search for: do_matprod

I would like to see how the matrix multiplication operator %*% is implemented (because I want to see which external Fortran/C routines are used). How can I do so? Best S??ren

...e non-conformable arguments error message --- src/main/array.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/src/main/array.c b/src/main/array.c index 4b95e33..cedf627 100644 --- a/src/main/array.c +++ b/src/main/array.c @@ -1350,15 +1350,18 @@ SEXP attribute_hidden do_matprod(SEXP call, SEXP op, SEXP args, SEXP rho) if (PRIMVAL(op) == 0) { /* primitive, so use call */ if (ncx != nry) - errorcall(call, _("non-conformable arguments")); + errorcall(call, _("non-conformable arguments of dimension (%d, %d) and (%d, %d)"), + nrx, ncx, n...

...e > >--- > src/main/array.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > >diff --git a/src/main/array.c b/src/main/array.c >index 4b95e33..cedf627 100644 >--- a/src/main/array.c >+++ b/src/main/array.c >@@ -1350,15 +1350,18 @@ SEXP attribute_hidden do_matprod(SEXP call, SEXP op, SEXP args, SEXP rho) > if (PRIMVAL(op) == 0) { > /* primitive, so use call */ > if (ncx != nry) >- errorcall(call, _("non-conformable arguments")); >+ errorcall(call, _("non-conformable arguments of dimension (%d, %d) and (%d, %d)")...

Full_Name: J . R. M. Hosking Version: 1.8.0 OS: Windows 2000 Submission from: (NULL) (129.34.20.23) On R 1.8.0 (and on R 1.5.1), Windows binary: > NA %*% 0 [,1] [1,] 0 This is surprising. Is it a bug? Note that > 0 %*% NA [,1] [1,] NA > NA %*% 1 [,1] [1,] NA > NA * 0 [1] NA as expected.

After I upgraded my installation of R for OS X (Tiger) to 1.12, it consistently crashes when calling the function acf() [stats lib]. Roberto Osorio