GY-63_MS5611/libraries/integer24
2023-06-27 18:28:02 +02:00
..
.github 0.1.0 integer24 2023-06-22 18:50:03 +02:00
examples 0.1.1 integer24 2023-06-27 18:28:02 +02:00
test 0.1.0 integer24 2023-06-22 18:50:03 +02:00
.arduino-ci.yml 0.1.0 integer24 2023-06-22 18:50:03 +02:00
CHANGELOG.md 0.1.1 integer24 2023-06-27 18:28:02 +02:00
integer24.h 0.1.1 integer24 2023-06-27 18:28:02 +02:00
keywords.txt 0.1.0 integer24 2023-06-22 18:50:03 +02:00
library.json 0.1.1 integer24 2023-06-27 18:28:02 +02:00
library.properties 0.1.1 integer24 2023-06-27 18:28:02 +02:00
LICENSE 0.1.0 integer24 2023-06-22 18:50:03 +02:00
README.md 0.1.1 integer24 2023-06-27 18:28:02 +02:00

Arduino CI Arduino-lint JSON check License: MIT GitHub release

integer24

Arduino library for the integer24 data types uint24_t and int24_t.

Description

The integer24 is an experimental library to implement support for the following two 24 bit data types:

  • int24_t
  • uint24_t

Version 0.1.0 implements a typedef for both types.

Note: AVR does support __uint24 and __int24 which uses only 3 bytes. This allows an UNO to have ~30% more elements (in theory).

This library is only (limited) tested with AVR - UNO.
So use with care.

Range

platform type minimum maximum notes
AVR uint24_t 0 16777215 __uint24
AVR int24_t -8388608 8388607 __int24
other uint24_t 0 4294967296 uint32_t for now
other int24_t -2147483648 2147483648 int32_t for now

Note the range for other platforms may change in the future to those matching AVR.

If other platforms are known to implement (3byte) int24 data types please let me know so I can add these.

Known limitations

  • The AVR uint24_t and int24_t cannot be printed without casting.
    • see integer24_explore_printing.ino
  • Arduino-CI does not implement __int24 __uint24 so no tests can be done.

Future

Must

  • get hands on experience, especially AVR
  • document what is learned.

Should

  • implement char * convert24(int24_t) and char * convert24(uint24_t)
    • length = 8 + \0 = 9
    • fprintf(buf, "%d", (uint32_t)val); ?
    • char * itoa ( int value, char * str, int base );
    • see integer24_explore_printing.ino

Could

  • implement a class for both types
    • implement printTo()
    • basic math, comparison, negation, ...

Won't