Information for build R-bit-1.1.14-1.fc29
| ID | 32627 | |||||||||||
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| Package Name | R-bit | |||||||||||
| Version | 1.1.14 | |||||||||||
| Release | 1.fc29 | |||||||||||
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| Summary | A class for vectors of 1-bit booleans | |||||||||||
| Description | True boolean datatype (no NAs), coercion from and to logicals, integers and integer subscripts; fast boolean operators and fast summary statistics. With 'bit' vectors you can store true binary booleans {FALSE,TRUE} at the expense of 1 bit only, on a 32 bit architecture this means factor 32 less RAM and ~ factor 32 more speed on boolean operations. Due to overhead of R calls, actual speed gain depends on the size of the vector: expect gains for vectors of size > 10000 elements. Even for one-time boolean operations it can pay-off to convert to bit, the pay-off is obvious, when such components are used more than once. Reading from and writing to bit is approximately as fast as accessing standard logicals - mostly due to R's time for memory allocation. The package allows to work with pre-allocated memory for return values by calling .Call() directly: when evaluating the speed of C-access with pre-allocated vector memory, coping from bit to logical requires only 70% of the time for copying from logical to logical; and copying from logical to bit comes at a performance penalty of 150%. the package now contains further classes for representing logical selections: 'bitwhich' for very skewed selections and 'ri' for selecting ranges of values for chunked processing. All three index classes can be used for subsetting 'ff' objects (ff-2.1-0 and higher). | |||||||||||
| Built by | davidlt | |||||||||||
| State | complete | |||||||||||
| Volume | DEFAULT | |||||||||||
| Started | Wed, 06 Jun 2018 12:51:43 UTC | |||||||||||
| Completed | Wed, 06 Jun 2018 17:43:07 UTC | |||||||||||
| Task | build (f29-candidate, R-bit-1.1.14-1.fc29.src.rpm) | |||||||||||
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| Changelog | * Wed May 30 2018 Elliott Sales de Andrade <quantum.analyst@gmail.com> - 1.1.14-1 - Update to latest version * Wed May 16 2018 Tom Callaway <spot@fedoraproject.org> - 1.1.13-1 - update to 1.1-13, rebuild for R 3.5.0 * Thu Mar 08 2018 Elliott Sales de Andrade <quantum.analyst@gmail.com> 1.1.12-2 - Fix file encodings and line endings. * Thu Mar 08 2018 Elliott Sales de Andrade <quantum.analyst@gmail.com> 1.1.12-1 - initial package for Fedora |
