GNU Scientific Library - Bugs: bug #47345, arccosh(1) wrong sign
You are not allowed to post comments on this tracker with your current authentication level.
bug #47345: arccosh(1) wrong sign
Submitter: | M Welinder <terra> | ||
Submitted: | Sat 05 Mar 2016 07:07:42 PM UTC | ||
Category: | Accuracy problem | Severity: | 3 - Normal |
Operating System: | Linux | Status: | None |
Assigned to: | None | Open/Closed: | Open |
Release: | 2.1 |
Attached Files
file #38522: gsl_complex_arccosh.diff added by yuliu (1KiB - application/octet-stream - Patch for gsl_complex_arccosh following the idea of a8bd509b3f109dd168587d390bf02673bfd543c3 and gsl_complex_arccos.)
file #38404: test_acosh.c added by yuliu (7KiB - application/octet-stream - A similar issue happened for gsl_complex_cos and a special branch was added to handle the case when the input was real (see commit a8bd509b3f109dd168587d390bf02673bfd543c3). Can we do the same for this issue? gsl_complex_arccos also has a separate branch.)
file #38405: test_acosh_result added by yuliu (2KiB - application/octet-stream - A similar issue happened for gsl_complex_cos and a special branch was added to handle the case when the input was real (see commit a8bd509b3f109dd168587d390bf02673bfd543c3). Can we do the same for this issue? gsl_complex_arccos also has a separate branch.)
Depends on the following items: None found
Items that depend on this one: None found
Carbon-Copy List
Follow 3 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2016-09-16 | yuliu | Attached File | - | Added gsl_complex_arccosh.diff, #38522 | |
2016-09-02 | yuliu | Attached File | - | Added test_acosh.c, #38404 | |
Attached File | - | Added test_acosh_result, #38405 |
Powered by Savane 3.13-f8d8.
Corresponding source code
I get complex arccosh(1) -> -0.
To match acosh and gsl_complex_arccosh_real the result should
be +0.