Developer Reference for Intel® oneAPI Math Kernel Library for Fortran
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v?jn
Computes the Bessel function of the first kind for vector elements.
Syntax
call vsjn( n, a, b, y ) call vsjni(n, a, inca, b, y, incy) call vmsjn( n, a, b, y, mode ) call vmsjni(n, a, inca, b, y, incy, mode) call vdjn( n, a, b, y ) call vdjni(n, a, inca, b, y, incy) call vmdjn( n, a, b, y, mode ) call vmdjni(n, a, inca, b, 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 vsjn, vmsjn DOUBLE PRECISION, INTENT(IN) for vdjn, vmdjn |
Array that specifies the input vector a. |
b |
REAL, INTENT(IN) for vsjn, vmsjn DOUBLE PRECISION, INTENT(IN) for vdjn, vmdjn |
Scalar value b that is the constant order. |
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 vsjn, vmsjn DOUBLE PRECISION, INTENT(OUT) for vdjn, vmdjn |
Array that specifies the output vector y. |
Description
The jn function computes the Bessel function of the first kind of a given order b for elements of the input vector a and writes them to the output vector y.
Argument | Result | VM Error Status | Exception |
---|---|---|---|
+0 | +0 | ||
-0 | -0 | ||
+∞ | +0 | ||
-∞ | +0 | ||
QNAN | QNAN | ||
SNAN | QNAN | INVALID |