def ll_float(ll_str):
from pypy.rpython.annlowlevel import hlstr
from pypy.rlib.rarithmetic import break_up_float, parts_to_float
s = hlstr(ll_str)
assert s is not None
n = len(s)
beg = 0
while beg < n:
if s[beg] == ' ':
beg += 1
else:
break
if beg == n:
raise ValueError
end = n-1
while end >= 0:
if s[end] == ' ':
end -= 1
else:
break
assert end >= 0
sign, before_point, after_point, exponent = break_up_float(s[beg:end+1])
if not before_point and not after_point:
raise ValueError
return parts_to_float(sign, before_point, after_point, exponent)
def f(x):
if x == 0:
s = '1.0'
else:
s = '1e-100'
sign, beforept, afterpt, expt = break_up_float(s)
return parts_to_float(sign, beforept, afterpt, expt)
def string_to_float(s):
"""
Conversion of string to float.
This version tries to only raise on invalid literals.
Overflows should be converted to infinity whenever possible.
"""
s = strip_spaces(s)
if not s:
raise ParseStringError("empty string for float()")
# 1) parse the string into pieces.
try:
sign, before_point, after_point, exponent = break_up_float(s)
except ValueError:
raise ParseStringError("invalid literal for float()")
if not before_point and not after_point:
raise ParseStringError("invalid literal for float()")
try:
return parts_to_float(sign, before_point, after_point, exponent)
except ValueError:
raise ParseStringError("invalid literal for float()")
def ll_float(ll_str):
from pypy.rpython.annlowlevel import hlstr
from pypy.rlib.rarithmetic import break_up_float, parts_to_float
s = hlstr(ll_str)
assert s is not None
n = len(s)
beg = 0
while beg < n:
if s[beg] == ' ':
beg += 1
else:
break
if beg == n:
raise ValueError
end = n - 1
while end >= 0:
if s[end] == ' ':
end -= 1
else:
break
assert end >= 0
sign, before_point, after_point, exponent = break_up_float(s[beg:end +
1])
if not before_point and not after_point:
raise ValueError
return parts_to_float(sign, before_point, after_point, exponent)
def string_to_float(s):
"""
Conversion of string to float.
This version tries to only raise on invalid literals.
Overflows should be converted to infinity whenever possible.
"""
s = strip_spaces(s)
if not s:
raise ParseStringError("empty string for float()")
# 1) parse the string into pieces.
try:
sign, before_point, after_point, exponent = break_up_float(s)
except ValueError:
raise ParseStringError("invalid literal for float()")
if not before_point and not after_point:
raise ParseStringError("invalid literal for float()")
try:
return parts_to_float(sign, before_point, after_point, exponent)
except ValueError:
raise ParseStringError("invalid literal for float()")
def f(x):
if x == 0:
s = '1.0'
else:
s = '1e-100'
sign, beforept, afterpt, expt = break_up_float(s)
return parts_to_float(sign, beforept, afterpt, expt)
def oofakeimpl(sign, beforept, afterpt, exponent):
return rarithmetic.parts_to_float(sign._str, beforept._str, afterpt._str, exponent._str)
def load_float(loader):
if readchr(loader) != TYPE_FLOAT:
raise ValueError("expected a float")
length = ord(readchr(loader))
s = readstr(loader, length)
return parts_to_float(*break_up_float(s))
def fn(i):
sign, beforept, afterpt, exponent = parts[i]
return parts_to_float(sign, beforept, afterpt, exponent)
def ll_strtod_parts_to_float(sign, beforept, afterpt, exponent):
return rarithmetic.parts_to_float(LLSupport.from_rstr(sign),
LLSupport.from_rstr(beforept),
LLSupport.from_rstr(afterpt),
LLSupport.from_rstr(exponent))
def f(a, b, c, d):
a,b,c,d = hlstr(a), hlstr(b), hlstr(c), hlstr(d)
return rarithmetic.parts_to_float(a, b, c, d)
def fn(sign, beforept, afterpt, exponent):
return parts_to_float(sign, beforept, afterpt, exponent)
def fn(i):
sign, beforept, afterpt, exponent = parts[i]
return parts_to_float(sign, beforept, afterpt, exponent)
def fn(sign, beforept, afterpt, exponent):
return parts_to_float(sign, beforept, afterpt, exponent)
def oofakeimpl(sign, beforept, afterpt, exponent):
return rarithmetic.parts_to_float(sign._str, beforept._str,
afterpt._str, exponent._str)
def load_float(loader):
if readchr(loader) != TYPE_FLOAT:
raise ValueError("expected a float")
length = ord(readchr(loader))
s = readstr(loader, length)
return parts_to_float(*break_up_float(s))
def f(a, b, c, d):
a, b, c, d = hlstr(a), hlstr(b), hlstr(c), hlstr(d)
return rarithmetic.parts_to_float(a, b, c, d)
