search for: expf

We've got both an sqrtf and an expf opcode in our architecture. If I call sqrt() on the C side, I see the sqrtf opcode show up in the generated assembly. However, if I call exp() on the C side, I don't see the expf opcode show up on the generated assembly, I see a call to an exp function from libm. Here's what we've got...

I've been trying to figure out how to prevent a column that is the result of an aggregate function call so that I can use it in further calculations. For example, I would like to aggregate the expf for the data.frame by sp (character) and dbh (double d=rounded to integer) using the command: > st2 <- aggregate( ntrs$expf, by=list(sp=ntrs$sp,dbh=ntrs$dbh), sum ) > st2$expf <- st2$x / 20 > st2$basal.area <- st2$dbh^2 * st2$expf Warning message: "^" not meaningful fo...

...ses of 5cm (or something like it), and I only know how to do it using code like, signif <- symnum( stems$dbh, corr = FALSE, na = FALSE, cutpoints = c(0,10,20,30,40,999), symbols = c(0,10,20,30,40) ) rt <- data.frame( stems$expf, signif = ordered( signif, levels = c(0,10,20,30,40) ) st <- aggregate( rt$stems.expf, by=list(signif), sum ) Is there a one line command to do this? -- Jeff D. Hamann Forest Informatics, Inc. PO Box 1421 Corvallis, Oregon 97339-1421 phone 541-754-1428 fax 541-752-02...

...to "cbind()" the lists together to create a "cross tab" report or simply bind them together somehow the function returns a list that looks like the following: > all$BM $species [1] "BM" $vbar.nobs [1] 3 $vbar.sum [1] 54.05435 $count.nobs [1] 20 $basal.area [1] 26 $expf [1] 5.339182 > so there are different variable types in the list (meaning I can't use cbind?) to create a table with more than one column for stringing together multiple species. I tried to use rbind and got similar results. Tried unlist, but the values get cast into strings (which would b...

...-1)^k*t^2k / 2^k*k! (¡Æ is from n=0 to ¡Þ) This series can be integrated term by term to obtain the formula ¦µ(z) = 1/ 2 + ( 1/ sqrt(2¦Ð) ) * ¡Æ (-1)^k*z^(2k+1) / (2^k*k! *(2k+1)) (¡Æ is from n=0 to ¡Þ) I know how to write the R function for exponential function e^x expf = function (x) { x=ifelse((neg=(x<0)),-x,x) n=0;term=1 oldsum=0; newsum=1 while(any(newsum != oldsum)) { oldsum=newsum n=n+1 term = term*x/n...

Hi, I wonder what is the right way to target an old glibc? I have a machine which is up to date (glibc 2.32 and clang+lld 10.0.1). So far I've been able to target older glibc by having a C file containing: __asm__(".symver powf,powf at GLIBC_2.2.5"); __asm__(".symver expf,expf at GLIBC_2.2.5"); __asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); __asm__(".symver log2f,log2f at GLIBC_2.2.5"); __asm__(".symver logf,logf at GLIBC_2.2.5"); __asm__(".symver log,log at GLIBC_2.2.5"); __asm__(".symver log2,log2 at GLIBC_2.2.5&q...

...exp > > Then the undefined symbol 'exp' will be renamed to 'exp at GLIBC_2.2.5' > and get bound to the old version at link time. It will thus work with > old glibc. I have one .cpp file with: __asm__(".symver powf,powf at GLIBC_2.2.5"); __asm__(".symver expf,expf at GLIBC_2.2.5"); __asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); __asm__(".symver log2f,log2f at GLIBC_2.2.5"); __asm__(".symver logf,logf at GLIBC_2.2.5"); __asm__(".symver log,log at GLIBC_2.2.5"); __asm__(".symver log2,log2 at GLIBC_2.2.5&q...

...libc? > > > >I have a machine which is up to date (glibc 2.32 and clang+lld 10.0.1). > > > >So far I've been able to target older glibc by having a C file containing: > > > >__asm__(".symver powf,powf at GLIBC_2.2.5"); > >__asm__(".symver expf,expf at GLIBC_2.2.5"); > >__asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); > >__asm__(".symver log2f,log2f at GLIBC_2.2.5"); > >__asm__(".symver logf,logf at GLIBC_2.2.5"); > > > >__asm__(".symver log,log at GLIBC_2.2.5"); &gt...

I would like to produce a set of values, on the same chart, from an sql table that is structured like... species dbh ht expf DF 1.2 8.9 10.0 DF 2.4 17.3 12.4342 DF 3.1 20.9 56.76 PP 2.3 16.9 100.0 PP 12.8 97.3 40.3 PP 8.2 63.0 98.34 . . . SS blah, blah, blah... is it possible to, using a single command in the plot command to plot the different groups on the same plot or will I have to iterate through the data set (sql s...

...es */ SEXP plant_list; SEXP plant_plot_sexp; SEXP plant_plant_sexp; SEXP plant_sp_code_sexp; SEXP plant_d6_sexp; SEXP plant_d6_area_sexp; SEXP plant_dbh_sexp; SEXP plant_basal_area_sexp; SEXP plant_tht_sexp; SEXP plant_cr_sexp; SEXP plant_n_stems_sexp; SEXP plant_expf_sexp; SEXP plant_crown_width_sexp; SEXP plant_crown_area_sexp; SEXP plant_user_code_sexp; char temp_sp_code[16]; struct SAMPLE_RECORD *s_ptr; struct SPECIES_RECORD *sp_ptr; s_ptr = (struct SAMPLE_RECORD *)calloc( 1, sizeof( struct SAMPLE_RECORD ) ); /* s...

