IEEE754-compliant floating-point routines in asm

chris7 · ‎2004-08-29

Posted on August 30, 2004 at 05:35

chris7 · ‎2004-08-27

Posted on August 27, 2004 at 12:43

Hi,

Does anyone know of a standard implementation of the IEEE754 floating point routines for the ST7 and would be willing to point me in the right direction?

Kindest regards,

Chris.

fggnrc · ‎2004-08-27

Posted on August 27, 2004 at 14:10

Chris,

the floating point routines are too heavy load for a simple microcontroller like the ST7!

Its hardware can only afford unsigned multiplication while unsigned division has to be done by a software routine.

If you need the basic floating point operations, try to encode your data in a fixed point representation and use integer operations to ''simulate'' the floating point ones.

Regards,

EtaPthi

luca239955_st · ‎2004-08-29

Posted on August 30, 2004 at 05:35

Hi,

The Cosmic compiler/libraries provide this implementation, including the source code for all operations (mostly asm for the basic operations, mostly C for the complex ones).

Hope this helps.

Regards,

Luca (Cosmic)