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authorMark Dickinson <mdickinson@enthought.com>2019-05-19 16:51:56 (GMT)
committerGitHub <noreply@github.com>2019-05-19 16:51:56 (GMT)
commit5c08ce9bf712acbb3f05a3a57baf51fcb534cdf0 (patch)
treef31a368cd3f31951303766f605111f9589612d44 /Lib/test/test_math.py
parent7c59362a15dfce538512ff1fce4e07d33a925cfb (diff)
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bpo-36957: Speed up math.isqrt (#13405)
* Add math.isqrt function computing the integer square root. * Code cleanup: remove redundant comments, rename some variables. * Tighten up code a bit more; use Py_XDECREF to simplify error handling. * Update Modules/mathmodule.c Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Update Modules/mathmodule.c Use real argument clinic type instead of an alias Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Add proof sketch * Updates from review. * Correct and expand documentation. * Fix bad reference handling on error; make some variables block-local; other tidying. * Style and consistency fixes. * Add missing error check; don't try to DECREF a NULL a * Simplify some error returns. * Another two test cases: - clarify that floats are rejected even if they happen to be squares of small integers - TypeError beats ValueError for a negative float * Add fast path for small inputs. Needs tests. * Speed up isqrt for n >= 2**64 as well; add extra tests. * Reduce number of test-cases to avoid dominating the run-time of test_math. * Don't perform unnecessary extra iterations when computing c_bit_length. * Abstract common uint64_t code out into a separate function. * Cleanup. * Add a missing Py_DECREF in an error branch. More cleanup. * Update Modules/mathmodule.c Add missing `static` declaration to helper function. Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Add missing backtick.
Diffstat (limited to 'Lib/test/test_math.py')
-rw-r--r--Lib/test/test_math.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index a11a344..853a0e6 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -917,6 +917,7 @@ class MathTests(unittest.TestCase):
test_values = (
list(range(1000))
+ list(range(10**6 - 1000, 10**6 + 1000))
+ + [2**e + i for e in range(60, 200) for i in range(-40, 40)]
+ [3**9999, 10**5001]
)