Thanks to visit codestin.com
Credit goes to github.com

Skip to content

BUG: Overflow in tan and tanh for large complex values #3010

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
ewmoore wants to merge 35 commits into from
Closed

BUG: Overflow in tan and tanh for large complex values #3010

Changes from 1 commit
Commits
Show all changes
35 commits
Select commit Hold shift + click to select a range
9e7be8c
BUG: Overflow in tan and tanh for large complex values
ewmoore Feb 22, 2013
f442ead
STY: npymath: tabs -> spaces, long lines
ewmoore Mar 1, 2013
d62c590
ENH: Check for, and use all C99 complex functions if available
ewmoore Mar 6, 2013
af5ff55
ENH: npymath: Use a better complex division algorithm.
ewmoore Mar 8, 2013
e6b99c9
MAINT: umath: generate the ldexp and frexp ufuncs like all the others.
ewmoore Mar 9, 2013
0fdaa54
MAINT: umath/npymath: Add ldexp and frexp to npymath
ewmoore Mar 9, 2013
2d33f7c
ENH: npymath: handle clog edge cases more carefully.
ewmoore Mar 10, 2013
50d6720
ENH: evaluate c99 complex funcs at build time
ewmoore Oct 1, 2013
d504ea1
BUG: NPY_LOGE2 is log(2)
ewmoore Oct 2, 2013
5362b35
BUG: Test aginst +/-TANH_HUGE
ewmoore Oct 2, 2013
e61e74f
TST: check for tanh(1000+0j) == 1 + 0j etc.
ewmoore Oct 2, 2013
852cd10
BUG: Fix up some corner cases in npy_cexp
ewmoore Oct 2, 2013
0f57b42
MAINT: remove debug print statement
ewmoore Oct 2, 2013
eb06557
MAINT: fix two typos in test_c99complex.c
ewmoore Oct 4, 2013
77705ab
ENH: Be more careful with large real parts in npy_cexp
ewmoore Oct 4, 2013
e574e29
ENH: Import the ccosh/ccos implementation from FreeBSD
ewmoore Oct 4, 2013
3710481
ENH: Import the csinh/csin implementation from FreeBSD
ewmoore Oct 4, 2013
a837853
ENH: Import the catanh/catan implemenation from FreeBSD
ewmoore Oct 9, 2013
36e0d8b
BUG: printf requires a literal for the first argument.
ewmoore Oct 9, 2013
330b54a
BUG: Py3 '-2j' is (NZERO - 2j) causes test failures
ewmoore Oct 9, 2013
def6327
ENH: Import the cacos,casin,cacosh,casinh implemenation from FreeBSD
ewmoore Oct 10, 2013
c8f13ee
TST: Enable signed zero branch cut tests
ewmoore Oct 10, 2013
eab5228
BUG: fix cpow tests to match what npy_cpow does.
ewmoore Oct 10, 2013
2b5f1ad
STY: long lines, whitespace
ewmoore Oct 10, 2013
1fb1b74
MAINT: remove gccisms and unbreak MSVC build.
ewmoore Oct 11, 2013
be42cae
MAINT: fix ldexp/frexp changes to compile with MSVC.
ewmoore Oct 11, 2013
ac075b2
MAINT: npy_a(exp,log,sqrt,fabs) don't really exist.
ewmoore Oct 15, 2013
79afefd
ENH: Run the test_c99complex.c tests with the test suite too.
ewmoore Oct 16, 2013
cfe9fcc
BUG: Fix tests to compile under MSVC
ewmoore Oct 21, 2013
cbc97fa
MAINT: pick sunmath.h from npy_math.h
ewmoore Oct 21, 2013
863d97d
MAINT: Update note about FreeBSD.
ewmoore Oct 22, 2013
2348023
MAINT: make sure npy_math builds when long double is double double
ewmoore Oct 24, 2013
5771dae
MAINT: move npy_(get,clear)_floatstatus() to their own file.
ewmoore Nov 7, 2013
566c15e
BUG Use the floating point status functions in build time tests
ewmoore Nov 7, 2013
503047b
MAINT: move test_c99complex.c to npymath
ewmoore Nov 7, 2013
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
TST: check for tanh(1000+0j) == 1 + 0j etc. 
This is a test for the fix for gh-2321.
  • Loading branch information
@ewmoore
ewmoore committed Feb 26, 2014
commit e61e74f2bd1709c1493fae27c2b6485ec2fa1e50
10 changes: 10 additions & 0 deletions numpy/core/tests/test_umath_complex.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -517,6 +517,16 @@ def test_special_values(self):
yield check_real_value, ncu._arg, np.nan, np.inf, np.nan, False
yield check_real_value, ncu._arg, np.inf, np.nan, np.nan, False

class TestCtan(object):
def test_simple(self):
check_complex_value(ncu.tan, 0, 1000, 0, 1, True)
check_complex_value(ncu.tan, 0, -1000, 0, -1, True)

class TestCtanh(object):
def test_simple(self):
check_complex_value(ncu.tanh, 1000, 0, 1, 0, True)
check_complex_value(ncu.tanh, -1000, 0, -1, 0, True)

def check_real_value(f, x1, y1, x, exact=True):
z1 = np.array([complex(x1, y1)])
if exact:
Expand Down