[Numpy-svn] [numpy/numpy] c96736: ENH: Add geomspace function

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/numpy/numpy
  Commit: c96736198c01861aa8d7ea2b57876648eb999c61
      https://github.com/numpy/numpy/commit/c96736198c01861aa8d7ea2b57876648eb999c61
  Author: Endolith <endolith at gmail.com>
  Date:   2016-06-20 (Mon, 20 Jun 2016)

  Changed paths:
    M numpy/core/function_base.py
    M numpy/core/tests/test_function_base.py

  Log Message:
  -----------
  ENH: Add geomspace function

Like logspace, but specifying start and stop directly, without having to
specify the base.

Purely imaginary or purely negative real sequences are converted to
positive real, computed, and converted back, so there are no negligible
real or imaginary parts.  Instead of

array([  6.12323400e-17 +1.00000000e+00j,
   6.12323400e-16 +1.00000000e+01j,
   6.12323400e-15 +1.00000000e+02j,
   6.12323400e-14 +1.00000000e+03j])

it outputs array([ 0.   +1.j,  0.  +10.j,  0. +100.j,  0.+1000.j])

If dtype is complex it does the math in complex so it can leave
the real line and follow a spiral.

TST: Added tests for geomspace and more tests for logspace, making
PhysicalQuantities tests work for all types of functions

PEP8: __all__ after imports, line wrapping


  Commit: e53570dda20ba7863b1aa225a069a206b9d725e2
      https://github.com/numpy/numpy/commit/e53570dda20ba7863b1aa225a069a206b9d725e2
  Author: endolith <endolith at gmail.com>
  Date:   2016-06-21 (Tue, 21 Jun 2016)

  Changed paths:
    M doc/release/1.12.0-notes.rst
    M doc/source/reference/routines.array-creation.rst

  Log Message:
  -----------
  DOC: Add geomspace to function list, release notes


  Commit: 70f50b8cbb1cd09c2dd108abe36ed211b9e0a071
      https://github.com/numpy/numpy/commit/70f50b8cbb1cd09c2dd108abe36ed211b9e0a071
  Author: Charles Harris <charlesr.harris at gmail.com>
  Date:   2016-06-21 (Tue, 21 Jun 2016)

  Changed paths:
    M doc/release/1.12.0-notes.rst
    M doc/source/reference/routines.array-creation.rst
    M numpy/core/function_base.py
    M numpy/core/tests/test_function_base.py

  Log Message:
  -----------
  Merge pull request #7268 from endolith/geomspace

ENH: add geomspace function


Compare: https://github.com/numpy/numpy/compare/f902cfd0e10f...70f50b8cbb1c