FPNumRef Class Reference

Inheritance diagram for FPNumRef:

Public Member Functions
def	sign (self)
def	sign_as_bv (self)
def	significand (self)
def	significand_as_long (self)
def	significand_as_bv (self)
def	exponent
def	exponent_as_long
def	exponent_as_bv
def	isNaN (self)
def	isInf (self)
def	isZero (self)
def	isNormal (self)
def	isSubnormal (self)
def	isPositive (self)
def	isNegative (self)
def	as_string (self)
def	py_value (self)
Public Member Functions inherited from FPRef
def	sort (self)
def	ebits (self)
def	sbits (self)
def	as_string (self)
def	__le__ (self, other)
def	__lt__ (self, other)
def	__ge__ (self, other)
def	__gt__ (self, other)
def	__add__ (self, other)
def	__radd__ (self, other)
def	__sub__ (self, other)
def	__rsub__ (self, other)
def	__mul__ (self, other)
def	__rmul__ (self, other)
def	__pos__ (self)
def	__neg__ (self)
def	__div__ (self, other)
def	__rdiv__ (self, other)
def	__truediv__ (self, other)
def	__rtruediv__ (self, other)
def	__mod__ (self, other)
def	__rmod__ (self, other)
Public Member Functions inherited from ExprRef
def	as_ast (self)
def	get_id (self)
def	sort (self)
def	sort_kind (self)
def	__eq__ (self, other)
def	__hash__ (self)
def	__ne__ (self, other)
def	params (self)
def	decl (self)
def	kind (self)
def	num_args (self)
def	arg (self, idx)
def	children (self)
def	update (self, args)
def	from_string (self, s)
def	serialize (self)
Public Member Functions inherited from AstRef
def	__init__
def	__del__ (self)
def	__deepcopy__
def	__str__ (self)
def	__repr__ (self)
def	__eq__ (self, other)
def	__hash__ (self)
def	__nonzero__ (self)
def	__bool__ (self)
def	sexpr (self)
def	as_ast (self)
def	get_id (self)
def	ctx_ref (self)
def	eq (self, other)
def	translate (self, target)
def	__copy__ (self)
def	hash (self)
def	py_value (self)
Public Member Functions inherited from Z3PPObject
def	use_pp (self)

Additional Inherited Members
Data Fields inherited from AstRef
	ast
	ctx

Detailed Description

The sign of the numeral.

>>> x = FPVal(+1.0, FPSort(8, 24))
>>> x.sign()
False
>>> x = FPVal(-1.0, FPSort(8, 24))
>>> x.sign()
True

Definition at line 10139 of file z3py.py.

Member Function Documentation

def as_string

(

self

)

Definition at line 10270 of file z3py.py.

    def as_string(self):
        s = Z3_get_numeral_string(self.ctx.ref(), self.as_ast())
        return ("FPVal(%s, %s)" % (s, self.sort()))

def exponent	(		self,
			biased = True
	)

Definition at line 10203 of file z3py.py.

    def exponent(self, biased=True):
        return Z3_fpa_get_numeral_exponent_string(self.ctx.ref(), self.as_ast(), biased)

def exponent_as_bv	(		self,
			biased = True
	)

Definition at line 10224 of file z3py.py.

    def exponent_as_bv(self, biased=True):
        return BitVecNumRef(Z3_fpa_get_numeral_exponent_bv(self.ctx.ref(), self.as_ast(), biased), self.ctx)

def exponent_as_long	(		self,
			biased = True
	)

Definition at line 10213 of file z3py.py.

    def exponent_as_long(self, biased=True):
        ptr = (ctypes.c_longlong * 1)()
        if not Z3_fpa_get_numeral_exponent_int64(self.ctx.ref(), self.as_ast(), ptr, biased):
            raise Z3Exception("error retrieving the exponent of a numeral.")
        return ptr[0]

def isInf

(

self

)

Definition at line 10234 of file z3py.py.

    def isInf(self):
        return Z3_fpa_is_numeral_inf(self.ctx.ref(), self.as_ast())

def isNaN

(

self

)

Definition at line 10229 of file z3py.py.

    def isNaN(self):
        return Z3_fpa_is_numeral_nan(self.ctx.ref(), self.as_ast())

def isNegative

(

self

)

Definition at line 10259 of file z3py.py.

    def isNegative(self):
        return Z3_fpa_is_numeral_negative(self.ctx.ref(), self.as_ast())

def isNormal

(

self

)

Definition at line 10244 of file z3py.py.

    def isNormal(self):
        return Z3_fpa_is_numeral_normal(self.ctx.ref(), self.as_ast())

def isPositive

(

self

)

Definition at line 10254 of file z3py.py.

    def isPositive(self):
        return Z3_fpa_is_numeral_positive(self.ctx.ref(), self.as_ast())

def isSubnormal

(

self

)

Definition at line 10249 of file z3py.py.

    def isSubnormal(self):
        return Z3_fpa_is_numeral_subnormal(self.ctx.ref(), self.as_ast())

def isZero

(

self

)

Definition at line 10239 of file z3py.py.

    def isZero(self):
        return Z3_fpa_is_numeral_zero(self.ctx.ref(), self.as_ast())

def py_value

(

self

)

Definition at line 10274 of file z3py.py.

    def py_value(self):
        bv = simplify(fpToIEEEBV(self))
        binary = bv.py_value()
        if not isinstance(binary, int):
            return None
        # Decode the IEEE 754 binary representation
        import struct
        bytes_rep = binary.to_bytes(8, byteorder='big')
        return struct.unpack('>d', bytes_rep)[0]

def sign

(

self

)

Definition at line 10150 of file z3py.py.

    def sign(self):
        num = ctypes.c_bool()
        nsign = Z3_fpa_get_numeral_sign(self.ctx.ref(), self.as_ast(), byref(num))
        if nsign is False:
            raise Z3Exception("error retrieving the sign of a numeral.")
        return num.value != 0

def sign_as_bv

(

self

)

Definition at line 10162 of file z3py.py.

    def sign_as_bv(self):
        return BitVecNumRef(Z3_fpa_get_numeral_sign_bv(self.ctx.ref(), self.as_ast()), self.ctx)

def significand

(

self

)

Definition at line 10172 of file z3py.py.

    def significand(self):
        return Z3_fpa_get_numeral_significand_string(self.ctx.ref(), self.as_ast())

def significand_as_bv

(

self

)

Definition at line 10193 of file z3py.py.

    def significand_as_bv(self):
        return BitVecNumRef(Z3_fpa_get_numeral_significand_bv(self.ctx.ref(), self.as_ast()), self.ctx)

def significand_as_long

(

self

)

Definition at line 10182 of file z3py.py.

    def significand_as_long(self):
        ptr = (ctypes.c_ulonglong * 1)()
        if not Z3_fpa_get_numeral_significand_uint64(self.ctx.ref(), self.as_ast(), ptr):
            raise Z3Exception("error retrieving the significand of a numeral.")
        return ptr[0]