Information for RPM R-bit-1.1.14-2.fc30.riscv64.rpm
| ID | 302086 | |||||||||||||||||||||
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| Name | R-bit | |||||||||||||||||||||
| Version | 1.1.14 | |||||||||||||||||||||
| Release | 2.fc30 | |||||||||||||||||||||
| Epoch | ||||||||||||||||||||||
| Arch | riscv64 | |||||||||||||||||||||
| 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). | |||||||||||||||||||||
| Build Time | 2018-12-06 00:05:32 GMT | |||||||||||||||||||||
| Size | 242.71 KB | |||||||||||||||||||||
| 7f86632988137e167f7a1dec7445b734 | ||||||||||||||||||||||
| License | GPLv2 | |||||||||||||||||||||
| Buildroot | f30-build-37192-21212 | |||||||||||||||||||||
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| Enhances | No Enhances | |||||||||||||||||||||
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