v?Abs

Computes absolute value of vector elements.

Syntax

FORTRAN:

call vsabs( n, a, y )

call vmsabs( n, a, y, mode )

call vdabs( n, a, y )

call vmdabs( n, a, y, mode )

call vcabs( n, a, y )

call vmcabs( n, a, y, mode )

call vzabs( n, a, y )

call vmzabs( n, a, y, mode )

vsAbs( n, a, y );

vmsAbs( n, a, y, mode );

vdAbs( n, a, y );

vmdAbs( n, a, y, mode );

vcAbs( n, a, y );

vmcAbs( n, a, y, mode );

vzAbs( n, a, y );

vmzAbs( n, a, y, mode );

Include Files

FORTRAN 77: mkl_vml.f77
Fortran 90: mkl_vml.f90
C: mkl_vml_functions.h

Input Parameters

Name	Type	Description
n	FORTRAN 77: INTEGER Fortran 90: INTEGER, INTENT(IN) C: const int	Specifies the number of elements to be calculated.
a	FORTRAN 77: REAL for vsabs, vmsabs DOUBLE PRECISION for vdabs, vmdabs COMPLEX for vcabs, vmcabs DOUBLE COMPLEX for vzabs, vmzabs Fortran 90: REAL, INTENT(IN) for vsabs, vmsabs DOUBLE PRECISION, INTENT(IN) for vdabs, vmdabs COMPLEX, INTENT(IN) for vcabs, vmcabs DOUBLE COMPLEX, INTENT(IN) for vzabs, vmzabs C: const float* for vsabs, vmsabs const double* for vdabs, vmdabs const MKL_Complex8* for vcAbs, vmcAbs const MKL_Complex16* for vzAbs, vmzAbs	FORTRAN: Array that specifies the input vector a. C: Pointer to an array that contains the input vector a.
mode	FORTRAN 77: INTEGER8 Fortran 90:* INTEGER(KIND=8), INTENT(IN) C: const MKL_INT64	Overrides global VML mode setting for this function call. See vmlSetMode for possible values and their description.

Name

Type

Description

FORTRAN 77: INTEGER

Fortran 90: INTEGER, INTENT(IN)

C: const int

Specifies the number of elements to be calculated.

FORTRAN 77: REAL for vsabs, vmsabs

DOUBLE PRECISION for vdabs, vmdabs

COMPLEX for vcabs, vmcabs

DOUBLE COMPLEX for vzabs, vmzabs

Fortran 90: REAL, INTENT(IN) for vsabs, vmsabs

DOUBLE PRECISION, INTENT(IN) for vdabs, vmdabs

COMPLEX, INTENT(IN) for vcabs, vmcabs

DOUBLE COMPLEX, INTENT(IN) for vzabs, vmzabs

C: const float* for vsabs, vmsabs

const double* for vdabs, vmdabs

const MKL_Complex8* for vcAbs, vmcAbs

const MKL_Complex16* for vzAbs, vmzAbs

FORTRAN: Array that specifies the input vector a.

C: Pointer to an array that contains the input vector a.

mode

FORTRAN 77: INTEGER*8

Fortran 90: INTEGER(KIND=8), INTENT(IN)

C: const MKL_INT64

Overrides global VML mode setting for this function call. See vmlSetMode for possible values and their description.

Output Parameters

Name	Type	Description
y	FORTRAN 77: REAL for vsabs, vmsabs, vcabs, vmcabs DOUBLE PRECISION for vdabs, vmdabs, vzabs, vmzabs Fortran 90: REAL, INTENT(OUT) for vsabs, vmsabs, vcabs, vmcabs DOUBLE PRECISION, INTENT(OUT) for vdabs, vmdabs, vzabs, vmzabs C: float* for vsabs, vmsabs, vcAbs, vmcAbs double* for vdabs, vmdabs, vzAbs, vmzAbs	FORTRAN: Array that specifies the output vector y. C: Pointer to an array that contains the output vector y.

Name

Type

Description

FORTRAN 77: REAL for vsabs, vmsabs, vcabs, vmcabs

DOUBLE PRECISION for vdabs, vmdabs, vzabs, vmzabs

Fortran 90: REAL, INTENT(OUT) for vsabs, vmsabs, vcabs, vmcabs

DOUBLE PRECISION, INTENT(OUT) for vdabs, vmdabs, vzabs, vmzabs

C: float* for vsabs, vmsabs, vcAbs, vmcAbs

double* for vdabs, vmdabs, vzAbs, vmzAbs

FORTRAN: Array that specifies the output vector y.

C: Pointer to an array that contains the output vector y.

Description

The v?Abs function computes an absolute value of vector elements.

Special Values for Real Function v?Abs(x)
Argument	Result	Exception
+0	+0
-0	+0
+∞	+∞
-∞	+∞
QNAN	QNAN
SNAN	QNAN	INVALID

Specifications for special values of the complex functions are defined according to the following formula

Abs(z) = Hypot(RE(z),IM(z)).