text: """Benchmarks for peak finding related functions."""
  
  from .common import Benchmark, safe_import
  
  with safe_import():
      from scipy.signal import find_peaks, peak_prominences, peak_widths
      from scipy.misc import electrocardiogram
  
  
  class FindPeaks(Benchmark):
      """Benchmark `scipy.signal.find_peaks`.
  
      Notes
      -----
      The first value of `distance` is None in which case the benchmark shows
      the actual speed of the underlying maxima finding function.
      """
  
      param_names = ['distance']
      params = [[None, 8, 64, 512, 4096]]
  
      def setup(self, distance):
          self.x = electrocardiogram()
  
      def time_find_peaks(self, distance):
          find_peaks(self.x, distance=distance)
  
  
  class PeakProminences(Benchmark):
      """Benchmark `scipy.signal.peak_prominences`."""
  
      param_names = ['wlen']
      params = [[None, 8, 64, 512, 4096]]
  
      def setup(self, wlen):
          self.x = electrocardiogram()
          self.peaks = find_peaks(self.x)[0]
  
      def time_peak_prominences(self, wlen):
          peak_prominences(self.x, self.peaks, wlen)
  
  
  class PeakWidths(Benchmark):
      """Benchmark `scipy.signal.peak_widths`."""
  
      param_names = ['rel_height']
      params = [[0, 0.25, 0.5, 0.75, 1]]
  
      def setup(self, rel_height):
          self.x = electrocardiogram()
          self.peaks = find_peaks(self.x)[0]
          self.prominence_data = peak_prominences(self.x, self.peaks)
  
      def time_peak_widths(self, rel_height):
          peak_widths(self.x, self.peaks, rel_height, self.prominence_data)
  