Developer Reference for Intel® oneAPI Math Kernel Library for Fortran
v?Inv
vsInv vmsInv vdInv vmdInv Performs element by element inversion of the vector.
Syntax
call vsinv(n, a, y)
call vsinvi(n, a, inca, y, incy)
call vmsinv(n, a, y, mode)
call vmsinvi(n, a, inca, y, incy, mode)
call vdinv(n, a, y)
call vdinvi(n, a, inca, y, incy)
call vmdinv(n, a, y, mode)
call vmdinvi(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 |
Fortran 77: DOUBLE PRECISION for vdinv , vmdinvFortran 90: REAL , INTENT(IN) for vsinv , vmsinvFortran 90: DOUBLE PRECISION , INTENT(IN) for vdinv , vmdinv |
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 (Sets a new mode for VM functions according to the mode parameter and stores the previous VM mode to oldmode.) for possible values and their description. |
Output Parameters
Name |
Type |
Description |
|---|---|---|
y |
Fortran 77: DOUBLE PRECISION for vdinv , vmdinvFortran 90: REAL , INTENT(OUT) for vsinv , vmsinvFortran 90: DOUBLE PRECISION , INTENT(OUT) for vdinv , vmdinv |
Array that specifies the output vector y . |
Description
The v?Inv function performs element by element inversion of the vector.
Special Values for Real Function v?Inv(x)
Argument |
Result |
VM Error Status |
Exception |
|---|---|---|---|
+0 |
|
VML_STATUS_SING |
ZERODIVIDE |
-0 |
|
VML_STATUS_SING |
ZERODIVIDE |
|
+0 |
||
|
-0 |
||
QNAN |
QNAN |
||
SNAN |
QNAN |
INVALID |