 .venv/lib/python3.12/site-packages/fixedint/base.py

(limited to '.venv/lib/python3.12/site-packages/fixedint/base.py')

diff --git a/.venv/lib/python3.12/site-packages/fixedint/base.py b/.venv/lib/python3.12/site-packages/fixedint/base.py
new file mode 100644
index 00000000..ff93d43b
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/fixedint/base.py
@@ -0,0 +1,468 @@
+# -*- coding: utf-8 -*-
+
+import sys
+from fixedint.compat import *
+from weakref import WeakValueDictionary
+
+class FixedProperty(object):
+    def __init__(self, val, doc):
+        self.val = val
+        self.__doc__ = doc
+    def __get__(self, obj, type=None):
+        return self.val
+    def __set__(self, obj, value):
+        raise AttributeError("property is read-only")
+
+class FixedMetaProperty(object):
+    def __init__(self, name, doc):
+        self.name = name
+        self.__doc__ = doc
+    def __get__(self, obj, type=None):
+        if self.name not in obj.__dict__:
+            # this should only happen when trying to access FixedInt.prop, which help() does
+            raise AttributeError("Attribute %s not defined on base class" % self.name)
+        prop = obj.__dict__[self.name]
+        return prop.__get__(obj)
+    def __set__(self, obj, value):
+        raise AttributeError("property %s is read-only" % self.name)
+
+if not PY3K:
+    # While it'd be nice to put machine-sized integers into Python 2.x "int"s,
+    # it turns out that the int methods occasionally freak out when given longs.
+    # So, we use arbitrary-precision ints for all Pythons.
+    int = long
+
+_class_cache = WeakValueDictionary()
+
+_doc_width = "Bit width of this integer, including the sign bit."
+_doc_signed = "True if this integer is a twos-complement signed type."
+_doc_mutable = "True if this integer is mutable (modifiable in-place)."
+_doc_minval = "Minimum representable value of this integer type"
+_doc_maxval = "Maximum representable value of this integer type"
+
+_subclass_token = object()
+class _FixedIntBaseMeta(type):
+    def __new__(cls, name, bases, dict):
+        if dict.get('_subclass_enable', None) == _subclass_token:
+            del dict['_subclass_enable']
+            return type.__new__(cls, name, bases, dict)
+
+        for base in bases:
+            if issubclass(base, FixedInt):
+                basename = base.__name__
+                raise Exception("Cannot subclass %s; use the %s constructor to produce new subclasses." % (basename, basename))
+        raise Exception("Cannot subclass this class.")
+
+    def __call__(self, width, signed=True, mutable=None):
+        signed = bool(signed)
+        if mutable is None:
+            # Take mutable from constructor used (FixedInt or MutableFixedInt)
+            mutable = (self == MutableFixedInt)
+
+        cachekey = (width, signed, mutable)
+        try:
+            return _class_cache[cachekey]
+        except KeyError:
+            pass
+            
+        if signed:
+            min = -1<<(width-1)
+            max = (1<<(width-1))-1
+        else:
+            min = 0
+            max = (1<<width)-1
+
+        if mutable:
+            bases = (MutableFixedInt,)
+        else:
+            bases = (FixedInt, int)
+
+        dict = {}
+        dict['width'] = FixedProperty(width, doc=_doc_width)
+        dict['signed'] = FixedProperty(signed, doc=_doc_signed)
+        dict['mutable'] = FixedProperty(mutable, doc=_doc_mutable)
+        dict['minval'] = FixedProperty(min, doc=_doc_minval)
+        dict['maxval'] = FixedProperty(max, doc=_doc_maxval)
+
+        if signed:
+            _mask1 = (1<<(width-1)) - 1
+            _mask2 = 1<<(width-1)
+            def _rectify(val):
