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Fast 16x16 Multiply with 32-bit Result

 
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itp



Joined: 30 Jan 2004
Posts: 5

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Fast 16x16 Multiply with 32-bit Result
PostPosted: Mon Jan 02, 2006 9:24 am     Reply with quote
Hi all,


Any idea for Faster 16x16 Multiply with 32-bit Result in C

Regards
Itp
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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Re: Fast 16x16 Multiply with 32-bit Result
PostPosted: Tue Jan 03, 2006 5:35 am     Reply with quote
itp wrote:
Any idea for Faster 16x16 Multiply with 32-bit Result in C
It helps if you tell us what your current situation is and how much faster you need it to be.

If you are using a PIC16 processor it helps to upgrade to a (pin compatible) PIC18 processor because of the 8-bit hardware multiplier in the PIC18.

Can you use a faster clock crystal? Most PIC18's can be clocked up to 40MHz.

www.piclist.com is a great source for alternative routines.
Ttelmah
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PostPosted: Tue Jan 03, 2006 10:36 am     Reply with quote
And of course, look at the _mul function....

Best Wishes
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