def Compute(self, s, es, b, eb):
# Initialization
value = Measure()
# Converting in floating value
S = float(s)
B = float(b)
ES = float(es)
EB = float(eb)
# Mean value
try:
if self.formula == 1:
value.mean = S / B
elif self.formula == 2:
value.mean = S / sqrt(B)
elif self.formula == 3:
value.mean = S / (S + B)
elif self.formula == 4:
value.mean = S / sqrt(S + B)
elif self.formula == 5:
value.mean = S / sqrt(S + B + (self.x * B)**2)
except ZeroDivisionError: # division by 0
value.mean = -1
except ValueError: # negative sqrt
value.mean = -1
# Error value
try:
if self.formula == 1:
value.error = 1./(B**2)*\
sqrt(B**2*ES**2+S**2*EB**2)
elif self.formula == 2:
value.error = 1./(S+B)**2*\
sqrt(B**2*ES**2+S**2*EB**2)
elif self.formula == 3:
value.error = 1./(2*pow(B,3./2.))*\
sqrt((2*B)**2*ES**2+S**2*EB**2)
elif self.formula == 4:
value.error = 1./(2*pow(S+B,3./2.))*\
sqrt((S+2*B)**2*ES**2+S**2*EB**2)
elif self.formula == 5:
value.error = 1./(2*pow(S+B+self.x*B**2,3./2.))*\
sqrt((S+2*B+2*self.x*B**2)**2*ES**2+S**2*(2*self.x*B+1)**2*EB**2)
except ZeroDivisionError: # division by 0
value.mean = -1
except ValueError: # negative sqrt
value.mean = -1
return value
def calculateBSratio(self,B,eB,S,eS):
value = Measure()
value.mean = self.Mformula.Eval(S,B)
value.error = self.Eformula.Eval(S,B,eS,eB)
return value
def calculateBSratio(self, B, eB, S, eS):
value = Measure()
value.mean = self.Mformula.Eval(S, B)
value.error = self.Eformula.Eval(S, B, eS, eB)
return value
