Created
August 8, 2012 17:22
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namespace dspsv_func{ | |
const int PRINT_DEBUG_STUFF = 0; | |
function dspsv_exec(var A,var b,int uplo) | |
{ | |
var pla = loadlib("linalg_group"); | |
var lapack = loadlib('liblapack.so'); | |
if (lapack == null || !lapack) | |
die("Cannot find liblapack. Search for the correct paths"); | |
int m,n,nrhs,ldb,info; | |
m=A.rows; | |
n=A.cols; | |
nrhs=b.cols; | |
int ipiv[n]; | |
int j; | |
for(j=0;j<n;++j) | |
ipiv[j]=0; | |
ldb=max(1,n); | |
say(b); | |
var AP; | |
AP=create_ap(A,uplo); | |
say(AP); | |
var dspsv = dlfunc(lapack, "dspsv_", "vpppppppp"); | |
if(dspsv == null || !dspsv) | |
die("Not DSPSV"); | |
dspsv(uplo,n,nrhs,AP,ipiv,b,ldb,info); | |
if(info==0) | |
return AP; | |
} | |
function create_ap(var A,var uplo) | |
{ | |
int m,n; | |
m=A.rows; | |
n=A.cols; | |
var pla = loadlib("linalg_group"); | |
int ap_size; | |
ap_size=((n*(n+1))/2); | |
var ap=new 'NumMatrix2D'; | |
ap.resize(1,ap_size); | |
int i,j; | |
if(uplo == 85) | |
{ | |
for(i=1;i<=m;++i) | |
for(j=1;j<=n;++j) | |
ap[(i + (j-1)*j/2)-1] = A[i-1,j-1]; | |
} | |
else if(uplo == 76) | |
{ | |
for(i=1;i<=m;++i) | |
for(j=1;j<=n;++j) | |
ap[(i + (j-1)*((2*n)-j)/2)-1] = A[i-1,j-1]; | |
} | |
else | |
{ | |
die("invalid input"); | |
} | |
return ap; | |
} | |
function max(var a,var b) | |
{ | |
return a>b?a:b; | |
} | |
function debug(var matrix, string msg, var args [slurpy]) | |
{ | |
if (PRINT_DEBUG_STUFF) { | |
say(sprintf(msg, args)); | |
say(matrix); | |
} | |
} | |
} | |
function main[main](var args) | |
{ | |
var pla = loadlib("linalg_group"); | |
var a = new 'NumMatrix2D'; | |
var b=new 'NumMatrix2D'; | |
var ap=new 'NumMatrix2D'; | |
int uplo; | |
uplo=55; | |
a.initialize_from_args(3, 3, | |
1.0, 0.0, 0.0, | |
0.0, 1.0, 0.0, | |
0.0, 0.0, 1.0); | |
b.initialize_from_args(3, 1, | |
1.0, | |
2.0, | |
3.0); | |
using dspsv_func.dspsv_exec; | |
ap=dspsv_exec(a,b,uplo); | |
say("successful"); | |
say("AP="); | |
say(ap); | |
say("B="); | |
say(b); | |
} |
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