Lahey/GNU Fortran

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8.30 BESSEL_Y1 — Bessel function of the second kind of order 1

Description:
BESSEL_Y1(X) computes the Bessel function of the second kind of order 1 of X. This function is available under the name BESY1 as a GNU extension.
Standard:
Fortran 2008 and later
Class:
Elemental function
Syntax:
RESULT = BESSEL_Y1(X)
Arguments:

X The type shall be REAL, and it shall be scalar.

Return value:
The return value is a scalar of type REAL. It has the same kind as X.
Example:
          program test_besy1
            real(8) :: x = 1.0_8
            x = bessel_y1(x)
          end program test_besy1
     

Specific names:

Name Argument Return type Standard
DBESY1(X)REAL(8) X REAL(8) GNU extension