First attempt at single precision tyeps * * * corrections to qrupdate single precision routines * * * prefer demotion to single over promotion to double * * * Add single precision support to log2 function * * * Trivial PROJECT file update * * * Cache optimized hermitian/transpose methods * * * Add tests for tranpose/hermitian and ChangeLog entry for new transpose code

--- a/src/utils.h
+++ b/src/utils.h
@@ -93,6 +93,9 @@
 extern OCTINTERP_API Matrix
 identity_matrix (octave_idx_type nr, octave_idx_type nc);
 
+extern OCTINTERP_API FloatMatrix
+float_identity_matrix (octave_idx_type nr, octave_idx_type nc);
+
 extern OCTINTERP_API int
 octave_format (std::ostream& os, const char *fmt, ...);