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# !/usr/bin/env python
import optparse
import re
#-------------------------------------------------------------------------------
def getTypeLength(cmpfile):
# read header, determine type length in bits
typelength = 0
typelength_s =""
cmpfile.readline()
tmp = cmpfile.readline()
if tmp[0] == "D":
typelength = 64
typelength_s = "double"
else:
typelength = 32
typelength_s = "float"
return typelength,typelength_s
#-------------------------------------------------------------------------------
def getYaxisRange(name):
lr = -5000
hr = 5000
if "Asin" in name or "Acos" in name:
lr = -1
hr = 1
if "Log" in name or "Isqrt" in name:
lr = 0
if "Exp" in name:
lr = -705
hr = 705
if "Expf" in name:
lr = -85
hr = 85
return (lr,hr)
#-------------------------------------------------------------------------------
def getFilenamesFromDir(nick,dirname):
import os
return filter (lambda filename: re.match("comparison__" + nick + "__(.*).txt",filename), os.listdir(dirname))
#-------------------------------------------------------------------------------
def fill_histos(cmpfile,histo1D,histo2D):
#read lines and process them
while 1:
line = cmpfile.readline()
if line == "":
break
m=re.match("(.*) (.*) (.*) (.*) (.*)",line)
inputval=float(m.group(5))
db=int(m.group(4))
# fill histograms
histo1D.Fill(db)
histo2D.Fill(inputval,db)
#-------------------------------------------------------------------------------
def compare(nick,dirname):
import ROOT
# Some globals for the style
ROOT.gROOT.SetStyle("Plain")
ROOT.gROOT.SetBatch()
ROOT.gStyle.SetPalette(1)
# Do it for all function variants
ofile = ROOT.TFile("%s_histos.root" %nick,"RECREATE")
ofile.cd()
#python3 returns an iterator instead of a a list
# convert to list to be able to run on p2 & p3
filenames = list( getFilenamesFromDir(nick,dirname) )
print ( str( len(filenames) ) + " files found." )
for filename in filenames:
print ( "Studying " + filename )
cmpfile = open(filename)
typelength,typelength_s = getTypeLength(cmpfile)
m=re.match("comparison__" + nick + "__(.*).txt" ,filename)
fcn_name=m.group(1)
# read rest of header
for i in range(1,5):
cmpfile.readline()
# xaxis range
xmin,xmax=(-0.5,typelength+0.5)
xNbins=typelength+1
# set up Root 1D histo
dbhisto = ROOT.TH1F("Diffbit_"+fcn_name,
fcn_name+" diffbit for "+nick+";Diffbit;#",
xNbins,
xmin,xmax)
dbhisto.SetLineColor(ROOT.kBlue)
dbhisto.SetLineWidth(2)
dbhisto.GetYaxis().SetTitleOffset(1)
# setup diffbit VS input histogram
ymin,ymax=getYaxisRange(fcn_name)
dbVSinhisto = ROOT.TH2F("DiffVsInput_"+fcn_name,
fcn_name+" diffbit vs input for "+nick+";Input;Diffbit",
100,ymin,ymax,
xNbins,xmin,xmax)
fill_histos(cmpfile,dbhisto,dbVSinhisto)
# draw and save 1D histogram
dbcanvas = ROOT.TCanvas("dbcanv_" + fcn_name, fcn_name + " diffbit for " + nick + " canvas" ,600,600)
dbcanvas.cd()
dbcanvas.SetLogy()
dbhisto.Draw()
dbcanvas.Print(nick + "_" + str(typelength_s) + "_" + fcn_name + "_dbhisto.png" )
dbhisto.Write()
# draw and save 2D histogram
dbVSincanvas = ROOT.TCanvas("dbVSincanv_"+ fcn_name, fcn_name + " diffbit for " + nick + " canvas",600,600)
dbVSincanvas.cd()
dbVSinhisto.Draw("COLZ")
dbVSincanvas.Print(nick + "_" + str(typelength_s) + "_" + fcn_name + "_dbVSinhisto.png" )
dbVSinhisto.Write()
ofile.Close()
#-------------------------------------------------------------------------------
def create_parser():
import sys
# set up cmd options
cmdParser = optparse.OptionParser(usage="%prog -n=<nick>")
cmdParser.add_option("-n","--nick",dest="nick",help="Determines which comparison files should be used.",default="")
cmdParser.add_option("-d","--dir",dest="dirname",help="Directory to be looked at.",default="./")
#parse options and retrieve needed parameters
(options,args) = cmdParser.parse_args()
if(options.nick == ""):
cmdParser.print_help()
sys.exit(1)
return options
#-------------------------------------------------------------------------------
if __name__ == "__main__":
options = create_parser()
compare(options.nick,options.dirname)
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