Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 3/31/2023
Public

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v?Inv

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

DOUBLE PRECISION for vdinv, vmdinv

REAL, INTENT(IN) for vsinv, vmsinv

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 for possible values and their description.

Output Parameters

Name

Type

Description

y

DOUBLE PRECISION for vdinv, vmdinv

REAL, INTENT(OUT) for vsinv, vmsinv

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