| commit | 77936fe3af9d6788c7cae73e72d34aade2744f1a | |
| author | unhelpful <unhelpful@a1c6a512-1295-4272-9138-f99709370657> | |
| Fri, 30 Jan 2009 10:52:30 +0000 (30 10:52 +0000) | ||
| committer | unhelpful <unhelpful@a1c6a512-1295-4272-9138-f99709370657> | |
| Fri, 30 Jan 2009 10:52:30 +0000 (30 10:52 +0000) | ||
| tree | 11e1cafefa29f74c763b3a54e9823814886feb59 | treesnapshot (tar.gz zip) |
| parent | 526ffd2cb5e50e6ea6613e0aac4c1dc9d1075f84 | commitdiff |
per Jens Arnold's suggestion:
use platform clz instruction only on ARMv5+, where we know it returns 32 for a 0 input, and remove the special case for 0
use binary search only to find most significant four bits, then use lookup table to add number of leading zeroes within those bits
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19888 a1c6a512-1295-4272-9138-f99709370657
use platform clz instruction only on ARMv5+, where we know it returns 32 for a 0 input, and remove the special case for 0
use binary search only to find most significant four bits, then use lookup table to add number of leading zeroes within those bits
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19888 a1c6a512-1295-4272-9138-f99709370657
| apps/plugins/pictureflow.c | diffblobblamehistory |