Displaying 4 results from an estimated 4 matches for "bexp".
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2006 Oct 31
1
Compiling R packages on Ubuntu
...(BcorStruct.c:60: warning: implicit declaration of function $(B!F(Bmemcpy$(B!G
(BcorStruct.c:60: warning: incompatible implicit declaration of built-in function $(B!F(Bmemcpy$(B!G
(BcorStruct.c: In function $(B!F(Bsymm_fullCorr$(B!G(B:
corStruct.c:93: warning: implicit declaration of function $(B!F(Bexp$(B!G
(BcorStruct.c:93: warning: incompatible implicit declaration of built-in function $(B!F(Bexp$(B!G
(BcorStruct.c:95: warning: implicit declaration of function $(B!F(Bcos$(B!G
(BcorStruct.c:95: warning: incompatible implicit declaration of built-in function $(B!F(Bcos$(B!G
(BcorStruct.c:96: warn...
2008 Jun 03
1
nlm behaviour and error
Hi R-Gurus,
I've been cutting along quite nicely with nlm, until
I threw in the following condition in the function that nlm is
minimising:
if (((term*bexp) < 0.0001)) {
#warning(term*bexp, "=term*bexp",psi,"=psi")
theta<-2000
}
Now when I run this function anywhere else, there is no problem, whether
or the if's condition is met.
When I use this in nlm:
nlm(f=ssewrap.dist, p=c(292397.7,-.14053,0.03...
2008 Sep 16
0
FW: odesolve dynload example
...small numbers/large (using Brobdingnag):
surfacewithdiff <- function(t, y, p)
{
const=p["const"]
kay =p["kay"]
psii=p["psii"]
m1=p["m1"]
m2=p["m2"]
M=p["M"]
N=p["N"]
T=p["T"]
bexp<-as.brob((const*(psii-m1*y[1]-m2*M/N))/T)
yd1<-as.numeric((kay*exp(bexp))/(kay*t*exp(bexp)+1)-
(kay^2*t*exp(2*bexp))/(kay*t*exp(bexp)+1)^2)
list(c(yd1))
}
Now I guess this could be done with gmp.
Now I use this stuff in the function that odesolve's lsoda refers to,...
2008 Sep 16
0
lsoda( linking to GMP for big numbers from C code)
...small/large numbers (using Brobdingnag):
surfacewithdiff <- function(t, y, p)
{
const=p["const"]
kay =p["kay"]
psii=p["psii"]
m1=p["m1"]
m2=p["m2"]
M=p["M"]
N=p["N"]
T=p["T"]
bexp<-as.brob((const*(psii-m1*y[1]-m2*M/N))/T)
yd1<-as.numeric((kay*exp(bexp))/(kay*t*exp(bexp)+1)-
(kay^2*t*exp(2*bexp))/(kay*t*exp(bexp)+1)^2)
list(c(yd1))
}
Now I guess this could be done with gmp.
Now I use this stuff in the function that odesolve's lsoda refers to,...