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differences between 32 fixed point and 32 floating point

Gaston_Melo_Arg
Mastermind 7675 points

Can anyone explain me what is the main differences?

Thanks

Gastón

  • 0
    TI__Guru** 119680 points

    Here is a video presentation on F2833x floating point, and how it differs from F28x fixed point.

    http://focus.ti.com/docs/training/catalog/events/event.jhtml?sku=OLT107003

    Here is the FPU "Primer"

    http://focus.ti.com/lit/an/spraan9a/spraan9a.pdf

    FPU Instruction Set

    http://focus.ti.com/lit/ug/sprueo2a/sprueo2a.pdf

    If your question is more generic, "Why Floating point"

    - Performance boost for many control algorithms: division, square root, sin, cos, FFT and IIR
    · Simplified software development, easier to code, don't have to worry about scaling, saturation/inversion, or knowing what fixed number scheme you are using