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need of core implementing tan inverse function in vhdl

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need of core implementing tan inverse function in vhdl by Unknown on Mar 16, 2006			Not available!
helo ppl ! i am siddhartha working as a vlsi engg in front end i badly in need of an ip core which deals with the tan inverse function i had been facing this since 2 weeks.atleast the logic behind this wud be appreciated if not the core i badly wana implement trignometric functions specially tan inverse in vhdl taking 2 binary 8 bit inputs and remenber THESE INPUTS ARE THE AMPLITUDE VALUES OF THE SIN AND COSINE WAVES I HAVE GOT AND THRU THAT I HAD TO DEVELOP THE CORE TO GET TAN and implement the tan inverse function ly which would be the final result . ex : lets p and q are the 8 bit input data implementing p/q as a division operator we shud alsoimplement tan inverse on p/q,thr ends the prj. hope u got it .....i think it wud be a challenging project as far as my experience is concerned......i wud appreciate on each and every reply u gona make on this prj..... regards....siddhartha. helo ppl ! i am siddhartha working as a vlsi engg in front end i badly in need of an ip core which deals with the tan inverse function i had been facing this since 2 weeks.atleast the logic behind this wud be appreciated if not the core i badly wana implement trignometric functions specially tan inverse in vhdl taking 2 binary 8 bit inputs and remenber THESE INPUTS ARE THE AMPLITUDE VALUES OF THE SIN AND COSINE WAVES I HAVE GOT AND THRU THAT I HAD TO DEVELOP THE CORE TO GET TAN and implement the tan inverse function ly which would be the final result . ex : lets p and q are the 8 bit input data implementing p/q as a division operator we shud alsoimplement tan inverse on p/q,thr ends the prj. hope u got it .....i think it wud be a challenging project as far as my experience is concerned......i wud appreciate on each and every reply u gona make on this prj..... regards....siddhartha.

need of core implementing tan inverse function in vhdl by Unknown on Mar 18, 2006			Not available!
hi siddharth. i am working on trignometric tables myself so this is just a guess. Try to implement it using a lookup table. Store several values of tan inverse for angles 0 to 90 depending on the accuracy you desire. i.e. when p/q is expressed in 8 bits you can have at most 256 entries in the lookup table. Store this table in a an array of registers. make a decoder which selects the appropriate register for a given value...blah blah blah... -Abhijit On 3/16/06, <A HREF="http://www.opencores.org/mailman/listinfo/cores">spy_dy172000 at yahoo.com</A> <<A HREF="http://www.opencores.org/mailman/listinfo/cores">spy_dy172000 at yahoo.com</A>> wrote: [q] helo ppl ! i am siddhartha working as a vlsi engg in front end i badly in need of an ip core which deals with the tan inverse function i had been facing this since 2 weeks.atleast the logic behind this wud be appreciated if not the core i badly wana implement trignometric functions specially tan inverse in vhdl taking 2 binary 8 bit inputs and remenber THESE INPUTS ARE THE AMPLITUDE VALUES OF THE SIN AND COSINE WAVES I HAVE GOT AND THRU THAT I HAD TO DEVELOP THE CORE TO GET TAN and implement the tan inverse function ly which would be the final result . ex : lets p and q are the 8 bit input data implementing p/q as a division operator we shud alsoimplement tan inverse on p/q,thr ends the prj. hope u got it .....i think it wud be a challenging project as far as my experience is concerned......i wud appreciate on each and every reply u gona make on this prj..... regards....siddhartha. _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] hi siddharth. i am working on trignometric tables myself so this is just a guess. Try to implement it using a lookup table. Store several values of tan inverse for angles 0 to 90 depending on the accuracy you desire. i.e. when p/q is expressed in 8 bits you can have at most 256 entries in the lookup table. Store this table in a an array of registers. make a decoder which selects the appropriate register for a given value...blah blah blah... -Abhijit On 3/16/06, spy_dy172000 at yahoo.com spy_dy172000 at yahoo.com> wrote: helo ppl ! i am siddhartha working as a vlsi engg in front end i badly in need of an ip core which deals with the tan inverse function i had been facing this since 2 weeks.atleast the logic behind this wud be appreciated if not the core i badly wana implement trignometric functions specially tan inverse in vhdl taking 2 binary 8 bit inputs and remenber THESE INPUTS ARE THE AMPLITUDE VALUES OF THE SIN AND COSINE WAVES I HAVE GOT AND THRU THAT I HAD TO DEVELOP THE CORE TO GET TAN and implement the tan inverse function ly which would be the final result . ex : lets p and q are the 8 bit input data implementing p/q as a division operator we shud alsoimplement tan inverse on p/q,thr ends the prj. hope u got it .....i think it wud be a challenging project as far as my experience is concerned......i wud appreciate on each and every reply u gona make on this prj..... regards....siddhartha. _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

