v?Abs

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 12/16/2022

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Public

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v?Abs

Computes absolute value of vector elements.

Syntax

call vsabs( n, a, y )

call vsabsi(n, a, inca, y, incy)

call vmsabs( n, a, y, mode )

call vmsabsi(n, a, inca, y, incy, mode)

call vdabs( n, a, y )

call vdabsi(n, a, inca, y, incy)

call vmdabs( n, a, y, mode )

call vmdabsi(n, a, inca, y, incy, mode)

call vcabs( n, a, y )

call vcabsi(n, a, inca, y, incy)

call vmcabs( n, a, y, mode )

call vmcabsi(n, a, inca, y, incy, mode)

call vzabs( n, a, y )

call vzabsi(n, a, inca, y, incy)

call vmzabs( n, a, y, mode )

call vmzabsi(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 vdabs, vmdabs COMPLEX for vcabs, vmcabs DOUBLE COMPLEX for vzabs, vmzabs 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	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 vdabs, vmdabs, vzabs, vmzabs REAL, INTENT(OUT) for vsabs, vmsabs, vcabs, vmcabs DOUBLE PRECISION, INTENT(OUT) for vdabs, vmdabs, vzabs, vmzabs	Array that specifies the output vector y.

Name

Type

Description

DOUBLE PRECISION for vdabs, vmdabs, vzabs, vmzabs

REAL, INTENT(OUT) for vsabs, vmsabs, vcabs, vmcabs

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

Array that specifies 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)).

Parent topic: Arithmetic Functions

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

v?Abs