CGAL 6.1 - Algebraic Kernel

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AlgebraicKernel_d_2::SignAt_2 Concept Reference
Reference Manual » Concepts » Bivariate Algebraic Kernel

## Definition

Computes the sign of a bivariate polynomial `AlgebraicKernel_d_2::Polynomial_2` at a value of type `AlgebraicKernel_d_2::Algebraic_real_2`.

Refines
  `AdaptableBinaryFunction`

See also
  `AlgebraicKernel_d_2::IsZeroAt_2`
  `AlgebraicKernel_d_1::SignAt_1`

## Types
typedef unspecified_type | result_type
| Type convertible to `CGAL::Sign`
typedef AlgebraicKernel_d_2::Polynomial_2 | first_argument_type
typedef AlgebraicKernel_d_2::Algebraic_real_2 | second_argument_type

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