TMS320C6674: Want to understand the C66X's DSP_minerror function

Dennis Tsai

Prodigy 60 points

Part Number: TMS320C6674

Tool/software:

Hi TI's experts,

The description in C66X DSPLIB is unclear about the definition of GSP0_TABLE and errCoefs.

Please help to explain the definition and provide me an example of how to use this function.

Appreciated!!

Detailed Description


int	DSP_minerror (const short restrict GSP0_TABLE, const short restrict errCoefs, int *restrict max_index)

Function Documentation

int DSP_minerror	(	const short *restrict	GSP0_TABLE,
		const short *restrict	errCoefs,
		int *restrict	max_index
	)

Returns Maximum dot product result

Parameters:

	GSP0_TABLE[9256]*	= GSP0 terms array. Must be double-word aligned
	errCoefs[9]	= Array of error coefficients
	max_index	= Pointer to GSP0_TABLE[max_index] found

BRs,

Dennis

26 days ago

0 Shankari G 26 days ago

TI__Mastermind 25535 points

Dennis,

Please provide the version details of DSP LIB.

Let me have a look at it and get back.

Regards

Shankari G

0 Dennis Tsai 26 days ago in reply to Shankari G

Prodigy 60 points

Hi Shankari,

The DSPLIB as below:

dsplib_c66x_3_4_0_0

Thanks.

Dennis

0 Shankari G 26 days ago in reply to Dennis Tsai

TI__Mastermind 25535 points

Dennis,

Let me have a look at it and get back in a day or two.

Regards

Shankari G

0 Dennis Tsai 21 days ago in reply to Shankari G

Prodigy 60 points

Hi Shankari,

Any update?

BRs,

Dennis

0 Praveen Rao 12 days ago in reply to Dennis Tsai

TI__Mastermind 39422 points

Hi Dennis,

We can understand that the description may not be apparent when reading the documentation; however, you can always refer to the actual implementation of the DSP_minerror function in the accompanying source code implementation.

See that in the SDK installation path:
<SDK_PATH>/dsplib_c66x_3_4_0_0/packages/ti/dsplib/src/DSP_minerror/c66/DSP_minerror.c

For example usage, see:
<SDK_PATH>/dsplib_c66x_3_4_0_0/packages/ti/dsplib/src/DSP_minerror/c66/DSP_minerror_d.c

We hope this helps.

Thanks.

Processors

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TMS320C6674: Want to understand the C66X's DSP_minerror function

Detailed Description

Function Documentation