+                return (val & _mask1) - (val & _mask2)
+        else:
+            _mask = (1<<width) - 1
+            def _rectify(val):
+                return val & _mask
+        dict['_rectify'] = staticmethod(_rectify)
+
+        if not mutable:
+            intbase = bases[1]
+            def _newfunc(cls, val=0):
+                ''' Convert an integer into a fixed-width integer. '''
+                return intbase.__new__(cls, _rectify(int(val)))
+            _newfunc.__name__ = '__new__'
+            dict['__new__'] = _newfunc
+
+        name = ''.join(['Mutable'*mutable, 'U'*(not signed), 'Int', str(width)])
+
+        cls = _FixedIntMeta(name, bases, dict)
+        _class_cache[cachekey] = cls
+        return cls
+
+    width = FixedMetaProperty('width', doc=_doc_width)
+    signed = FixedMetaProperty('signed', doc=_doc_signed)
+    mutable = FixedMetaProperty('mutable', doc=_doc_mutable)
+    minval = FixedMetaProperty('minval', doc=_doc_minval)
+    maxval = FixedMetaProperty('maxval', doc=_doc_maxval)
+
+class _FixedIntMeta(_FixedIntBaseMeta):
+    __new__ = type.__new__
+    __call__ = type.__call__
+
+
+def int_method(f):
+    if isinstance(f, str):
+        def wrapper(f2):
+            f2.__name__ = f
+            return int_method(f2)
+        return wrapper
+    else:
+        f.__doc__ = getattr(int, f.__name__).__doc__
+        return f
+
+class FixedInt:
+    __slots__ = ()
+    _subclass_enable = _subclass_token
+
+    # width, signed, mutable, minval, maxval defined in metaclass
+    # _rectify defined in metaclass
+    # __new__ defined in metaclass
+
+    if not PY3K:
+        @int_method
+        def __hex__(self):
+            return '%#x' % int(self)
+        def __oct__(self):
+            return '%#o' % int(self)
+
+    @int_method
+    def __pow__(self, other, modulo=None):
+        # Jython can't handle int.__pow__(x, y, None)
+        if modulo is None:
+            return type(self)(int.__pow__(int(self), int(other)))
+        return type(self)(int.__pow__(int(self), int(other), modulo))
+
+    @int_method
+    def __rpow__(self, other):
+        return type(other)(int.__rpow__(int(self), int(other)))
+
+    @int_method
+    def __repr__(self):
+        return '%s(%s)' % (type(self).__name__, self)
+
+    @int_method
+    def __str__(self):
+        return str(int(self))
+
+    @classmethod
+    def _canonicalize_index(cls, idx):
+        if idx < 0:
+            idx += cls.width
+        return idx
+
+    @classmethod
+    def _canonicalize_slice(cls, slice):
+        start = slice.start
+        stop = slice.stop
+
+        if slice.step is not None:
+            raise ValueError("slice step unsupported")
+
+        if start is None:
+            start = 0
+        else:
+            start = cls._canonicalize_index(start)
+
+        if stop is None:
+            stop = cls.width
+        elif isinstance(stop, complex):
+            if stop.real:
+                raise ValueError("invalid slice stop: must be integer or pure-imaginary complex number")
+            stop = int(stop.imag) + start
+        else:
+            stop = cls._canonicalize_index(stop)
+
+        if 0 <= start < stop <= cls.width:
+            return (start, stop)
+        else:
+            raise IndexError("invalid slice %d:%d" % (start, stop))
+
+    def __getitem__(self, item):
+        ''' Slice the bits of an integer.
+
+        x[a] gets a single bit at position a, returning a bool.
+        x[a:b] gets a range of bits as a FixedInt.
+
+        For slice notation, b may be of the form 'bj' (a complex number) to treat it
+        as a length rather than a stop index.
+        The result will be of the type UIntX, where X is the number of bits in the range.
