Displaying 20 results from an estimated 2000 matches similar to: "IEEE_754 logic"
2001 Mar 16
1
Catching error messages (from nls(), e.g.)
I try to fit subsequentially different nonlinear models to data.
Up to now I tried a first model and if I could not fit this one
proceeded to another one.
Now I would like to handle this automatically. But much to my
chagrin I did not find a way for dealing with the error messages
from nls(), e.g. getting them as "control information" or at least
just returning from nls() without a
2000 Sep 15
3
R on HP-UX, again: modreg.sl fails, 1 arith test fails
I want to report the progress of my attempts to get R running on HP-UX
with gcc:
Firstly, I could work around the PIC problem by leaving out all the lib stuff
(I rebuilt gcc with --enable-share, but this (alone) did not help), e.g. the
line
gcc -shared -fPIC -o ctest.sl ansari.o fexact.o kendall.o ks.o prho.o swilk.o -L/usr/local/lib -lg2c
-lm -L/lib/pa1.1 -L/usr/lib/pa1.1 -u main
2008 Apr 11
4
Object.isNumber() returns true on NaN??
Hi,
Object.isNumber() returns true on NaN. I don''t think that''s true....
NaN is Not a Number so it''s not a number... right?
By the way, I''m using Prototype 1.6.0.2.
Satoru
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2000 Oct 11
5
"Executing" a string
In Matlab or Octave I can evaluate (evalf) the content of
a string. In R I have looked around in the docs, but have not
found a way to do something equivalent (which is possible, I think).
Can anybody give me a pointer?
=============================================================================
Thomas Hoffmann, Institut fuer Halbleiter- und Mikrosystemtechnik, TU Dresden
E-mail: hoffmann at
1999 Oct 25
1
gc_inhibit_torture definition twice?
I have a problem to understand the way gc_inhibit_torture is defined.
In include/Defn.h it is declared as extern, using the __MAIN__ trick this leads to
a definition in main/main.c.
But in main/memory.c you define (and initialize) gc_inhibit_torture again:
int gc_inhibit_torture = 1; /* gets set to zero after initialisations */
Then, in e.g. unix/system.c immediately at the beginning of
2005 Jan 05
1
Standalone Mathlib, C++ and ISNAN()
In the hope of some meaningful response and ignoring the risk of
further abuse, let me try to clarify the issue here.
I have re-read the 'Writing R Extensions' manual. It seems to me that
it clearly says R API functions can be called from from C++ programs,
and the API includes the special values ISNAN() and R_FINITE() and the
missing test ISNA().
R_FINITE is no problem. It is
2001 Apr 09
1
Support for compartment models / matrix exponential method
I try to fit reaction kinetic data to a given hypothetical model
consisting of 3 ODEs. After some reading in Bates/Watts and the literature
cited there (e.g. Jennrich/Bright) I looked in R for functions that support
the use of the matrix exponential method. Until now I used for a similar
(but simpler) problem the nls package and fitted against the the parameterized
solution function. But this
2000 Oct 04
5
postscript preview
gday R friends,
I was wondering if anyone could help me with some graphics issues please.
I'm processing R in batch on redhat6.2 with some graphics to be imported
into msword on NT. For scaling within my doco I want some vector type
graphics. win.metafile doesn't seem to be supported on redhat which gives
me postscript. postscript is ideal but doesn't contain a preview so I
2000 Oct 12
1
Accumulating data row by row into a data frame
After the overwhelming response to my last question (many thanks!),
I cannot resist to ask the next maybe trivial question:
All sources I have looked into tell me about building data frames
by reading from files or by putting vectors of data ("column by column")
together.
Now I would like to create an (empty) data frame with "headings" for
every column (column titles) and then
2003 Dec 30
1
Accuracy: Correct sums in rowSums(), colSums() (PR#6196)
Full_Name: Nick Efthymiou
Version: R1.5.0 and above
OS: Red Hat Linux
Submission from: (NULL) (162.93.14.73)
With the introduction of the functions rowSums(), colSums(), rowMeans() and
colMeans() in R1.5.0, function "SEXP do_colsum(SEXP call, SEXP op, SEXP args,
SEXP rho)" was added to perform the fast summations. We have an excellent
opportunity to improve the accuracy by
2005 Jan 04
2
ISNAN() broken? in ver 2.x on MacOS X
I have a problem building an extension using ISNAN() on R version 2.0.x.
In R 1.9.1 Arith.h and Rmath.h contained code like
#ifdef IEEE_754
# define ISNAN(x) (isnan(x)!=0)
#else
# define ISNAN(x) R_IsNaNorNA(x)
#endif
#define R_FINITE(x) R_finite(x)
int R_IsNaNorNA(double);
int R_finite(double);
which works.
R 2.0.x has
# define ISNAN(x) (isnan(x)!=0)
unconditionally.
