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JacobiNormSQRRatio

This function returns the ratio of Square norm of Jacobi polynomial n+1/n

This function returns the following:

∥Pnα,β∥dλ2=∫−1+1Pnα,βPnα,β(1−x)α(1+x)βdx\Vert P_{n}^{\alpha,\beta}\Vert_{d\lambda}^{2}=\int_{-1}^{+1}P_{n}^ {\alpha,\beta}P_{n}^{\alpha,\beta}(1-x)^{\alpha}(1+x)^{\beta}dx 
INTERFACE
  MODULE PURE FUNCTION JacobiNormSQRRatio(n, alpha, beta) RESULT(ans)
    INTEGER(I4B), INTENT(IN) :: n
    REAL(DFP), INTENT(IN) :: alpha
    REAL(DFP), INTENT(IN) :: beta
    REAL(DFP) :: ans
  END FUNCTION JacobiNormSQRRatio
END INTERFACE