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[avr-libc-dev] [patch #3729] Printf for integers speed up
From: |
Dmitry Xmelkov |
Subject: |
[avr-libc-dev] [patch #3729] Printf for integers speed up |
Date: |
Sun, 15 Jul 2012 09:46:28 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:2.0.1) Gecko/20110328 Firefox/4.0.1 |
Follow-up Comment #8, patch #3729 (project avr-libc):
Georg-Johann Lay rewrite ultoa() function by inlining
division 32:8. In result the total size and speed are
improved. See the discussion on 'avr-gcc-list'.
In contrast to dmix's fast function the Georg-Johann Lay's
variant is work with all possible bases.
Changes are (in comparison to original):
1. ltoa() calls ultoa() (extra entry).
2. Small optimization: initialization of bits counter is
excluded (32*8=256).
3. This is debatable: run time radix check. The cost is
only 5 words, but there is no risk of overhead in case
variable radix. Thougths?
(file #26206)
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- [avr-libc-dev] [patch #3729] Printf for integers speed up,
Dmitry Xmelkov <=