Information for RPM R-bit-1.1.15.2-1.fc33.riscv64.rpm
| ID | 559750 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Name | R-bit | |||||||||
| Version | 1.1.15.2 | |||||||||
| Release | 1.fc33 | |||||||||
| Epoch | ||||||||||
| Arch | riscv64 | |||||||||
| Summary | 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). | |||||||||
| Build Time | 2020-03-27 19:53:32 GMT | |||||||||
| Size | 250.09 KB | |||||||||
| b53f60d1357489761d7ade4000e8b69e | ||||||||||
| License | GPLv2 | |||||||||
| Buildroot | f33-build-129386-40671 | |||||||||
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| Obsoletes | No Obsoletes | |||||||||
| Conflicts | No Conflicts | |||||||||
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| Recommends | No Recommends | |||||||||
| Suggests | No Suggests | |||||||||
| Supplements | No Supplements | |||||||||
| Enhances | No Enhances | |||||||||
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| Component of | No Buildroots |
