public function dataProviderForLowerIncompleteGamma() { return [[1, 2, 0.8646647167633873], [0.5, 4, 1.7641627815248433], [2, 3, 0.8008517265285442], [4.5, 2.3, 1.538974541742517], [7, 9.550000000000001, 603.9624331483415]]; }