diff options
Diffstat (limited to 'Carpet/CarpetLib/src/vect.hh')
| -rw-r--r-- | Carpet/CarpetLib/src/vect.hh | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/Carpet/CarpetLib/src/vect.hh b/Carpet/CarpetLib/src/vect.hh index c5887bfaf..d39327130 100644 --- a/Carpet/CarpetLib/src/vect.hh +++ b/Carpet/CarpetLib/src/vect.hh @@ -456,18 +456,36 @@ inline int size (const vect<T,D>& a) /** Return the first element. */ template<typename T,int D> -inline int first (const vect<T,D>& a) +inline T head (const vect<T,D>& a) { return a[0]; } +/** Return all but the first element. */ +template<typename T,int D> +inline vect<T,D-1> tail (const vect<T,D>& a) +{ + vect<T,D-1> r; + for (int d=0; d<D-1; ++d) r[d]=a[d+1]; + return r; +} + /** Return the last element. */ template<typename T,int D> -inline int last (const vect<T,D>& a) +inline T last (const vect<T,D>& a) { return a[D-1]; } +/** Return all but the last element. */ +template<typename T,int D> +inline vect<T,D-1> init (const vect<T,D>& a) +{ + vect<T,D-1> r; + for (int d=0; d<D-1; ++d) r[d]=a[d]; + return r; +} + /** Return the index of the first maximum element. */ template<typename T,int D> inline int maxloc (const vect<T,D>& a) |