text: from matplotlib import pyplot
  import numpy
  
  f = open("data.txt", "r")
  lines = f.readlines()
  f.close()
  
  
  n = len(lines)
  
  tvec = numpy.empty(n)
  rcp = numpy.empty(n)
  rcp1s = numpy.empty(n)
  rsqrt = numpy.empty(n)
  rsqrt1s = numpy.empty(n)
  fast = numpy.empty(n)
  fast1s = numpy.empty(n)
  faster = numpy.empty(n)
  
  
  for i, line in enumerate(lines):
  
      tokens = line.split()
  
      tvec[i] = float(tokens[0])
  
      rcp[i] = float(tokens[1])
      rcp1s[i] = float(tokens[2])
      rsqrt[i] = float(tokens[3])
      rsqrt1s[i] = float(tokens[4])
      fast[i] = float(tokens[5])
      fast1s[i] = float(tokens[6])
      faster[i] = float(tokens[7])
  
  
  x_min = -4.0
  x_max = 4.0
  
  pyplot.figure(figsize=[24,13.5])
  
  cols = 4
  rows = 2
  
  pyplot.subplot(rows,cols,1)
  pyplot.plot(tvec, rcp)
  pyplot.xlim([x_min, x_max])
  pyplot.title("_mm256_rcp_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("1.0f/x error [%]")
  pyplot.grid(True)
  
  
  pyplot.subplot(rows,cols,2)
  pyplot.plot(tvec, rcp1s)
  pyplot.xlim([x_min, x_max])
  pyplot.title("simdmath::_mm256_rcp1s_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("1.0f/x error [%]")
  pyplot.grid(True)
  
  
  pyplot.subplot(rows,cols,3)
  pyplot.plot(tvec, rsqrt)
  pyplot.xlim([0.0, x_max*2])
  pyplot.title("_mm256_rsqrt_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("1.0f/sqrt(x) error [%]")
  pyplot.grid(True)
  
  
  pyplot.subplot(rows,cols,4)
  pyplot.plot(tvec, rsqrt1s)
  pyplot.xlim([0.0, x_max*2])
  pyplot.title("simdmath::_mm256_rsqrt1s_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("1.0f/sqrt(x) error [%]")
  pyplot.grid(True)
  
  
  pyplot.subplot(rows,cols,5)
  pyplot.plot(tvec, fast)
  pyplot.xlim([x_min, x_max])
  pyplot.title("simdmath::_mm256_expfast_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("exp(x) error [%]")
  pyplot.grid(True)
  
  
  pyplot.subplot(rows,cols,6)
  pyplot.plot(tvec, fast1s)
  pyplot.xlim([x_min, x_max])
  pyplot.title("simdmath::_mm256_expfast1s_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("exp(x) error [%]")
  pyplot.grid(True)
  
  
  pyplot.subplot(rows,cols,7)
  pyplot.plot(tvec, faster)
  pyplot.xlim([x_min, x_max])
  pyplot.title("simdmath::_mm256_expfaster_ps()")
  pyplot.xlabel("x")
  pyplot.ylabel("exp(x) error [%]")
  pyplot.grid(True)
  
  
  pyplot.savefig("graph.png")
  