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jiri 2006-09-19 16:09:26 +00:00
parent 6d7b245653
commit f4d3ad691e
1 changed files with 4 additions and 3 deletions
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7
matexp.h
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@ -251,8 +251,9 @@ return r;
//and probably not efficient either //and probably not efficient either
template<class M, class V> template<class M, class V>
void exptimesdestructive(const M &mat, V &result, V &rhs, bool transpose=false, const double scale=1., int maxpower= -1, int maxtaylor= -1) //uses just matrix vector multiplication void exptimesdestructive(const M &mat, V &result, V &rhs, bool transpose=false, const double scale=1., int maxpower= -1, int maxtaylor= -1, bool mat_is_0=false) //uses just matrix vector multiplication
{ {
if(mat_is_0) {result=rhs; return;}
if(mat.nrows()!=mat.ncols()||(unsigned int) mat.nrows() != (unsigned int)rhs.size()) laerror("inappropriate sizes in exptimes"); if(mat.nrows()!=mat.ncols()||(unsigned int) mat.nrows() != (unsigned int)rhs.size()) laerror("inappropriate sizes in exptimes");
int power; int power;
@ -280,10 +281,10 @@ return;
template<class M, class V> template<class M, class V>
const V exptimes(const M &mat, V rhs, bool transpose=false, const double scale=1., int maxpower= -1, int maxtaylor= -1 ) const V exptimes(const M &mat, V rhs, bool transpose=false, const double scale=1., int maxpower= -1, int maxtaylor= -1, bool mat_is_0=false )
{ {
V result; V result;
exptimesdestructive(mat,result,rhs,transpose,scale,maxpower,maxtaylor); exptimesdestructive(mat,result,rhs,transpose,scale,maxpower,maxtaylor,mat_is_0);
return result; return result;
} }