Displaying 3 results from an estimated 3 matches for "umach".
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mach
2004 Aug 19
3
More precision problems in testing with Intel compilers
The Intel compiled version also fails the below test:
> ###------------ Very big and very small
> umach <- unlist(.Machine)[paste("double.x", c("min","max"), sep='')]
> xmin <- umach[1]
> xmax <- umach[2]
> tx <- unique(outer(-1:1,c(.1,1e-3,1e-7)))# 7 values (out of 9)
> tx <- unique(sort(c(outer(umach,1+tx))))# 11 values (out of 14)...
1997 May 27
1
R-alpha: signif( small , d) gives NA
signif(.) is a <primitive> function.
Unfortunately, I couldn't even find WHERE in the source,
signif(.) is defined.
Here are the symptoms:
xmin <- .Machine $ double.xmin
signif(xmin,3) #--> NA
umach <- unlist(.Machine)[paste("double.x", c("min","max"), sep='')]
for(dig in 1:10) {cat("dig=",dig,": "); print(signif(umach, digits = dig))}
-------
Why do I "complain"?
-- it breaks str(.Machine), now that I've improved...
1997 Sep 12
2
R-alpha: bug in passing of empty (...)
This is too bad (and an old bug at least since 0.49);
it also breaks some code I have been using in S-plus:
> tst <- function(...) ls(...)
> tst()#--- should really give the same as ls() !!
character(0)
> ls()
[1] "%in%" "As.integer" "Dir"
[4] "Dir0" "Fn12"