def float_to_w_int(space, floatvalue):
try:
# the extra case makes sure that this method returns
# bignums for the same numbers as the parser does.
# this is checked in rubyspecs
if floatvalue < 0:
return space.newint(-ovfcheck_float_to_int(-floatvalue))
else:
return space.newint(ovfcheck_float_to_int(floatvalue))
except OverflowError:
return space.newbigint_fromfloat(floatvalue)
def float_to_w_int(space, floatvalue):
try:
# the extra case makes sure that this method returns
# bignums for the same numbers as the parser does.
# this is checked in rubyspecs
if floatvalue < 0:
return space.newint(-ovfcheck_float_to_int(-floatvalue))
else:
return space.newint(ovfcheck_float_to_int(floatvalue))
except OverflowError:
return space.newbigint_fromfloat(floatvalue)
def descr_trunc(self, space):
try:
value = ovfcheck_float_to_int(self.floatval)
except OverflowError:
return self.descr_long(space)
else:
return space.newint(value)
def descr_trunc(self, space):
try:
value = ovfcheck_float_to_int(self.floatval)
except OverflowError:
return self.descr_long(space)
else:
return space.newint(value)
def arith_pow_same(self, other):
assert isinstance(other, values.W_Fixnum)
# XXX nonsense
try:
res = rarithmetic.ovfcheck_float_to_int(math.pow(self.value, other.value))
except OverflowError:
return self.arith_pow(values.W_Bignum(rbigint.fromint(other.value)))
return values.W_Fixnum(res)
def descr_trunc(self, space):
whole = math.modf(self.floatval)[1]
try:
value = ovfcheck_float_to_int(whole)
except OverflowError:
return self.descr_long(space)
else:
return space.newint(value)
def arith_pow_same(self, other):
assert isinstance(other, values.W_Fixnum)
# XXX nonsense
try:
res = rarithmetic.ovfcheck_float_to_int(math.pow(self.value, other.value))
except OverflowError:
return self.arith_pow(values.W_Bignum(rbigint.fromint(other.value)))
return values.W_Fixnum(res)
def newint_from_float(space, floatval):
"""This is also used from module/math/interp_math.py"""
try:
value = ovfcheck_float_to_int(floatval)
except OverflowError:
return newlong_from_float(space, floatval)
else:
return space.newint(value)
def trunc__Float(space, w_floatobj):
whole = math.modf(w_floatobj.floatval)[1]
try:
value = ovfcheck_float_to_int(whole)
except OverflowError:
return long__Float(space, w_floatobj)
else:
return space.newint(value)
def int(self, space):
if (type(self) is not W_FloatObject and
space.is_overloaded(self, space.w_float, '__int__')):
return W_Root.int(self, space)
try:
value = ovfcheck_float_to_int(self.floatval)
except OverflowError:
return space.long(self)
else:
return space.newint(value)
def visit_DECIMALLITERAL(self, node):
try:
f = float(node.additional_info)
i = ovfcheck_float_to_int(f)
if i != f:
return operations.ConstantFloat(f)
else:
return operations.ConstantInt(i)
except (ValueError, OverflowError):
return operations.ConstantFloat(float(node.additional_info))
def visit_DECIMALLITERAL(self, node):
pos = self.get_pos(node)
try:
f = float(node.additional_info)
i = ovfcheck_float_to_int(f)
if i != f:
return operations.FloatNumber(pos, f)
else:
return operations.IntNumber(pos, i)
except (ValueError, OverflowError):
return operations.FloatNumber(pos, float(node.additional_info))
def visit_DECIMALLITERAL(self, node):
pos = self.get_pos(node)
try:
f = float(node.additional_info)
i = ovfcheck_float_to_int(f)
if i != f:
return operations.FloatNumber(pos, f)
else:
return operations.IntNumber(pos, i)
except (ValueError, OverflowError):
return operations.FloatNumber(pos, float(node.additional_info))
def visit_numericliteral(self, node):
number = ""
for node in node.children:
number += node.additional_info
try:
f = float(number)
i = ovfcheck_float_to_int(f)
if i != f:
return operations.ConstantFloat(f)
else:
return operations.ConstantInt(i)
except (ValueError, OverflowError):
return operations.ConstantFloat(float(node.additional_info))
def arith_round(self):
fval = self.floatval
if fval >= 0:
factor = 1
else:
factor = -1
fval = fval * factor
try:
val = ovfcheck_float_to_int(math.floor(fval + 0.5) * factor)
except OverflowError:
return term.BigInt(rbigint.fromfloat(math.floor(self.floatval + 0.5) * factor))
return term.Number(val)
def enable(space, fileno, period=0.01): # default 100 Hz
from pypy.module._vmprof import Module
mod_vmprof = space.getbuiltinmodule('_vmprof')
assert isinstance(mod_vmprof, Module)
#
try:
period_usec = ovfcheck_float_to_int(period * 1000000.0 + 0.5)
if period_usec <= 0 or period_usec >= 1e6:
# we don't want seconds here at all
raise ValueError
except (ValueError, OverflowError):
raise OperationError(space.w_ValueError,
space.wrap("'period' too large or non positive"))
#
mod_vmprof.vmprof.enable(space, fileno, period_usec)
def enable(space, fileno, period=0.01): # default 100 Hz
from pypy.module._vmprof import Module
mod_vmprof = space.getbuiltinmodule('_vmprof')
assert isinstance(mod_vmprof, Module)
#
try:
period_usec = ovfcheck_float_to_int(period * 1000000.0 + 0.5)
if period_usec <= 0 or period_usec >= 1e6:
# we don't want seconds here at all
raise ValueError
except (ValueError, OverflowError):
raise OperationError(space.w_ValueError,
space.wrap("'period' too large or non positive"))
#
mod_vmprof.vmprof.enable(space, fileno, period_usec)
def _hash_float(space, v):
if math.isnan(v):
