Z3
Public Member Functions
FPNumRef Class Reference

FP Numerals. More...

+ 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 (self, biased=True)
 
def exponent_as_long (self, biased=True)
 
def exponent_as_bv (self, biased=True)
 
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)
 
- Public Member Functions inherited from FPRef
def sort (self)
 
def ebits (self)
 
def sbits (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_kind (self)
 
def __eq__ (self, other)
 
def __hash__ (self)
 
def __ne__ (self, other)
 
def params (self)
 
def decl (self)
 
def num_args (self)
 
def arg (self, idx)
 
def children (self)
 
- Public Member Functions inherited from AstRef
def __init__ (self, ast, ctx=None)
 
def __del__ (self)
 
def __deepcopy__ (self, memo={})
 
def __str__ (self)
 
def __repr__ (self)
 
def __nonzero__ (self)
 
def __bool__ (self)
 
def sexpr (self)
 
def ctx_ref (self)
 
def eq (self, other)
 
def translate (self, target)
 
def __copy__ (self)
 
def hash (self)
 
- Public Member Functions inherited from Z3PPObject
def use_pp (self)
 

Additional Inherited Members

- Data Fields inherited from AstRef
 ast
 
 ctx
 

Detailed Description

FP Numerals.

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 9080 of file z3py.py.

Member Function Documentation

◆ as_string()

def as_string (   self)
Return a Z3 floating point expression as a Python string.

Reimplemented from FPRef.

Definition at line 9194 of file z3py.py.

9194  def as_string(self):
9195  s = Z3_get_numeral_string(self.ctx.ref(), self.as_ast())
9196  return ("FPVal(%s, %s)" % (s, self.sort()))
9197 

◆ exponent()

def exponent (   self,
  biased = True 
)

Definition at line 9137 of file z3py.py.

9137  def exponent(self, biased=True):
9138  return Z3_fpa_get_numeral_exponent_string(self.ctx.ref(), self.as_ast(), biased)
9139 

◆ exponent_as_bv()

def exponent_as_bv (   self,
  biased = True 
)

Definition at line 9156 of file z3py.py.

9156  def exponent_as_bv(self, biased=True):
9157  return BitVecNumRef(Z3_fpa_get_numeral_exponent_bv(self.ctx.ref(), self.as_ast(), biased), self.ctx)
9158 

◆ exponent_as_long()

def exponent_as_long (   self,
  biased = True 
)

Definition at line 9146 of file z3py.py.

9146  def exponent_as_long(self, biased=True):
9147  ptr = (ctypes.c_longlong * 1)()
9148  if not Z3_fpa_get_numeral_exponent_int64(self.ctx.ref(), self.as_ast(), ptr, biased):
9149  raise Z3Exception("error retrieving the exponent of a numeral.")
9150  return ptr[0]
9151 

◆ isInf()

def isInf (   self)

Definition at line 9164 of file z3py.py.

9164  def isInf(self):
9165  return Z3_fpa_is_numeral_inf(self.ctx.ref(), self.as_ast())
9166 

◆ isNaN()

def isNaN (   self)

Definition at line 9160 of file z3py.py.

9160  def isNaN(self):
9161  return Z3_fpa_is_numeral_nan(self.ctx.ref(), self.as_ast())
9162 

◆ isNegative()

def isNegative (   self)

Definition at line 9184 of file z3py.py.

9184  def isNegative(self):
9185  return Z3_fpa_is_numeral_negative(self.ctx.ref(), self.as_ast())
9186 

◆ isNormal()

def isNormal (   self)

Definition at line 9172 of file z3py.py.

9172  def isNormal(self):
9173  return Z3_fpa_is_numeral_normal(self.ctx.ref(), self.as_ast())
9174 

◆ isPositive()

def isPositive (   self)

Definition at line 9180 of file z3py.py.

9180  def isPositive(self):
9181  return Z3_fpa_is_numeral_positive(self.ctx.ref(), self.as_ast())
9182 

◆ isSubnormal()

def isSubnormal (   self)

Definition at line 9176 of file z3py.py.

9176  def isSubnormal(self):
9177  return Z3_fpa_is_numeral_subnormal(self.ctx.ref(), self.as_ast())
9178 

◆ isZero()

def isZero (   self)

Definition at line 9168 of file z3py.py.

9168  def isZero(self):
9169  return Z3_fpa_is_numeral_zero(self.ctx.ref(), self.as_ast())
9170 

◆ sign()

def sign (   self)

Definition at line 9090 of file z3py.py.

