.check_truncation_bounds: Validate truncation bounds L and D
Description
Internal function to validate that L (lower truncation) and D (upper
truncation) parameters are valid: L must be non-negative and less than D.
Usage
.check_truncation_bounds(L, D)
Value
Invisible NULL if valid, otherwise stops with an error message.
Arguments
- L
Lower truncation bound
- D
Upper truncation bound