*Last updated: 2023-03-16.*
# Module: tf_quant_finance.math.interpolation.cubic
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Cubic spline interpolation methods.
## Classes
[`class BoundaryConditionType`](../../../tf_quant_finance/math/interpolation/cubic/BoundaryConditionType.md): Specifies which boundary condition type to use for the cubic interpolation.
[`class SplineParameters`](../../../tf_quant_finance/math/interpolation/cubic/SplineParameters.md): Cubic spline parameters.
## Functions
[`build_spline(...)`](../../../tf_quant_finance/math/interpolation/cubic/build_spline.md): Builds a SplineParameters interpolation object.
[`interpolate(...)`](../../../tf_quant_finance/math/interpolation/cubic/interpolate.md): Interpolates spline values for the given `x` and the `spline_data`.