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CGAL 4.8 - Algebraic Kernel

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AlgebraicKernel_d_2::CompareX_2 Concept Reference
Bivariate Algebraic Kernel

## Definition

Compares the first coordinates of `AlgebraicKernel_d_2::Algebraic_real_2`s.

Refines:
  `AdaptableBinaryFunction`

See Also
  `AlgebraicKernel_d_2::CompareY_2`
  `AlgebraicKernel_d_2::CompareXY_2`

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

## Operations
The following operators and their symmetric counterparts are required:
result_type | operator() (const first_argument_type &a, const second_argument_type &b)
| Compares the first coordinates of \( a\) and \( b\).
result_type | operator() (AlgebraicKernel_d_2::Algebraic_real_2 a, int x)
| Compares the first coordinate of \( a\) with \( x\).
result_type | operator() (AlgebraicKernel_d_2::Algebraic_real_2 a, AlgebraicKernel_d_2::Bound x)
| Compares the first coordinate of \( a\) with \( x\).
result_type | operator() (AlgebraicKernel_d_2::Algebraic_real_2 a, AlgebraicKernel_d_2::Coefficient x)
| Compares the first coordinate of \( a\) with \( x\).
result_type | operator() (AlgebraicKernel_d_2::Algebraic_real_2 a, AlgebraicKernel_d_2::Algebraic_real_1 x)
| Compares the first coordinate of \( a\) with \( x\).