inverting function in one 'ordinate_for cycle
inverting function in one 'ordinate_for cycle


Former-commit-id: 2c17e9cf36a2b564382fd74439f015e6f9982fcc [formerly 6c63e1a5cab9207e04244d4dee2779f9a95e4790]
Former-commit-id: 31bbd51a4d85a803a2db70ec65ca793fdec692d3
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine