This PR makes the same modification as the previous PR, but in fd1d. ds now remains (nearly) constant during a sweep of block length, rather than ns. fd1d unit tests all pass, and a quick test of a block length sweep was performed to ensure that the intended behavior occurs, and it works as intended.
This PR makes the same modification as the previous PR, but in fd1d. ds now remains (nearly) constant during a sweep of block length, rather than ns. fd1d unit tests all pass, and a quick test of a block length sweep was performed to ensure that the intended behavior occurs, and it works as intended.