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9.40 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:
XThe type shall be REAL.
Return value:

The return value is 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:
NameArgumentReturn typeStandard
DBESY1(X)REAL(8) XREAL(8)GNU extension