Message77721
| Author | mark.dickinson |
|---|---|
| Recipients | fredrikj, loewis, mark.dickinson, rhettinger, terry.reedy, vstinner |
| Date | 2008-12-13.09:26:11 |
| SpamBayes Score | 0.0005085584 |
| Marked as misclassified | No |
| Message-id | <1229160432.18.0.983141755998.issue3439@psf.upfronthosting.co.za> |
| In-reply-to |
| Content | |
|---|---|
About the name: Java's Bignum has a 'significantBits' method, which apparently returns the position of the MSB (i.e., numbits - 1). GMP has mpz_sizeinbase; mpz_sizeinbase(n, 2) is almost the same as numbits, except that mpz_sizeinbase(0, 2) is 1, not 0. Mathematica has BitLength. I quite like this. Googling for 'ilog2' returns a good few relevant hits; again, this is really numbits - 1, not numbits. How about n.bitlength? |
|
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2008-12-13 09:27:12 | mark.dickinson | set | recipients: + mark.dickinson, loewis, rhettinger, terry.reedy, vstinner, fredrikj |
| 2008-12-13 09:27:12 | mark.dickinson | set | messageid: <1229160432.18.0.983141755998.issue3439@psf.upfronthosting.co.za> |
| 2008-12-13 09:26:11 | mark.dickinson | link | issue3439 messages |
| 2008-12-13 09:26:11 | mark.dickinson | create | |