Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 6/24/2024
Public

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v?j1

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

Syntax

call vsj1( n, a, y )
call vsj1i(n, a, inca, y, incy)
call vmsj1( n, a, y, mode )
call vmsj1i(n, a, inca, y, incy, mode)
call vdj1( n, a, y )
call vdj1i(n, a, inca, y, incy)
call vmdj1( n, a, y, mode )
call vmdj1i(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 vsj1, vmsj1

DOUBLE PRECISION, INTENT(IN) for vdj1, vmdj1

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 vsj1, vmsj1

DOUBLE PRECISION, INTENT(OUT) for vdj1, vmdj1

Array that specifies the output vector y.

Description

The j1 function computes the Bessel function of the first 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?j1(x)
Argument Result VM Error Status Exception
+0 +0    
-0 -0    
+ +0    
- +0    
QNAN QNAN    
SNAN QNAN   INVALID