On Tue, 2015-09-15 at 23:35 -0400, Marcus D. Leech wrote: > On 09/15/2015 11:15 PM, Dennis Glatting wrote: > > With the VOLK library, is there a way to compute the log10() of > > each > > 32f in a buffer? > > > > That is: > > > > for( int i = 0; i < num; ++i ) > > buf[i] = std::log10( buf[i]); > > > > I only see log2() in the library but don't know if there is an easy > > way > > to compute log10(). > > > > > > Thanks. > Define "fast". >
Faster than the code fragment above. I see log2(), pow(), sin(), and other kernels in the library and /assumed/ there must be some way of log10() if only through a combination of kernel calls. > Ordinarily, one does a log10 to convert into engineering units at the > back of, for example, a power-measurement chain. > > There's usually no reason to do that in the middle of a flow-graph, > where things can stay in linear units. > 1) Working with VOLK to learn VOLK. 2) Having fun with vectors. 3) Generating power data points for plotting across a selected set of samples. > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