9090  def sign(self):
9091  l = (ctypes.c_int)()
9092  if Z3_fpa_get_numeral_sign(self.ctx.ref(), self.as_ast(), byref(l)) == False:
9093  raise Z3Exception("error retrieving the sign of a numeral.")
9094  return l.value != 0
9095 

◆ sign_as_bv()

def sign_as_bv (   self)

Definition at line 9100 of file z3py.py.

9100  def sign_as_bv(self):
9101  return BitVecNumRef(Z3_fpa_get_numeral_sign_bv(self.ctx.ref(), self.as_ast()), self.ctx)
9102 

◆ significand()

def significand (   self)

Definition at line 9109 of file z3py.py.

9109  def significand(self):
9110  return Z3_fpa_get_numeral_significand_string(self.ctx.ref(), self.as_ast())
9111 

◆ significand_as_bv()

def significand_as_bv (   self)

Definition at line 9128 of file z3py.py.

9128  def significand_as_bv(self):
9129  return BitVecNumRef(Z3_fpa_get_numeral_significand_bv(self.ctx.ref(), self.as_ast()), self.ctx)
9130 

◆ significand_as_long()

def significand_as_long (   self)

Definition at line 9118 of file z3py.py.

9118  def significand_as_long(self):
9119  ptr = (ctypes.c_ulonglong * 1)()
9120  if not Z3_fpa_get_numeral_significand_uint64(self.ctx.ref(), self.as_ast(), ptr):
9121  raise Z3Exception("error retrieving the significand of a numeral.")
9122  return ptr[0]
9123 
Z3_fpa_is_numeral_positive
bool Z3_API Z3_fpa_is_numeral_positive(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is positive.
Z3_fpa_is_numeral_inf
bool Z3_API Z3_fpa_is_numeral_inf(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is a +oo or -oo.
Z3_fpa_get_numeral_exponent_bv
Z3_ast Z3_API Z3_fpa_get_numeral_exponent_bv(Z3_context c, Z3_ast t, bool biased)
Retrieves the exponent of a floating-point literal as a bit-vector expression.
Z3_fpa_get_numeral_exponent_int64
bool Z3_API Z3_fpa_get_numeral_exponent_int64(Z3_context c, Z3_ast t, int64_t *n, bool biased)
Return the exponent value of a floating-point numeral as a signed 64-bit integer.
Z3_fpa_is_numeral_negative
bool Z3_API Z3_fpa_is_numeral_negative(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is negative.
Z3_get_numeral_string
Z3_string Z3_API Z3_get_numeral_string(Z3_context c, Z3_ast a)
Return numeral value, as a decimal string of a numeric constant term.
Z3_fpa_get_numeral_significand_uint64
bool Z3_API Z3_fpa_get_numeral_significand_uint64(Z3_context c, Z3_ast t, uint64_t *n)
Return the significand value of a floating-point numeral as a uint64.
Z3_fpa_get_numeral_sign_bv
Z3_ast Z3_API Z3_fpa_get_numeral_sign_bv(Z3_context c, Z3_ast t)
Retrieves the sign of a floating-point literal as a bit-vector expression.
Z3_fpa_is_numeral_nan
bool Z3_API Z3_fpa_is_numeral_nan(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is a NaN.
Z3_fpa_get_numeral_significand_string
Z3_string Z3_API Z3_fpa_get_numeral_significand_string(Z3_context c, Z3_ast t)
Return the significand value of a floating-point numeral as a string.
Z3_fpa_get_numeral_exponent_string
Z3_string Z3_API Z3_fpa_get_numeral_exponent_string(Z3_context c, Z3_ast t, bool biased)
Return the exponent value of a floating-point numeral as a string.
Z3_fpa_is_numeral_subnormal
bool Z3_API Z3_fpa_is_numeral_subnormal(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is subnormal.
Z3_fpa_get_numeral_sign
bool Z3_API Z3_fpa_get_numeral_sign(Z3_context c, Z3_ast t, int *sgn)
Retrieves the sign of a floating-point literal.
Z3_fpa_is_numeral_normal
bool Z3_API Z3_fpa_is_numeral_normal(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is normal.
Z3_fpa_is_numeral_zero
bool Z3_API Z3_fpa_is_numeral_zero(Z3_context c, Z3_ast t)
Checks whether a given floating-point numeral is +zero or -zero.
Z3_fpa_get_numeral_significand_bv
Z3_ast Z3_API Z3_fpa_get_numeral_significand_bv(Z3_context c, Z3_ast t)
Retrieves the significand of a floating-point literal as a bit-vector expression.