Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 6/24/2024
Public

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v?y1

Computes the Bessel function of the second kind for vector elements.

Syntax

call vsy1( n, a, y )
call vsy1i(n, a, inca, y, incy)
call vmsy1( n, a, y, mode )
call vmsy1i(n, a, inca, y, incy, mode)
call vdy1( n, a, y )
call vdy1i(n, a, inca, y, incy)
call vmdy1( n, a, y, mode )
call vmdy1i(n, a, inca, y, incy, mode)

Include Files

mkl_vml.f90

Input Parameters

Name

Type

Description

n

INTEGER, INTENT(IN)

Specifies the number of elements to be calculated.

a

REAL, INTENT(IN) for vsy1, vmsy1

DOUBLE PRECISION, INTENT(IN) for vdy1, vmdy1

Array that specifies the input vector a.

inca, incy

INTEGER, INTENT(IN)

Specifies increments for the elements of a and y.

mode

INTEGER(KIND=8), INTENT(IN)

Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description.

Output Parameters

Name

Type

Description

y

REAL, INTENT(OUT) for vsy1, vmsy1

DOUBLE PRECISION, INTENT(OUT) for vdy1, vmdy1

Array that specifies the output vector y.

Description

The y1 function computes the Bessel function of the second kind of order 1 for elements of the input vector a and writes them to the output vector y.

Special Values for Real Function v?y1(x)
Argument Result VM Error Status Exception
+0 -    
-0 -    
+ +0    
x < 0 (including -) SNAN VML_STATUS_ERRDOM INVALID
QNAN QNAN    
SNAN QNAN   INVALID