need of core implementing tan inverse function in vhdl by Unknown on Mar 19, 2006			Not available!
Or use the cordic core, which is available from opencores. Richard -----Original Message----- From: <A HREF="http://www.opencores.org/mailman/listinfo/cores">cores-bounces at opencores.org</A> [mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">cores-bounces at opencores.org</A>] On Behalf Of Abhijit Krishna Sent: Saturday, March 18, 2006 4:41 PM To: Discussion list about free open source IP cores Subject: Re: [oc] need of core implementing tan inverse function in vhdl hi siddharth. i am working on trignometric tables myself so this is just a guess. Try to implement it using a lookup table. Store several values of tan inverse for angles 0 to 90 depending on the accuracy you desire. i.e. when p/q is expressed in 8 bits you can have at most 256 entries in the lookup table. Store this table in a an array of registers. make a decoder which selects the appropriate register for a given value...blah blah blah... -Abhijit On 3/16/06, <A HREF="http://www.opencores.org/mailman/listinfo/cores">spy_dy172000 at yahoo.com</A> <<A HREF="http://www.opencores.org/mailman/listinfo/cores">spy_dy172000 at yahoo.com</A>> wrote: [q] helo ppl ! i am siddhartha working as a vlsi engg in front end i badly in need of an ip core which deals with the tan inverse function i had been facing this since 2 weeks.atleast the logic behind this wud be appreciated if not the core i badly wana implement trignometric functions specially tan inverse in vhdl taking 2 binary 8 bit inputs and remenber THESE INPUTS ARE THE AMPLITUDE VALUES OF THE SIN AND COSINE WAVES I HAVE GOT AND THRU THAT I HAD TO DEVELOP THE CORE TO GET TAN and implement the tan inverse function ly which would be the final result . ex : lets p and q are the 8 bit input data implementing p/q as a division operator we shud alsoimplement tan inverse on p/q,thr ends the prj. hope u got it .....i think it wud be a challenging project as far as my experience is concerned......i wud appreciate on each and every reply u gona make on this prj..... regards....siddhartha. _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> Or use the cordic core, which is available from opencores. Richard -----Original Message----- From: cores-bounces at opencores.org [mailto:cores-bounces at opencores.org] On Behalf Of Abhijit Krishna Sent: Saturday, March 18, 2006 4:41 PM To: Discussion list about free open source IP cores Subject: Re: [oc] need of core implementing tan inverse function in vhdl hi siddharth. i am working on trignometric tables myself so this is just a guess. Try to implement it using a lookup table. Store several values of tan inverse for angles 0 to 90 depending on the accuracy you desire. i.e. when p/q is expressed in 8 bits you can have at most 256 entries in the lookup table. Store this table in a an array of registers. make a decoder which selects the appropriate register for a given value...blah blah blah... -Abhijit On 3/16/06, spy_dy172000 at yahoo.com spy_dy172000 at yahoo.com> wrote: helo ppl ! i am siddhartha working as a vlsi engg in front end i badly in need of an ip core which deals with the tan inverse function i had been facing this since 2 weeks.atleast the logic behind this wud be appreciated if not the core i badly wana implement trignometric functions specially tan inverse in vhdl taking 2 binary 8 bit inputs and remenber THESE INPUTS ARE THE AMPLITUDE VALUES OF THE SIN AND COSINE WAVES I HAVE GOT AND THRU THAT I HAD TO DEVELOP THE CORE TO GET TAN and implement the tan inverse function ly which would be the final result . ex : lets p and q are the 8 bit input data implementing p/q as a division operator we shud alsoimplement tan inverse on p/q,thr ends the prj. hope u got it .....i think it wud be a challenging project as far as my experience is concerned......i wud appreciate on each and every reply u gona make on this prj..... regards....siddhartha. _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

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