code: def weibull_max_pdf(x, c):
      if x < 0:
          return c * math.exp((c - 1) * math.log(-x) - ((-x) ** c))
      return 0.0
  
imports: import math
  import numbers
  import numpy
  from scipy import stats
  from scipy import special
  from ._qmc import check_random_state, Halton, QMCEngine
  from ._unuran.unuran_wrapper import NumericalInversePolynomial
  from scipy._lib._util import check_random_state
label_desc: Use image node_id 16 for calling a global function with example usage: weibull_max_pdf(x, c) and returns: int, unknown