clone input densemat to GEMM if it is equal to the result. this fixes #131 but has to be tested (easiest by the PHIST unit tests)
clone input densemat to GEMM if it is equal to the result. this fixes #131 but has to be tested (easiest by the PHIST unit tests)

RRZE-HPC/GHOST,RRZE-HPC/GHOST,RRZE-HPC/GHOST,RRZE-HPC/GHOST