This breaks
2005 Jan 04
2
ISNAN() broken? in ver 2.x on MacOS X
I have a problem building an extension using ISNAN() on R version 2.0.x.
In R 1.9.1 Arith.h and Rmath.h contained code like
#ifdef IEEE_754
# define ISNAN(x) (isnan(x)!=0)
#else
# define ISNAN(x) R_IsNaNorNA(x)
#endif
#define R_FINITE(x) R_finite(x)
int R_IsNaNorNA(double);
int R_finite(double);
which works.
R 2.0.x has
# define ISNAN(x) (isnan(x)!=0)
unconditionally.
This breaks
2018 May 01
3
Compiling CUDA with clang on Windows
Dear all,
In the official document <https://llvm.org/docs/CompileCudaWithLLVM.html>,
it is mentioned that CUDA compilation is supported on Windows as of
2017-01-05. I used msys2 to install clang 5.0.1. Then I installed cuda 8.0.
However, I basically could not compile any code of cuda by the prescribed
setting. I wounder if anyone can successfully compile cuda code by the
clang on Windows.
1999 Sep 13
5
axis() produces junk on DEC alpha (PR#274)
Full_Name: Albrecht Gebhardt
Version: 0.65.0
OS: Digital Unix 4.0E
Submission from: (NULL) (212.17.104.62)
Plottimg on the Alpha stopped working with 0.65.0.
The tickmarks have a length of -Inf and go across the whole
plot.
A first solution is the following patch:
--- src/main/plot.c.alpha-patch Mon Sep 13 01:37:11 1999
+++ src/main/plot.c Mon Sep 13 01:58:16 1999
@@ -832,7 +832,7 @@
2016 Mar 14
2
LLVM-3.8.0 libcxx in-tree build fails with cmath error ::signbit has not been declared
cmake -E cmake_progress_report llvm-3.8.0.src_bld_x86_64-rhel6.4-linux-gnu/CMakeFiles
In file included from llvm-3.8.0.src/projects/libcxx/include/__hash_table:19:0,
from llvm-3.8.0.src/projects/libcxx/src/hash.cpp:10:
llvm-3.8.0.src/projects/libcxx/include/cmath:310:9: error: '::signbit' has not been declared
using ::signbit;
^
2007 May 31
0
Branch 'as' - 8 commits - libswfdec/swfdec_as_context.c libswfdec/swfdec_as_interpret.c libswfdec/swfdec_as_string.c libswfdec/swfdec_as_strings.c libswfdec/swfdec_as_types.c test/trace
libswfdec/swfdec_as_context.c | 20 +
libswfdec/swfdec_as_interpret.c | 9
libswfdec/swfdec_as_string.c | 15 -
libswfdec/swfdec_as_strings.c | 2
libswfdec/swfdec_as_types.c | 2
test/trace/Makefile.am | 28 +
test/trace/isnan-5.swf |binary
2001 Mar 30
5
PICT output?
hi, all. I use R on a unix (linux) box and am quite happy with it.
However, sometimes I need to create a graph that needs to be used with
Microsoft Word or Powerpoint (ug). I can create a png or jpeg format
picture, but the text look pretty crummy because jpeg is bitmapped. I
can also create a PS/EPS version (my preference), but then it doesn't
display properly in word or powerpoint (but it
2019 Dec 07
2
What should dnorm(0, 0, -Inf) return?
Hi,
Apropos of a recent Inf question, I've previously wondered if dnorm "does the right thing" with
dnorm(0, 0, -Inf)
which gives zero. Should that be zero or NaN (or NA)?
The help says "'sd < 0' is an error and returns 'NaN'" and since -Inf < 0 is TRUE, then... is this a bug?
Thank you,
Stephen
Rochester, MN USA
2005 Apr 02
2
Solaris10/amd64 + SunSutio Compile (PR#7767)
Full_Name: Teru KAMOGASHRIA
Version: 2.0.1
OS: SunOS sun 5.10 Generic i86pc i386 i86pc
Submission from: (NULL) (219.5.176.24)
rbinom.c cannot be compiled because of the casting problem.
/opt/SUNWspro/bin/cc -I. -I../../src/include -I../../src/include
-I/usr/local/include -DHAVE_CONFIG_H -D__NO_MATH_INLINES -g -c rbinom.c -o
rbinom.o
"rbinom.c", line 60: operand must have real
2019 Dec 08
2
What should dnorm(0, 0, -Inf) return?
Yes, that looks like a bug and an easily fixable one too.
However, I spy another issue: Why do we check the !R_FINITE(x) && mu == x before checking for sd < 0 ? The difference is whether we
return ML_NAN;
or
ML_ERR_return_NAN;
but surely negative sd should always be an error?
I'd be inclined to do
if (sigma < 0) ML_ERR_return_NAN;
if(!R_FINITE(sigma)) return R_D__0;