Developer Reference for Intel® oneAPI Math Kernel Library for Fortran
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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.
Argument | Result | VM Error Status | Exception |
---|---|---|---|
+0 | -∞ | ||
-0 | -∞ | ||
+∞ | +0 | ||
x < 0 (including -∞) | SNAN | VML_STATUS_ERRDOM | INVALID |
QNAN | QNAN | ||
SNAN | QNAN | INVALID |