def applyPower(self, conf_list, power):
mtop = clnum.mpf(max(conf_list)[0])
s = clnum.mpf(0.0)
for t in conf_list:
t[0] = pow(power, pow(power, mtop - clnum.mpf(t[0])))
s += t[0]
for t in conf_list:
t[0] = t[0]/s
return conf_list
def number_str(s, prec=0, prefer_cmpf=False):
'''Given a string, try to convert it to one of the supported number types.
The following are applied in order: int, long, mpq, mpf, cmpq, cmpf unless
prefer_cmpf is True. Then cmpq and cmpf are swapped.
Integers (int,long) can have an optional base prefix:
0x - hex
0o - octal
0b - binary
The floating point forms (mpf,cmpf) accept an optional prec parameter which
defaults to the current clnum module default.
'''
s = _clean_str(s)
# Save and remove the sign since it interferes with the base recognition.
sign = 1
si = s
if s.startswith('-'):
sign = -1
si = s[1:]
elif s.startswith('+'):
si = s[1:]
# Identify the base to use for the conversion.
bases = {'0X':16, '0O':8, '0B':2}
prefix = si[:2]
base = 10
if prefix in bases:
si = si[2:]
base = bases[prefix]
try:
return sign*int(si, base)
except ValueError:
pass
try:
return sign*long(si, base)
except ValueError:
pass
if base != 10:
raise ValueError('Cannot apply base prefix to non-integers')
# Import the clnum module here to avoid circular import when clnum is
# initializing.
import clnum
# NOTE: The original string is used from here on because the modified form
# would cause errors in complex numbers.
try:
return clnum.mpq(s)
except ValueError:
pass
try:
return clnum.mpf(s, prec=prec)
except ValueError:
pass
if prefer_cmpf:
try:
return clnum.cmpf(s, prec=prec)
except ValueError:
pass
try:
return clnum.cmpq(s)
except ValueError:
pass
else:
try:
return clnum.cmpq(s)
except ValueError:
pass
try:
return clnum.cmpf(s, prec=prec)
except ValueError:
pass
raise ValueError('Cannot convert string to a number')
