justinbeech 62b104cbfa Found free extra 256 bytes of RAM eliminate _clz use from libgcc ...

Believe it or not, changing / 2^31 to >>31 saved 256 bytes in the "d" segment.

The reason is that GCC version prior to 4.3.5 does not have a count_leading_zeros (clz) assembler macro, so it uses a 256 byte lookup table called _clz
The _clz table gets pulled in if you do 64 bit division.
This tiny change is the only place that we do long long division.
Changing to a shift saves 256 bytes of ram.

2012-02-17 09:46:05 +00:00

..

examples

change constant to float 44330.0

2012-02-15 09:10:14 -08:00

AP_Baro_BMP085_hil.cpp

Arduino 1.0 - changed all #includes of "WProgram.h", "wiring.h" and "WConstants.h to "Arduino.h".

2012-01-28 12:25:47 +09:00

AP_Baro_BMP085_hil.h

baro: fixed an integer overflow issue at high altitudes

2012-01-14 19:51:35 +11:00

AP_Baro_BMP085.cpp

Arduino 1.0 - changed all #includes of "WProgram.h", "wiring.h" and "WConstants.h to "Arduino.h".

2012-01-28 12:25:47 +09:00

AP_Baro_BMP085.h

baro: fixed an integer overflow issue at high altitudes

2012-01-14 19:51:35 +11:00

AP_Baro_MS5611.cpp

Found free extra 256 bytes of RAM eliminate _clz use from libgcc

2012-02-17 09:46:05 +00:00

AP_Baro_MS5611.h

AP_Baro: fixed some signed/unsigned warnings

2012-02-13 21:39:18 +11:00

AP_Baro.h

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