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NRVec::prepend implemented

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This commit is contained in:
Jiri Pittner 2023-03-17 16:04:41 +01:00
parent 8e9a8a999b
commit 2922330c80
2 changed files with 38 additions and 10 deletions
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5
t.cc
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@ -2574,12 +2574,13 @@ cout <<test;
cout <<"Error = "<<(expitszsz-test).norm()<<endl;
}
if(0)
if(1)
{
NRVec<double> x({1,2,3});
NRVec<double> y({4,5,6});
//cout <<x.concat(y);
x.append(10.);
x.prepend(11.);
cout <<x;
x.concatme(y);
cout <<x;
@ -2724,7 +2725,7 @@ NRMat<std::complex<double> > uubartest2c = NRMat<std::complex<double> >(ainv) *
cout <<"nonpseudounitarity of explicit uubar = "<<uubartest2c.norm(1.)<<endl;
}
if(1)
if(0)
{
laerror("test exception");
}

31
vec.h
View File

@ -273,6 +273,15 @@ public:
v[nnold] = a;
}
void prepend(const T &a) //not efficient if done repeatedly
{
NOT_GPU(*this);
int nnold=nn;
resize(nn+1,true,true);
v[0] = a;
}
//! determine the actual value of the reference counter
inline int getcount() const {return count?*count:0;}
@ -375,7 +384,7 @@ public:
inline int size() const;
//! resize the current vector, optionally preserving data
void resize(const int n, const bool preserve=false);
void resize(const int n, const bool preserve=false, const bool preserve_at_end=false);
//!deallocate the current vector
void dealloc(void) {resize(0);}
@ -1158,7 +1167,7 @@ NRVec<T> & NRVec<T>::operator=(const NRVec<T> &rhs) {
* @param[in] n requested size
******************************************************************************/
template <typename T>
void NRVec<T>::resize(const int n, const bool preserve)
void NRVec<T>::resize(const int n, const bool preserve, const bool preserve_at_end)
{
#ifdef DEBUG
if(n < 0) laerror("illegal dimension in NRVec::resize");
@ -1254,18 +1263,36 @@ if(nn<nnmin) nnmin=nn;
if(location == cpu)
{
#endif
if(preserve_at_end)
{
for(int i=0; i<nnmin; ++i) v[nn-i-1]=vold[nnold-i-1]; //preserve even non-plain data classes
if(nn>nnold) memset(v,0,(nn-nnold)*sizeof(T)); //just zero the new memory
}
else
{
for(int i=0; i<nnmin; ++i) v[i]=vold[i]; //preserve even non-plain data classes
if(nn>nnold) memset(v+nnold,0,(nn-nnold)*sizeof(T)); //just zero the new memory
}
if(do_delete) delete[] vold;
#ifdef CUDALA
}
else
{
//!!!works only with plain data
if(preserve_at_end)
{
cublasSetVector(nnmin, sizeof(T), vold+nnold-nnmin, 1, v+nn-nnmin, 1);
TEST_CUBLAS("cublasSetVector");
T a(0);
if(nn>nnold) smart_gpu_set(nn-nnold, a, v);
}
else
{
cublasSetVector(nnmin, sizeof(T), vold, 1, v, 1);
TEST_CUBLAS("cublasSetVector");
T a(0);
if(nn>nnold) smart_gpu_set(nn-nnold, a, v+nnold);
}
if(do_delete) gpufree(vold);
}
#endif