+
+        Examples:
+        x[0]: equal to (x & 1)
+        x[1:5] or x[1:4j]: equal to (x & 31) >> 1
+        x[:5]: equal to (x & 31)
+        '''
+
+        if isinstance(item, slice):
+            start, stop = self._canonicalize_slice(item)
+            return FixedInt(stop - start, signed=False)(int(self) >> start)
+        else:
+            item = self._canonicalize_index(item)
+            if 0 <= item < self.width:
+                return bool(int(self) & (1 << item))
+            else:
+                raise IndexError("index %d out of range" % item)
+
+    def to_bytes(self, length=None, byteorder=sys.byteorder):
+        if length is None:
+            length = (self.width + 7) // 8
+        try:
+            return int(self).to_bytes(length, byteorder=byteorder, signed=self.signed)
+        except (OverflowError, AttributeError):
+            pass
+
+        val = int(self) & ((1 << (length * 8)) - 1)
+        out = []
+        while length > 0:
+            out.append(val & 0xff)
+            val >>= 8
+            length -= 1
+        if byteorder == 'big':
+            out = reversed(out)
+        if PY3K:
+            return bytes(out)
+        else:
+            return ''.join(map(chr, out))
+
+    @classmethod
+    def from_bytes(cls, bytes, byteorder=sys.byteorder, signed=None):
+        if cls in (FixedInt, MutableFixedInt):
+            if signed is None:
+                signed = False
+        elif signed is None:
+                signed = cls.signed
+        else:
+            raise ValueError("can't set signed with a concrete FixedInt")
+
+        blen = len(bytes)
+        try:
+            val = int.from_bytes(bytes, byteorder=byteorder, signed=signed)
+        except AttributeError:
+            val = 0
+            if byteorder == 'big':
+                bytes = reversed(bytes)
+            if PY3K:
+                for i,c in enumerate(bytes):
+                    val |= c << (8 * i)
+            else:
+                for i,c in enumerate(bytes):
+                    val |= ord(c) << (8 * i)
+
+        if cls in (FixedInt, MutableFixedInt):
+            return cls(blen*8, signed=signed)(val)
+        else:
+            return cls(val)
+
+    if PY3K:
+        @int_method
+        def __round__(self, n=0):
+            return int(self)
+
+    # Inherited methods which are fine as-is:
+    # complex, int, long, float, index
+    # truediv, rtruediv, divmod, rdivmod, rlshift, rrshift
+    # format
+
+FixedInt = add_metaclass(_FixedIntBaseMeta)(FixedInt)
+
+
+class MutableFixedInt(FixedInt):
+    _subclass_enable = _subclass_token
+
+    def __init__(self, val=0, base=None):
+        ''' Convert an integer into a fixed-width integer. '''
+        if base is None:
+            val = int(val)
+        else:
+            val = int(val, base)
+
+        self._val = self._rectify(val)
+
+    if PY3K:
+        @int_method
+        def __format__(self, format_spec):
+            return format(self._val, format_spec)
+
+    def __ipow__(self, other, modulo=None):
+        if modulo is None:
+            self._val = self._rectify(int.__pow__(int(self), int(other)))
+        else:
+            self._val = self._rectify(int.__pow__(int(self), int(other), modulo))
+        return self
+
+    def __setitem__(self, item, value):
+        ''' Modify a slice of an integer.
+
+        x[a]=y sets a single bit at position a.
+        x[a:b]=y sets a range of bits from an integer.
+
+        See __getitem__ for more details on the slice notation.
+        '''
+
+        value = int(value)
+        if isinstance(item, slice):
+            start, stop = self._canonicalize_slice(item)
+            mask = (1 << (stop - start)) - 1
+            self._val = (self._val & ~(mask << start)) | ((value & mask) << start)
+        else:
+            item = self._canonicalize_index(item)
+            if 0 <= item < self.width:
+                if value:
+                    self._val |= (1 << item)
+                else:
+                    self._val &= ~(1 << item)
+                return bool(int(self) & (1 << item))
+            else:
+                raise IndexError("index %d out of range" % item)
+
+## Arithmetic methods
+def _arith_unary_factory(name, mutable):
+    ''' Factory function producing methods for unary operations. '''
+    intfunc = getattr(int, name)
+    if mutable:
+        @int_method(name)
+        def _f(self):
+            return type(self)(intfunc(self._val))
+    else:
+        @int_method(name)
+        def _f(self):
+            return type(self)(intfunc(self))
+    return _f
+
+_arith_unary = 'neg pos abs invert'.split()
+for f in _arith_unary:
+    s = '__%s__' % f
+    setattr(FixedInt, s, _arith_unary_factory(s, mutable=False))
+    setattr(MutableFixedInt, s, _arith_unary_factory(s, mutable=True))
+
+
+def _arith_convert(t1, t2):
+    if not issubclass(t2, FixedInt):
+        return t1
+
+    # Follow C conversion rules (ISO/IEC 9899:TC3 §6.3.1.8)
+    if t1.signed == t2.signed:
+        # If both are signed or both are unsigned, return the larger type.
