Displaying 6 results from an estimated 6 matches for "61224".
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1224
2018 May 09
3
NAs produced by integer overflow, but only some time ...
I have problem with integer overflow that I cannot understand.
I have a character vector curr.lemmas with the following properties:
length(curr.lemmas) # 61224
length(unique(curr.lemmas)) # 2652
That vector is the input to the following function:
yules.k1 <- function(input) {
m1 <- length(input); temp <- table(table(input))
m2 <- sum("*"(temp, as.numeric(names(temp))^2))
return(10000*(m2-m1) / (m1*m1))
}
When I run this,...
2018 May 09
0
NAs produced by integer overflow, but only some time ...
a) Numeric values may be either integers (signed 32 bit) or double precision (53 bit mantissa).
b) Double precision constants are numeric with no decoration (e.g. 61224). Integer constants have an L (e.g. 61224L).
c) 61224*61224 > 2^31-1 so that answer cannot fit into an integer.
d) Exponentiation is a floating point operation so the result of 61224L^2L is a floating point answer that CAN fit into the 53bit mantissa of a double precision value, so no overflow...
2018 May 09
1
NAs produced by integer overflow, but only some time ...
...tware
wdunlap tibco.com
On Wed, May 9, 2018 at 12:04 AM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:
> a) Numeric values may be either integers (signed 32 bit) or double
> precision (53 bit mantissa).
>
> b) Double precision constants are numeric with no decoration (e.g. 61224).
> Integer constants have an L (e.g. 61224L).
>
> c) 61224*61224 > 2^31-1 so that answer cannot fit into an integer.
>
> d) Exponentiation is a floating point operation so the result of 61224L^2L
> is a floating point answer that CAN fit into the 53bit mantissa of a double
>...
2018 May 09
2
NAs produced by integer overflow, but only some time ...
...stion: Why
does a function using m1*m1 produce an integer overflow, but m1^2 does
not?
As for Jeff's 'response':
> a) Numeric values may be either integers (signed 32 bit) or double precision (53 bit mantissa).
> b) Double precision constants are numeric with no decoration (e.g. 61224). Integer constants have an L (e.g. 61224L).
> c) 61224*61224 > 2^31-1 so that answer cannot fit into an integer.
> d) Exponentiation is a floating point operation so the result of 61224L^2L is a floating point answer that CAN fit into the 53bit mantissa of a double precision value, so no...
2009 Mar 20
12
[Bug 20780] New: nouveau corrupts and crashes on 7800gt when NoAccel= false after a few drawing operations
...uveau
binfmt_misc 14476 1
bridge 59424 0
stp 7300 1 bridge
bnep 18944 2
vmnet 50052 13
ppdev 12872 0
parport_pc 40936 0
vmblock 19664 3
vmci 61224 0
vmmon 81040 0
input_polldev 8848 0
video 25108 0
output 7808 1 video
lp 15620 0
parport 45744 3 ppdev,parport_pc,lp
mt2131 10500 1
s5h1409 14404 1
snd_hda...
2006 Dec 19
1
Sloooooow pop3 downloads
...vents=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=18,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=29,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=20,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=16,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}], 17, 99) = 0
14:18:09.461224 gettimeofday({1165868289, 461251}, {360, 0}) = 0
14:18:09.461351 gettimeofday({1165868289, 461381}, NULL) = 0
14:18:09.461479 poll([{fd=10,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=15,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=13,
events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLN...