CGAL 6.2 - Algebraic Kernel

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AlgebraicKernel_d_1::SignAt_1 Concept Reference
Reference Manual » Concepts » Univariate Algebraic Kernel

## Definition

Computes the sign of a univariate polynomial `AlgebraicKernel_d_1::Polynomial_1` at a real value of type `AlgebraicKernel_d_1::Algebraic_real_1`.

Refines
  `AdaptableBinaryFunction`

See also
  `AlgebraicKernel_d_1::IsZeroAt_1`

## Types
typedef unspecified_type | result_type
| Type convertible to `CGAL::Sign`
typedef AlgebraicKernel_d_1::Polynomial_1 | first_argument_type
typedef AlgebraicKernel_d_1::Algebraic_real_1 | second_argument_type

## Operations
result_type | operator() (const first_argument_type &p, const second_argument_type &x)
| Computes the sign of \( p\) at \( x\).