The WT_CEIL_POS Macro is currently created for a specific use case, resulting in decimal values within the range of [.125, .25, .375, .5, .625, .75, .875]. However, there is a potential issue when dealing with smaller decimal values. For instance, calling WT_CEIL_POS(0.0000000000003) may produce an unexpected result of 0 instead of 1.

This precision concern was discussed during the PR review.

Acceptance Criteria: 

Extend the Macro WT_CEIL_POS to fix the precision concern described above.