==========================
SciPy 1.5.2 Release Notes
==========================

.. contents::

SciPy 1.5.2 is a bug-fix release with no new features
compared to 1.5.1.

Authors
=======

* Peter Bell
* Tobias Biester +
* Evgeni Burovski
* Thomas A Caswell
* Ralf Gommers
* Sturla Molden
* Andrew Nelson
* ofirr +
* Sambit Panda
* Ilhan Polat
* Tyler Reddy
* Atsushi Sakai
* Pauli Virtanen

A total of 13 people contributed to this release.
People with a "+" by their names contributed a patch for the first time.
This list of names is automatically generated, and may not be fully complete.


Issues closed for 1.5.2
-----------------------

* `#3847 <https://github.com/scipy/scipy/issues/3847>`__: Crash of interpolate.splprep(task=-1)
* `#7395 <https://github.com/scipy/scipy/issues/7395>`__: splprep segfaults if fixed knots are specified
* `#10761 <https://github.com/scipy/scipy/issues/10761>`__: scipy.signal.convolve2d produces incorrect values for large arrays
* `#11971 <https://github.com/scipy/scipy/issues/11971>`__: DOC: search in devdocs returns wrong link
* `#12155 <https://github.com/scipy/scipy/issues/12155>`__: BUG: Fix permutation of distance matrices in scipy.stats.multiscale_graphcorr
* `#12203 <https://github.com/scipy/scipy/issues/12203>`__: Unable to install on PyPy 7.3.1 (Python 3.6.9)
* `#12316 <https://github.com/scipy/scipy/issues/12316>`__: negative scipy.spatial.distance.correlation
* `#12422 <https://github.com/scipy/scipy/issues/12422>`__: BUG: slsqp: ValueError: failed to initialize intent(inout) array...
* `#12428 <https://github.com/scipy/scipy/issues/12428>`__: stats.truncnorm.rvs() never returns a scalar in 1.5
* `#12441 <https://github.com/scipy/scipy/issues/12441>`__: eigvalsh inconsistent eigvals= subset_by_index=
* `#12445 <https://github.com/scipy/scipy/issues/12445>`__: DOC: scipy.linalg.eigh
* `#12449 <https://github.com/scipy/scipy/issues/12449>`__: Warnings are not filtered in csr_matrix.sum()
* `#12469 <https://github.com/scipy/scipy/issues/12469>`__: SciPy 1.9 exception in LSQSphereBivariateSpline
* `#12487 <https://github.com/scipy/scipy/issues/12487>`__: BUG: optimize: incorrect result from approx_fprime
* `#12493 <https://github.com/scipy/scipy/issues/12493>`__: CI: GitHub Actions for maintenance branches
* `#12533 <https://github.com/scipy/scipy/issues/12533>`__: eigh gives incorrect results
* `#12579 <https://github.com/scipy/scipy/issues/12579>`__: BLD, MAINT: distutils issues in wheels repo

Pull requests for 1.5.2
-----------------------

* `#12156 <https://github.com/scipy/scipy/pull/12156>`__: BUG: Fix permutation of distance matrices in scipy.stats.multiscale_graphcorr
* `#12238 <https://github.com/scipy/scipy/pull/12238>`__: BUG: Use 64-bit indexing in convolve2d to avoid overflow
* `#12256 <https://github.com/scipy/scipy/pull/12256>`__: BLD: Build lsap as a single extension instead of extension +...
* `#12320 <https://github.com/scipy/scipy/pull/12320>`__: BUG: spatial: avoid returning negative correlation distance
* `#12383 <https://github.com/scipy/scipy/pull/12383>`__: ENH: Make cKDTree.tree more efficient
* `#12392 <https://github.com/scipy/scipy/pull/12392>`__: DOC: update scipy-sphinx-theme
* `#12430 <https://github.com/scipy/scipy/pull/12430>`__: BUG: truncnorm and geninvgauss never return scalars from rvs
* `#12437 <https://github.com/scipy/scipy/pull/12437>`__: BUG: optimize: cast bounds to floats in new_bounds_to_old/old_bounds_to_new
* `#12442 <https://github.com/scipy/scipy/pull/12442>`__: MAINT:linalg: Fix for input args of eigvalsh
* `#12461 <https://github.com/scipy/scipy/pull/12461>`__: MAINT: sparse: write matrix/asmatrix wrappers without warning...
* `#12478 <https://github.com/scipy/scipy/pull/12478>`__: BUG: fix array_like input defects and add tests for all functions...
* `#12488 <https://github.com/scipy/scipy/pull/12488>`__: BUG: fix approx_derivative step size. Closes #12487
* `#12500 <https://github.com/scipy/scipy/pull/12500>`__: CI: actions branch trigger fix
* `#12501 <https://github.com/scipy/scipy/pull/12501>`__: CI: actions branch trigger fix
* `#12504 <https://github.com/scipy/scipy/pull/12504>`__: BUG: cKDTreeNode use after free
* `#12529 <https://github.com/scipy/scipy/pull/12529>`__: MAINT: allow graceful docs re-upload
* `#12538 <https://github.com/scipy/scipy/pull/12538>`__: BUG:linalg: eigh type parameter handling corrected
* `#12560 <https://github.com/scipy/scipy/pull/12560>`__: MAINT: truncnorm.rvs compatibility for \`Generator\`
* `#12562 <https://github.com/scipy/scipy/pull/12562>`__: redo gh-12188: fix segfaults in splprep with fixed knots
* `#12586 <https://github.com/scipy/scipy/pull/12586>`__: BLD: Add -std=c99 to sigtools to compile with C99
* `#12590 <https://github.com/scipy/scipy/pull/12590>`__: CI: Add GCC 4.8 entry to travis build matrix
* `#12591 <https://github.com/scipy/scipy/pull/12591>`__: BLD: fix cython error on master-branch cython