How to apply data normalization to avoid precision loss?

Dear GMT community,

Documentation of grdconvert and grdmath indicates that regardless of the precision of the input, GMT uses only 4-byte floating points, and it is recommended to apply a normalization before doing operations with GMT.

I wondering if you could provide me an example in how to normalize data or a reference that explain how to achieve this.

Thank you very much

Perhaps you can explain what data grid you have that has precision beyond 4-byte floats and what operations you need to perform. There is no general answer unless we understand your case better.