...ed to 'exp at GLIBC_2.2.5' > > > and get bound to the old version at link time. It will thus work with > > > old glibc. > > > > I have one .cpp file with: > > > > __asm__(".symver powf,powf at GLIBC_2.2.5"); > > __asm__(".symver expf,expf at GLIBC_2.2.5"); > > __asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); > > __asm__(".symver log2f,log2f at GLIBC_2.2.5"); > > __asm__(".symver logf,logf at GLIBC_2.2.5"); > > > > __asm__(".symver log,log at GLIBC_2.2.5");...

...o-math-errno test_vectorize.c // Vectorization will not occur with: // clang -O2 -S -emit-llvm -fno-math-errno -ffast-math test_vectorize.c #include <math.h> void test_vectorize_exp(long n, float* restrict y, float* restrict x) { long i; for (i = 0; i < n; i++) { x[i] = expf(y[i]); } }

...symbol 'exp' will be renamed to 'exp at GLIBC_2.2.5' > > and get bound to the old version at link time. It will thus work with > > old glibc. > > I have one .cpp file with: > > __asm__(".symver powf,powf at GLIBC_2.2.5"); > __asm__(".symver expf,expf at GLIBC_2.2.5"); > __asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); > __asm__(".symver log2f,log2f at GLIBC_2.2.5"); > __asm__(".symver logf,logf at GLIBC_2.2.5"); > > __asm__(".symver log,log at GLIBC_2.2.5"); > __asm__(".symv...

...I have a machine which is up to date (glibc 2.32 and clang+lld 10.0.1). > > > > > >So far I've been able to target older glibc by having a C file containing: > > > > > >__asm__(".symver powf,powf at GLIBC_2.2.5"); > > >__asm__(".symver expf,expf at GLIBC_2.2.5"); > > >__asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); > > >__asm__(".symver log2f,log2f at GLIBC_2.2.5"); > > >__asm__(".symver logf,logf at GLIBC_2.2.5"); > > > > > >__asm__(".symver log,log a...

On Fri, Apr 02, 2004 at 12:33:13AM -0500, Jean-Marc Valin wrote: > Do you have any sample code for that? Also, how do you tell autoconf to > append '-msse' without running into problems when CFLAGS is not set (and > usually defaults to -g -O2, but not always). Example patch attached. It only tries if the use passes --enable-sse; testing by target arch as Aron suggested is

...5' >> > > and get bound to the old version at link time. It will thus work with >> > > old glibc. >> > >> > I have one .cpp file with: >> > >> > __asm__(".symver powf,powf at GLIBC_2.2.5"); >> > __asm__(".symver expf,expf at GLIBC_2.2.5"); >> > __asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); >> > __asm__(".symver log2f,log2f at GLIBC_2.2.5"); >> > __asm__(".symver logf,logf at GLIBC_2.2.5"); >> > >> > __asm__(".symver log,log at...

...up to date (glibc 2.32 and clang+lld 10.0.1). > > > > > > > >So far I've been able to target older glibc by having a C file containing: > > > > > > > >__asm__(".symver powf,powf at GLIBC_2.2.5"); > > > >__asm__(".symver expf,expf at GLIBC_2.2.5"); > > > >__asm__(".symver exp2f,exp2f at GLIBC_2.2.5"); > > > >__asm__(".symver log2f,log2f at GLIBC_2.2.5"); > > > >__asm__(".symver logf,logf at GLIBC_2.2.5"); > > > > > > > >__asm_...

Thank you very much for your help Fāng-ruì Sòng. I've tried various things like linking directly to libm-2.32 but it didn't work, it seems that libm-2.32 still pulls libmvec. I have the following linker flags: CLANG_LDFLAGS="-fuse-ld=lld -static-libstdc++ -static-libgcc -fvisibility=hidden -fdata-sections -ffunction-sections" CLANG_LDFLAGS="$CLANG_LDFLAGS

...FLOAT_MATH_LIB # define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b)) #endif -#ifndef __GNUC__ -# define NO_FLOAT_MATH_LIB -#endif - -#ifdef DARWIN -# define NO_FLOAT_MATH_LIB -#endif - -#ifndef NO_FLOAT_MATH_LIB +#ifdef HAVE_FLOAT_MATH_LIB # define sqrt sqrtf # define log logf # define exp expf --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages...

...2001 @@ -42,15 +42,7 @@ # define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b)) #endif -#ifndef __GNUC__ -# define NO_FLOAT_MATH_LIB -#endif - -#ifdef DARWIN -# define NO_FLOAT_MATH_LIB -#endif - -#ifndef NO_FLOAT_MATH_LIB +#ifdef HAVE_SQRTF # define sqrt sqrtf # define log logf # define exp expf -- Christian "naddy" Weisgerber naddy@mips.inka.de --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'vorbis-dev-request@xiph.org' containing only...