API: fix printer dtype processing #6700

Job	Run time
pytest-ubuntu-py311-gcc11-noomp-base	33m 11s
pytest-ubuntu-py311-gcc11-noomp-adjoint	28m 31s
pytest-ubuntu-py38-gcc12-omp-base	34m 9s
pytest-ubuntu-py38-gcc12-omp-adjoint	27m 54s
pytest-ubuntu-py38-gcc7-omp-base	32m 9s
pytest-ubuntu-py38-gcc7-omp-adjoint	27m 1s
pytest-ubuntu-py310-gcc10-noomp-base	33m 14s
pytest-ubuntu-py310-gcc10-noomp-adjoint	28m 39s
pytest-ubuntu-py312-gcc13-omp-base	43m 47s
pytest-ubuntu-py312-gcc13-omp-adjoint	36m 25s
pytest-ubuntu-py39-gcc9-omp-base	33m 25s
pytest-ubuntu-py39-gcc9-omp-adjoint	27m 23s
pytest-osx-py312-clang-omp-base	1m 27s
pytest-docker-py39-gcc-omp-base	33m 24s
pytest-docker-py39-gcc-omp-adjoint	25m 30s
pytest-docker-py39-icx-omp-base	28m 11s
pytest-docker-py39-icx-omp-adjoint	25m 43s
	8h 20m 3s

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