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In the Embedded SDK DSP Function Library Preformance Section (12.3) there are charts showing the instruction cycles for a particular function. Many of these tables have colums labled AS, BFP, and NS. For the life of me, I can't figure out what these mean. I have searched up and down that particular piece of documentation and can't find a thing. Some one throw me a bone (I'm sure Art knows the answer). Jacob |
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Embedded SDK DSP Function Library Preformance Section
Started by ●October 31, 2002
Reply by ●October 31, 20022002-10-31
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These abbreviations stand for:
AS -> Auto scaling BFP -> Block floating point scaling NS -> No scaling
Each one is described in the appropriate FFT documentation, for example see chapter 11.3.11, Real Fast Fourier Transform.
Leonard
-----Original
Message-----
In the Embedded
SDK DSP Function Library Preformance
Section (12.3) Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: m...@yahoogroups.com To Post: m...@yahoogroups.com To Leave: m...@yahoogroups.com Archives: http://www.yahoogroups.com/group/motoroladsp More Groups: http://www.dsprelated.com/groups.php3 ">Yahoo! Terms of Service. |
Reply by ●October 31, 20022002-10-31
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OK, here goes: AS = AutoScaling BFP = BlockFloatingPoint NS = NoScaling I got this from the following file: ...\src\dsp56824evm\nos\signal\dspfunc\dfrcifft.asm Where "..." is the base directory where you installed the SDK. Also, I did NOT find this information in the SDK documentation. Regards, Art Johnson Senior Systems Analyst PMC Prime Mover Controls Inc. 3600 Gilmore Way Burnaby, B.C., Canada V5G 4R8 Phone: 604 433-4644 FAX: 604 433-5570 Email: http://www.pmc-controls.com -----Original Message----- From: Jacob Christ [mailto:] Sent: Thursday, October 31, 2002 11:31 AM To: Subject: Embedded SDK DSP Function Library Preformance Section In the Embedded SDK DSP Function Library Preformance Section (12.3) there are charts showing the instruction cycles for a particular function. Many of these tables have colums labled AS, BFP, and NS. For the life of me, I can't figure out what these mean. I have searched up and down that particular piece of documentation and can't find a thing. Some one throw me a bone (I'm sure Art knows the answer). Jacob |
Reply by ●October 31, 20022002-10-31
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Oops, the file name is actually "dfr16cifft.asm !!! ---------------------------------- OK, here goes: AS = AutoScaling BFP = BlockFloatingPoint NS = NoScaling I got this from the following file: ...\src\dsp56824evm\nos\signal\dspfunc\dfrcifft.asm Where "..." is the base directory where you installed the SDK. Also, I did NOT find this information in the SDK documentation. Regards, Art Johnson Senior Systems Analyst PMC Prime Mover Controls Inc. 3600 Gilmore Way Burnaby, B.C., Canada V5G 4R8 Phone: 604 433-4644 FAX: 604 433-5570 Email: http://www.pmc-controls.com -----Original Message----- From: Jacob Christ [mailto:] Sent: Thursday, October 31, 2002 11:31 AM To: Subject: Embedded SDK DSP Function Library Preformance Section In the Embedded SDK DSP Function Library Preformance Section (12.3) there are charts showing the instruction cycles for a particular function. Many of these tables have colums labled AS, BFP, and NS. For the life of me, I can't figure out what these mean. I have searched up and down that particular piece of documentation and can't find a thing. Some one throw me a bone (I'm sure Art knows the answer). Jacob |
