search for: hypot

...)' without overflow or >> destructive underflow: for example it still works when both A and >> B are between `1e200' and `1e300' (in IEEE double precision). -- "Problem" is : The GNU C library (and other C libraries ??) defines a function double hypot(double x, double y) with identical semantics to our pythag() from above The Info (e.g. in Linux Emacs C-h i "m libc") about "Libc" contains (in the section "Exponentiation and Logarithms"): ============================= >> - Function: double hypot (double X, d...

...tle longer ------------------------------------------------------------------------ R News of newest devel has three entries about the change: CHANGES IN R VERSION 2.14.0: DEPRECATED AND DEFUNCT: o The entry point pythag formerly in Rmath.h is defunct: use instead the C99 function hypot. CHANGES IN R VERSION 2.13.0: C-LEVEL FACILITIES: o pythag duplicated the C99 function hypot. It is no longer provided, but is used a substitute for hypot in the very unlikely event that the latter is not available. DEPRECATED & DEFUNCT: o The entry point pythag i...

Once upon a time Monty said: >id3v2 will not be a part of Vorbis. Ogg bistreams allow mixing streams of any >type, and there will be an XML stream type defined for metadata. This is a >better solution than id3 in just about every technical sense. The Ogg >bitstream code to support this already exists. Can you please elaborate? Is this functionality complete? The only mention to

The following behaviour (in R 0.62.3) is disturbing: > (0+0i)^2 [1] NaN+NaNi Is it deliberate?? Laimonis Kavalieris -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To:

The following behaviour (in R 0.62.3) is disturbing: > (0+0i)^2 [1] NaN+NaNi Is it deliberate?? Laimonis Kavalieris -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To:

In a bug report from Nov.28 2000, Li Dongfeng writes: ----- I have found that the polyroot() function in R-1.1.1(both solaris and Win32 version) gives totally incorrect result. Here is the offending code: # Polyroot bug report: # from R-1.1.1 > sort(abs(polyroot(c(1,-2,1,0,0,0,0,0,0,0,0,0,-2,5,-2,0,0,0,0,0,0,0,0,0,1,-2)))) [1] 0.8758259 0.9486499 0.9731015 1.5419189 1.7466214 1.7535362

...ython2.7.a(posixmodule.o): In function `posix_forkpty':/usr/src/Python-2.7.3/./Modules/posixmodule.c:3816: undefined reference to `forkpty'/opt/python2/lib/libpython2.7.a(complexobject.o): In function `_Py_c_pow':/usr/src/Python-2.7.3/Objects/complexobject.c:139: undefined reference to `hypot'/usr/src/Python-2.7.3/Objects/complexobject.c:140: undefined reference to `pow'/usr/src/Python-2.7.3/Objects/complexobject.c:141: undefined reference to `atan2'/usr/src/Python-2.7.3/Objects/complexobject.c:143: undefined reference to `sincos'/usr/src/Python-2.7.3/Objects/complexobje...

...l/lib/libRmath.so: undefined reference to `log10' /usr/local/lib/libRmath.so: undefined reference to `exp' /usr/local/lib/libRmath.so: undefined reference to `tan' /usr/local/lib/libRmath.so: undefined reference to `log1p' /usr/local/lib/libRmath.so: undefined reference to `hypot' collect2: ld returned 1 exit status

Dear R users, I have two coloumns of data, say x and y, referring to a list of points in 2D space. I am trying to develop a code that will give me the distances (using Pythagoras) between consecutive points (xi,yi) and (xi+1,yi+1). So far I have come up with the following: for (i in 1:length(x)) d<-sqrt((x[i+1]-x[i])^2+(y[i+1]-y[i])^2) For example, if I use the two points (note, I have

.../usr/local/lib/libRmath.so: undefined reference to `log10' /usr/local/lib/libRmath.so: undefined reference to `exp' /usr/local/lib/libRmath.so: undefined reference to `tan' /usr/local/lib/libRmath.so: undefined reference to `log1p' /usr/local/lib/libRmath.so: undefined reference to `hypot' collect2: ld returned 1 exit status

...of my code (the line number in brackets) (216) dyPixel = loc_mat[k][l] / 16; (217) dxPixel = loc_mat[k][l] - 16 * dyPixel; (218) ynb = k + (dyPixel - 8) / 8.; (219) xnb = l + (dxPixel - 8) / 8.; (220) fprintf(stderr, "%i %i %f %f\n", dyPixel, dxPixel, ynb, xnb); (221) linkLength = hypot(xnb-x, ynb-x); and the corresponding output of gdb, using `n' - note that a) the linenumbers show up in the sequence 216, 217, 218, 216, 217, 218, 219, 218, 219, 220, 221 and b) that the values of `xnb' and `ynb' in the end do not correspond with those shown by fprintf in the second la...

...erence to `sinh' /usr/local/libRmath.so: undefined reference to `log10' /usr/local/libRmath.so: undefined reference to `exp' /usr/local/libRmath.so: undefined reference to `tan' /usr/local/libRmath.so: undefined reference to `atan' /usr/local/libRmath.so: undefined reference to `hypot' collect2: ld returned 1 exit status Which is the problem now ? I did produce libRmath.so and then I did copy it in /usr/local. I did add the path /usr/local in /etc/ls.so.conf, then I did run ldconfig as follows ./sbin/ldconfig -n /usr/local 2) Second question Where can I find documentati...

...C-LEVEL FACILITIES: ? Because they use a C99 interface which a C++ compiler is not required to support, Rvprintf and REvprintf are only defined by R_ext/Print.h in C++ code if the macro R_USE_C99_IN_CXX is defined when it is included. ? pythag duplicated the C99 function hypot. It is no longer provided, but is used as a substitute for hypot in the very unlikely event that the latter is not available. ? R_inspect(obj) and R_inspect3(obj, deep, pvec) are (hidden) C-level entry points to the internal inspect function and can be used for C-level...

...C-LEVEL FACILITIES: ? Because they use a C99 interface which a C++ compiler is not required to support, Rvprintf and REvprintf are only defined by R_ext/Print.h in C++ code if the macro R_USE_C99_IN_CXX is defined when it is included. ? pythag duplicated the C99 function hypot. It is no longer provided, but is used as a substitute for hypot in the very unlikely event that the latter is not available. ? R_inspect(obj) and R_inspect3(obj, deep, pvec) are (hidden) C-level entry points to the internal inspect function and can be used for C-level...

....h locale.h \ netdb.h netinet/in.h \ pwd.h readline/history.h readline/readline.h strings.h \ sys/param.h sys/select.h sys/socket.h sys/stat.h sys/time.h \ @@ -1161,13 +1161,17 @@ AC_FUNC_ALLOCA AC_CHECK_FUNCS(access chdir expm1 fcntl finite ftruncate getcwd \ getgrgid getpwuid getuid hypot isascii isnan log1p matherr mkfifo \ - nl_langinfo popen putenv rint setenv strcoll stat strptime symlink \ + popen putenv rint setenv strcoll stat strptime symlink \ system times unsetenv) ## <NOTE> ## No need checking for bcopy bzero memcpy mempcpy even though ifnames ## might repor...

...static inline +#elif _WIN32 +#define STIN static __inline +#else +#define STIN static +#endif + #ifndef M_PI #define M_PI (3.1415926536f) #endif -#ifndef __GNUC__ + #ifdef _WIN32 # include <malloc.h> # define rint(x) (floor((x)+0.5f)) +# define NO_FLOAT_MATH_LIB +# define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b)) #endif -#define STIN static -#else -#define STIN static inline +#ifdef DARWIN +#define NO_FLOAT_MATH_LIB +#endif + +#ifndef NO_FLOAT_MATH_LIB #define sqrt sqrtf #define log logf #define exp expf @@ -48,9 +60,7 @@ #endif -#ifdef _WIN32 -# define FAST_HYPOT(a...

...(it was unintentionally removed along with nroff-based conversion to text). o \deqn{} fix in R-exts.texi, PR#523. o Linpack.h now makes clear which routines are actually in R. o Entry-point "pythag" is now loaded even though it is not necessarily used in R. Where "hypot" is available pythag just calls hypot after checking for special values. o call_R will now correctly handle character vector arguments. o The alphabet links on top of HTML function indices with more than 100 entries now contain only the letters which are really first letters of...

...(it was unintentionally removed along with nroff-based conversion to text). o \deqn{} fix in R-exts.texi, PR#523. o Linpack.h now makes clear which routines are actually in R. o Entry-point "pythag" is now loaded even though it is not necessarily used in R. Where "hypot" is available pythag just calls hypot after checking for special values. o call_R will now correctly handle character vector arguments. o The alphabet links on top of HTML function indices with more than 100 entries now contain only the letters which are really first letters of...

...rther along but I get several undefiined references that appear to be math functions and it errors out at this: lib/libvorbis.a(lpc.o)(.text+0x46e): more undefined references to `pow' follow lib/libvorbis.a(lpc.o): In function `_vlpc_de_helper': lpc.o(.text+0x762): undefined reference to `hypot' collect2: ld returned 1 exit status make[1]: *** [vorbize] Error 1 make[1]: Leaving directory `/usr/src/vorbize-0.1' make: *** [all] Error 2 Could anyone tell me what I'm doing wrong ? Thanks Karl --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project ho...

...;::fminl' has not been declared inline _LIBCPP_INLINE_VISIBILITY long double fmin(long double __lcpp_x, long double __lcpp_y) _NOEXCEPT {return ::fminl(__lcpp_x, __lcpp_y);} ^~ ../projects/libcxx/include/math.h: In function 'long double hypot(long double, long double)': ../projects/libcxx/include/math.h:1233:114: error: '::hypotl' has not been declared inline _LIBCPP_INLINE_VISIBILITY long double hypot(long double __lcpp_x, long double __lcpp_y) _NOEXCEPT {return ::hypotl(__lcpp_x, __lcpp_y);}...