`ABS` Expression

ABS returns the absolute value of a numeric input. The production implementation parses the input as a number and applies std::abs.

Syntax

ABS{value}

These values are already covered by ACE's expression tests and existing CLI reference material:

ABS{-7.4}   -> 7.4
ABS{-2.4}   -> 2.4
ABS{3.7}    -> 3.7
ABS{0}      -> 0

Nested numeric expressions are resolved before ABS is evaluated.