subMatrix

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/Data/Packed/Internal/aux.h b/lib/Data/Packed/Internal/aux.h
index f45b55a..59d90db 100644
--- a/lib/Data/Packed/Internal/aux.h
+++ b/lib/Data/Packed/Internal/aux.h
@@ -19,3 +19,5 @@ int constantC(gsl_complex *val, CVEC(r));
 
 int multiplyR(int ta, KRMAT(a), int tb,  KRMAT(b),RMAT(r));
 int multiplyC(int ta, KCMAT(a), int tb, KCMAT(b),CMAT(r));
+
+int submatrixR(int r1, int r2, int c1, int c2, KRMAT(x),RMAT(r));