+        if t1.width >= t2.width:
+            return t1
+        return t2
+
+    if not t1.signed:
+        ut, st = t1, t2
+    else:
+        ut, st = t2, t1
+
+    if ut.width >= st.width:
+        # If the unsigned type has rank >= the signed type, convert the signed type to the unsigned type.
+        return ut
+    else:
+        return st
+
+def _arith_binfunc_factory(name):
+    ''' Factory function producing methods for arithmetic operators '''
+    intfunc = getattr(int, name)
+    @int_method(name)
+    def _f(self, other):
+        nt = _arith_convert(type(self), type(other))
+        return nt(intfunc(int(self), int(other)))
+    return _f
+
+# divmod, rdivmod, truediv, rtruediv are considered non-arithmetic since they don't return ints
+# pow, rpow, rlshift, and rrshift are special since the LHS and RHS are very different
+_arith_binfunc = 'add sub mul floordiv mod lshift rshift and xor or'.split()
+_arith_binfunc += 'radd rsub rmul rfloordiv rmod rand rxor ror'.split()
+if not PY3K:
+    _arith_binfunc += 'div rdiv'.split()
+
+for f in _arith_binfunc:
+    s = '__%s__' % f
+    setattr(FixedInt, s, _arith_binfunc_factory(s))
+
+
+## Non-arithmetic methods (Mutable only)
+def _nonarith_unary_factory_mutable(name):
+    ''' Factory function producing methods for unary operations. '''
+    intfunc = getattr(int, name)
+    @int_method(name)
+    def _f(self):
+        return intfunc(self._val)
+    return _f
+
+_mutable_unary = 'int float'.split()
+if sys.version_info[:2] >= (2,5):
+    _mutable_unary += ['index']
+if sys.version_info[:2] >= (2,6):
+    _mutable_unary += ['trunc']
+if PY3K:
+    _mutable_unary += 'bool'.split()
+else:
+    _mutable_unary += 'nonzero long'.split()
+
+for f in _mutable_unary:
+    s = '__%s__' % f
+    setattr(MutableFixedInt, s, _nonarith_unary_factory_mutable(s))
+
+
+def _nonarith_binfunc_factory_mutable(name):
+    ''' Factory function producing methods for non-arithmetic binary operators on Mutable instances. '''
+    intfunc = getattr(int, name)
+    @int_method(name)
+    def _f(self, other):
+        return intfunc(self._val, int(other))
+    return _f
+
+_mutable_binfunc = 'truediv rtruediv divmod rdivmod rlshift rrshift'.split()
+if hasattr(int, '__cmp__'):
+    _mutable_binfunc += ['cmp']
+else:
+    _mutable_binfunc += 'lt le eq ne gt ge'.split()
+for f in _mutable_binfunc:
+    s = '__%s__' % f
+    setattr(MutableFixedInt, s, _nonarith_binfunc_factory_mutable(s))
+
+
+## In-place operators
+def _inplace_factory_mutable(iname, name, op):
+    ''' Factory function producing methods for augmented assignments on Mutable instances. '''
+    # This uses compiled operators instead of an int.__X__ function call for speed.
+    # Measured improvement is about 15% speed increase.
+    exec("""
+def _f(self, other):
+    self._val = self._rectify(self._val %s int(other))
+    return self
+globals()['_f'] = _f""" % op)
+    _f.__name__ = iname
+    doc = list.__iadd__.__doc__
+    if doc:
+        _f.__doc__ = doc.replace('__iadd__', name).replace('+=', op+'=')
+    return _f
+
+# pow is special because it takes three arguments.
+_inplace_func = 'add,+ sub,- mul,* truediv,/ floordiv,// mod,% lshift,<< rshift,<< and,& or,| xor,^'.split()
+if not PY3K:
+    _inplace_func += ['div,/']
+for f in _inplace_func:
+    fn, op = f.split(',')
+    si = '__i%s__' % fn
+    so = '__%s__' % fn
+    setattr(MutableFixedInt, si, _inplace_factory_mutable(si, so, op))
-- 
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