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why is the input data type is INT in FFT.asm

shuxiong jia
Prodigy 50 points

Other Parts Discussed in Thread: OMAPL138

 the example is in  C674x FLOATING Point Benchmarks , ,http://www.ti.com/lsds/ti/dsp/c6000_dsp/c674x/benchmarks.page.   the data type should be FLOAT used by the chip (omapl138) .But the input data type is INTor SHORT in the FFT.asm  file , why？

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    TI__Mastermind 35645 points

    Hi shuxiong,

    Thanks for your post.

    I believe, TI FFT asm libraries are designed that way and use IQ math on 32bit fixed point data types and also, the buffer memory addresses are prepared for this data type. Basically, fft asm libraries are used to optimize and profile DSP functions and it would be quite easy to implement this if the data type is fixed INT or SHORT.

    Thanks & regards,

    Sivaraj K

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