-boun...@r-project.org
[mailto:r-devel-boun...@r-project.org] On Behalf Of Romain Francois
Sent: Wednesday, April 21, 2010 12:32 PM
To: Matthew Dowle
Cc: r-de...@stat.math.ethz.ch
Subject: Re: [Rd] suggestion how to use memcpy in duplicate.c
Le 21/04/10 17:54, Matthew Dowle a écrit :
From
21, 2010 12:32 PM
To: Matthew Dowle
Cc: r-de...@stat.math.ethz.ch
Subject: Re: [Rd] suggestion how to use memcpy in duplicate.c
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s
Software
wdunlap tibco.com
-Original Message-
From: r-devel-boun...@r-project.org
[mailto:r-devel-boun...@r-project.org] On Behalf Of Romain Francois
Sent: Wednesday, April 21, 2010 12:32 PM
To: Matthew Dowle
Cc: r-de...@stat.math.ethz.ch
Subject: Re: [Rd] suggestion how to use memcpy
-devel-boun...@r-project.org] On Behalf Of Romain Francois
Sent: Wednesday, April 21, 2010 12:32 PM
To: Matthew Dowle
Cc: r-de...@stat.math.ethz.ch
Subject: Re: [Rd] suggestion how to use memcpy in duplicate.c
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void
Is this a thumbs up for memcpy for DUPLICATE_ATOMIC_VECTOR at least ?
If there is further specific testing then let me know, happy to help, but
you seem to have beaten me to it.
Matthew
Simon Urbanek simon.urba...@r-project.org wrote in message
how to use memcpy in duplicate.c
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s);
switch (TYPEOF(s)) {
...
case INTSXP:
for (i = 0; i
On Apr 22, 2010, at 7:12 AM, Matthew Dowle wrote:
Is this a thumbs up for memcpy for DUPLICATE_ATOMIC_VECTOR at least ?
If there is further specific testing then let me know, happy to help, but
you seem to have beaten me to it.
I was not volunteering to do anything - I was just
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s);
switch (TYPEOF(s)) {
...
case INTSXP:
for (i = 0; i ns; i++)
INTEGER(s)[i] = INTEGER(t)[i % nt];
break;
...
could that be replaced with :
Matt,
On Apr 21, 2010, at 11:54 AM, Matthew Dowle wrote:
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s);
switch (TYPEOF(s)) {
...
case INTSXP:
for (i = 0; i ns; i++)
INTEGER(s)[i] =
On 4/21/10 10:45 AM, Simon Urbanek wrote:
Won't that miss the last incomplete chunk? (and please don't use
DATAPTR on INTSXP even though the effect is currently the same)
In general it seems that the it depends on nt whether this is
efficient or not since calls to short memcpy are expensive
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s);
switch (TYPEOF(s)) {
...
case INTSXP:
for (i = 0; i ns; i++)
INTEGER(s)[i] = INTEGER(t)[i %
On Apr 21, 2010, at 2:15 PM, Seth Falcon wrote:
On 4/21/10 10:45 AM, Simon Urbanek wrote:
Won't that miss the last incomplete chunk? (and please don't use
DATAPTR on INTSXP even though the effect is currently the same)
In general it seems that the it depends on nt whether this is
On Apr 21, 2010, at 3:32 PM, Romain Francois wrote:
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s);
switch (TYPEOF(s)) {
...
case INTSXP:
for (i =
Le 21/04/10 21:39, Simon Urbanek a écrit :
On Apr 21, 2010, at 3:32 PM, Romain Francois wrote:
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
nt = LENGTH(t);
ns = LENGTH(s);
switch
On Apr 21, 2010, at 4:13 PM, Romain Francois wrote:
Le 21/04/10 21:39, Simon Urbanek a écrit :
On Apr 21, 2010, at 3:32 PM, Romain Francois wrote:
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
void copyVector(SEXP s, SEXP t)
{
int i, ns, nt;
On Apr 21, 2010, at 4:39 PM, Simon Urbanek wrote:
On Apr 21, 2010, at 4:13 PM, Romain Francois wrote:
Le 21/04/10 21:39, Simon Urbanek a écrit :
On Apr 21, 2010, at 3:32 PM, Romain Francois wrote:
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector in duplicate.c :
-project.org
[mailto:r-devel-boun...@r-project.org] On Behalf Of Romain Francois
Sent: Wednesday, April 21, 2010 12:32 PM
To: Matthew Dowle
Cc: r-de...@stat.math.ethz.ch
Subject: Re: [Rd] suggestion how to use memcpy in duplicate.c
Le 21/04/10 17:54, Matthew Dowle a écrit :
From copyVector
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