Displaying 20 results from an estimated 48 matches for "hypot".
2000 May 22
2
hypot(x,y) instead of pythag(a,b) ?!
...)' 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...
2011 Mar 19
1
Undefined symbol "Rf_pythag" while loading spatstat
...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...
2000 Apr 28
2
Metadata followup
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
1998 Sep 16
2
R-beta: (0+0i)^2
The following behaviour (in R 0.62.3) is disturbing:
> (0+0i)^2
[1] NaN+NaNi
Is it deliberate??
Laimonis Kavalieris
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1998 Sep 16
2
R-beta: (0+0i)^2
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:
2001 Jul 16
1
polyroot() (PR#751)
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
2012 Dec 21
1
Problem compiling Samba4, Python installed in nonstandard location
...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...
2005 Aug 11
1
include C functions from nmath in my own C functions
...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
2011 Feb 16
2
distance between consecutive points
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
2005 Aug 11
1
include C functions from nmath in my own C functions
.../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
2000 Oct 02
4
Debugging dynloaded C-code with gdb
...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...
2002 May 31
1
Two questions about nmath
...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...
2011 Apr 13
0
R 2.13.0 is released
...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...
2011 Apr 13
0
R 2.13.0 is released
...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...
2004 Apr 18
0
[patch] R-1.9.0: compile error without nl_langinfo(CODESET) (PR#6789)
....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...
2001 Jan 29
1
Mac OS X/Darwin patch for libvorbis
...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...
2000 Jun 15
4
R-1.1.0 is released
...(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...
2000 Jun 15
4
R-1.1.0 is released
...(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...
2000 Jun 12
5
Compile Problems
...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...
2018 Feb 06
2
libc++ cross-compile linux-armv7 and math function problems
...;::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);}...