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chris7
Visitor II
August 30, 2004
Question

IEEE754-compliant floating-point routines in asm

  • August 30, 2004
  • 3 replies
  • 836 views
Posted on August 30, 2004 at 05:35

IEEE754-compliant floating-point routines in asm

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    3 replies

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    chris7Author
    Visitor II
    August 27, 2004
    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.
    F
    fggnrc
    Visitor II
    August 27, 2004
    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
    L
    luca239955_st
    Visitor II
    August 30, 2004
    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)

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