return 0
# This is designed so that Python numbers of different types
# that compare equal hash to the same value; otherwise comparisons
# of mapping keys will turn out weird.
fractpart, intpart = math.modf(v)
if fractpart == 0.0:
# This must return the same hash as an equal int or long.
try:
x = ovfcheck_float_to_int(intpart)
except OverflowError:
# Convert to long and use its hash.
try:
w_lval = W_LongObject.fromfloat(space, v)
except (OverflowError, ValueError):
# can't convert to long int -- arbitrary
if v < 0:
return -271828
else:
return 314159
return space.int_w(space.hash(w_lval))
else:
# Fits in a C long == a Python int.
from pypy.objspace.std.intobject import _hash_int
return _hash_int(x)
# The fractional part is non-zero, so we don't have to worry about
# making this match the hash of some other type.
# Use frexp to get at the bits in the double.
# Since the VAX D double format has 56 mantissa bits, which is the
# most of any double format in use, each of these parts may have as
# many as (but no more than) 56 significant bits.
# So, assuming sizeof(long) >= 4, each part can be broken into two
# longs; frexp and multiplication are used to do that.
# Also, since the Cray double format has 15 exponent bits, which is
# the most of any double format in use, shifting the exponent field
# left by 15 won't overflow a long (again assuming sizeof(long) >= 4).
v, expo = math.frexp(v)
v *= 2147483648.0 # 2**31
hipart = int(v) # take the top 32 bits
v = (v - hipart) * 2147483648.0 # get the next 32 bits
x = intmask(hipart + int(v) + (expo << 15))
x -= (x == -1)
return x
def _get_inttime(space, w_seconds):
# w_seconds can be a wrapped None (it will be automatically wrapped
# in the callers, so we never get a real None here).
if space.is_none(w_seconds):
seconds = pytime.time()
else:
seconds = space.float_w(w_seconds)
try:
seconds = ovfcheck_float_to_int(seconds)
t = rffi.r_time_t(seconds)
if rffi.cast(lltype.Signed, t) != seconds:
raise OverflowError
except OverflowError:
raise OperationError(space.w_ValueError,
space.wrap("time argument too large"))
return t
def visit_numericliteral(self, node):
number = ""
for node in node.children:
number += node.additional_info
try:
f = float(number)
i = ovfcheck_float_to_int(f)
if i != f:
index = self.declare_constant_float(f)
return operations.ConstantFloat(f, index)
else:
index = self.declare_constant_int(i)
return operations.ConstantInt(i, index)
except (ValueError, OverflowError):
f = float(node.additional_info)
index = self.declare_constant_float(f)
return operations.ConstantFloat(f, index)
def _hash_float(space, v):
if isnan(v):
return 0
# This is designed so that Python numbers of different types
# that compare equal hash to the same value; otherwise comparisons
# of mapping keys will turn out weird.
fractpart, intpart = math.modf(v)
if fractpart == 0.0:
# This must return the same hash as an equal int or long.
try:
x = ovfcheck_float_to_int(intpart)
# Fits in a C long == a Python int, so is its own hash.
return x
except OverflowError:
# Convert to long and use its hash.
try:
w_lval = W_LongObject.fromfloat(space, v)
except (OverflowError, ValueError):
# can't convert to long int -- arbitrary
if v < 0:
return -271828
else:
return 314159
return space.int_w(space.hash(w_lval))
