strata::Minus¶

Part of Element-wise expressions.

struct strata::Minus;

Difference of two or more values, applied as a left fold: Minus{}(a, b, c) is (a - b) - c.

This is exactly what a - b - c computes, which is what lets a chain become one node of three operands without changing a single rounding. Constrained on -, so that asking whether it takes some values gets an answer rather than an error from inside it.