GY-63_MS5611/libraries/IEEE754tools

IEEE754tools

Arduino library to manipulate IEEE754 float numbers fast.

Description

IEEE754tools.h contains a collection of experimental bit-hacks to speed up a number of operations on floating point numbers on the Arduino UNO. These bit-hacks started in 2010 (oldest code found), maybe even earlier.

http://en.wikipedia.org/wiki/Double_precision

http://en.wikipedia.org/wiki/Single-precision_floating-point_format

WARNING

• do not use this lib for production code unless you verified the correctness. Code is experimental, so use with care at your own risk.
• If you don't need micro-second speed ups do not use these code snippets.
• do not use for ESP32 ESP32 does things differently ==> not all code works.

Test results examples

updated for 0.2.2

example	UNO	ESP32
fastNegate	Y	Y
float2Double	Y	N
IEEE754_equal	Y	N

ESP32 - needs investigation as UNO verified code fails. (something for a long winter)

Operations

See examples

Future

must

• test with double
• test on ESP23

should

• investigate other speed ups
• bring more structure in this library.

could

• write more examples
  • example binary transfer over Serial
  • example binary transfer over Ethernet
• link to float16 in documentation