Re: How can CLZ equivalent be achieved on Cortex M0 where this instruction is...
Hello, In CMSIS, Arm_Math.h, there is defined an alternative which you may use. There are some #defines around it, so if you're having trouble linking it, make sure you have the correct definitions,...
View ArticleHow can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
Looking for alternates for this instruction.
View ArticleRe: How can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
If you are interested in a better performance that beats the pants out of the brute force solution proposed above, you might use the following implementation: static __INLINE uint32_t __CLZ(uint32_t...
View ArticleClik here to view.
Re: How can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
It is worth noting that the CLZ implementation as shown is never called with, and does not support being called with, the value zero within CMSIS.The Cortex-M0 supports register based shifts, which...
View ArticleClik here to view.
Re: Re: How can CLZ equivalent be achieved on Cortex-M0 where this...
If the goal is to reduce the code size, for the price of just one more comparison in the critical path of the code, the size of the log2Lkup lookup table can be reduced from 256 to just 16 bytes. So...
View ArticleHow can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
Looking for alternates for this instruction.
View ArticleRe: How can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
It is worth noting that the CLZ implementation as shown is never called with, and does not support being called with, the value zero within CMSIS. The Cortex-M0 supports register based shifts, which...
View ArticleRe: How can CLZ equivalent be achieved on Cortex M0 where this instruction is...
Hello, In CMSIS, Arm_Math.h, there is defined an alternative which you may use. There are some #defines around it, so if you're having trouble linking it, make sure you have the correct definitions,...
View ArticleRe: How can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
If you are interested in a better performance that beats the pants out of the brute force solution proposed above, you might use the following implementation: static __INLINE uint32_t...
View ArticleRe: Re: How can CLZ equivalent be achieved on Cortex-M0 where this...
If the goal is to reduce the code size, for the price of just one more comparison in the critical path of the code, the size of the log2Lkup lookup table can be reduced from 256 to just 16 bytes. So...
View ArticleRe: How can CLZ equivalent be achieved on Cortex-M0 where this instruction is...
For an assembly language subroutine (which only takes 14 clock cycles), see A fairly quick Count Leading Zeroes for Cortex-M0.
View Article
