The following actions uses node12 which is deprecated and will be forced to run on node16: actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

In dmnorm, prec_param with value = 0 is a variable but will be fixed in the tape until the tape is reset. Make prec_param a constant to avoid this warning.