# Rational.LessThan Operator (Rational, Rational)

**Solver Foundation 3.0**

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Returns a value that indicates whether a rational number is less than another rational number.

**Namespace:**Microsoft.SolverFoundation.Common

**Assembly:**Microsoft.Solver.Foundation (in Microsoft.Solver.Foundation.dll)

#### Parameters

- rat1
- Type: Microsoft.SolverFoundation.Common.Rational

A rational value.

- rat2
- Type: Microsoft.SolverFoundation.Common.Rational

Another rational value.

#### Return Value

Type: System.Booleantrue if the rat1 parameter is less than the rat2 parameter; otherwise, false.

- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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