# The fractional part is non-zero, so we don't have to worry about
# making this match the hash of some other type.
# Use frexp to get at the bits in the double.
# Since the VAX D double format has 56 mantissa bits, which is the
# most of any double format in use, each of these parts may have as
# many as (but no more than) 56 significant bits.
# So, assuming sizeof(long) >= 4, each part can be broken into two
# longs; frexp and multiplication are used to do that.
# Also, since the Cray double format has 15 exponent bits, which is
# the most of any double format in use, shifting the exponent field
# left by 15 won't overflow a long (again assuming sizeof(long) >= 4).
v, expo = math.frexp(v)
v *= 2147483648.0 # 2**31
hipart = int(v) # take the top 32 bits
v = (v - hipart) * 2147483648.0 # get the next 32 bits
x = intmask(hipart + int(v) + (expo << 15))
return x
def arith_float_fractional_part(self):
try:
val = rarithmetic.ovfcheck_float_to_int(self.value)
except OverflowError:
val = rbigint.fromfloat(self.value).tofloat()
return values.W_Flonum(float(self.value - val))
def _arith_float_fractional_part(self):
try:
val = rarithmetic.ovfcheck_float_to_int(self.value)
except OverflowError:
val = rbigint.fromfloat(self.value).tofloat()
return float(self.value - val)
def _parse_int(string, radix):
assert isinstance(string, unicode)
NUMERALS = u'0123456789abcdefghijklmnopqrstuvwxyz'
input_string = string
s = _strip(input_string)
sign = 1
if s.startswith(u'-'):
sign = -1
if s.startswith(u'-') or s.startswith(u'+'):
s = s[1:]
r = radix
strip_prefix = True
if r != 0:
if r < 2 or r > 36:
return NAN
if r != 16:
strip_prefix = False
else:
r = 10
if strip_prefix:
if len(s) >= 2 and (s.startswith(u'0x') or s.startswith(u'0X')):
s = s[2:]
r = 16
# TODO this is not specified in ecma 5 but tests expect it and it's implemented in v8!
elif len(s) > 1 and s.startswith(u'0'):
r = 8
numerals = NUMERALS[:r]
z = []
for char in s:
uni_ord = unicodedb.tolower(ord(char))
if uni_ord > 128:
break
c = chr(uni_ord)
if c not in numerals:
break
z.append(c)
if not z:
return NAN
num_str = ''.join(z)
try:
number = int(num_str, r)
try:
from rpython.rlib.rarithmetic import ovfcheck_float_to_int
ovfcheck_float_to_int(number)
except OverflowError:
number = float(number)
return sign * number
except OverflowError:
return INFINITY
except ValueError:
pass
return NAN
def fromfloat(value):
try:
val = rarithmetic.ovfcheck_float_to_int(value)
except OverflowError:
return W_Bignum(rbigint.fromfloat(value))
return W_Fixnum(val)
def _time_primitive(primitive, activation_record, interpreter):
# Returns an integer representing a point in time. Should be used for benching
activation_record.push(interpreter.space.new_integer(ovfcheck_float_to_int(time.time() * 1000000)))
def func(interp, s_frame, f):
try:
return interp.space.wrap_int(ovfcheck_float_to_int(f))
except OverflowError:
raise PrimitiveFailedError
def _parse_int(string, radix):
assert isinstance(string, unicode)
NUMERALS = u'0123456789abcdefghijklmnopqrstuvwxyz'
input_string = string
s = _strip(input_string)
sign = 1
if s.startswith(u'-'):
sign = -1
if s.startswith(u'-') or s.startswith(u'+'):
s = s[1:]
r = radix
strip_prefix = True
if r != 0:
if r < 2 or r > 36:
return NAN
if r != 16:
strip_prefix = False
else:
r = 10
if strip_prefix:
if len(s) >= 2 and (s.startswith(u'0x') or s.startswith(u'0X')):
s = s[2:]
r = 16
# TODO this is not specified in ecma 5 but tests expect it and it's implemented in v8!
elif len(s) > 1 and s.startswith(u'0'):
r = 8
numerals = NUMERALS[:r]
z = []
for char in s:
uni_ord = unicodedb.tolower(ord(char))
if uni_ord > 128:
break
c = chr(uni_ord)
if c not in numerals:
break
z.append(c)
if not z:
return NAN
num_str = ''.join(z)
try:
number = int(num_str, r)
try:
from rpython.rlib.rarithmetic import ovfcheck_float_to_int
ovfcheck_float_to_int(number)
except OverflowError:
number = float(number)
return sign * number
except OverflowError:
return INFINITY
except ValueError:
pass
return NAN
def arith_ceiling(self):
try:
val = ovfcheck_float_to_int(math.ceil(self.floatval))
except OverflowError:
return term.BigInt(rbigint.fromfloat(math.ceil(self.floatval)))
return term.Number(val)
def arith_pow_number(self, other_num):
try:
res = ovfcheck_float_to_int(math.pow(other_num, self.num))
except OverflowError:
return self.arith_pow_bigint(rbigint.fromint(other_num))
return term.Number(res)
def arith_float_fractional_part(self):
try:
val = ovfcheck_float_to_int(self.floatval)
except OverflowError:
val = rbigint.fromfloat(self.floatval).tofloat()
return term.Float(float(self.floatval - val))
def arith_float_integer_part(self):
try:
val = ovfcheck_float_to_int(self.floatval)
except OverflowError:
return term.BigInt(rbigint.fromfloat(self.floatval))
return term.Number(val)
def func(fl):
try:
return ovfcheck_float_to_int(fl)
except OverflowError:
return -666
def fromfloat(value):
try:
val = rarithmetic.ovfcheck_float_to_int(value)
except OverflowError:
return W_Bignum(rbigint.fromfloat(value))
return W_Fixnum(val)
def func(fl):
try:
return ovfcheck_float_to_int(fl)
except OverflowError:
return -666
