Returns unsigned, smallest angle between v1 and v2

The length of the lattice vector in the unit cell. Units: Angstrom @{ */

* Calculate the bond angle between two bond vectors. * @param b0 The first bond vector (a-b) * @param b1 The second bond vector (b-c) * @return The

Decrement the reference count, return true unless the reference count has dropped to zero. When it returns false, this object should be deleted.

* @brief Efficient method to confirm input ends with the ending string. * @param input String to be examined. * @param ending String that will be se

note: all regions must have same fdim */

* @brief Get the file name (if known). * @return The full path to the file name as supplied, can be empty. */

Create a cube filled with distance-from-origin values Isosurface at value=r gives a sphere of radius r

Detect dark mode: text lighter than window background

Check if FLAG_BATCH_MODE is set in the request flags.

Helper to create orbital description string e.g., "HOMO-1" or "alpha-HOMO" prefix is supplied for alpha/beta orbitals as UTF-8 characters