def fp_size_to_sort(size):
size_class = z3.Float64()
if size == 16:
size_class = z3.Float16()
elif size == 32:
size_class = z3.Float32()
elif size == 80:
size_class = z3.Float128()
elif size == 128:
size_class = z3.Float128()
return size_class
def _ty_sort(ty):
'Translate a Type expression to a Z3 Sort'
if isinstance(ty, IntType):
return z3.BitVecSort(ty.width)
return {
PtrType: z3.BitVecSort(64),
HalfType: z3.FloatHalf(),
SingleType: z3.Float32(),
DoubleType: z3.Float64(),
FP128Type: z3.Float128(),
X86FP80Type: z3.FPSort(15, 64),
}[type(ty)]
def prepare_float(val, signext=False, size=SIZE) -> z3.FPRef:
if z3.is_fp(val):
return val
size_class = z3.Float64()
if size == 32:
size_class = z3.Float32()
elif size == 128:
size_class = z3.Float128()
if type(val) in (int, float):
result = z3.FPVal(val)
else:
bv_val = prepare(val, signext, size)
result = z3.fpBVToFP(bv_val, size_class)
return result