v?Abs

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 4/28/2026

Version

Public

v?Abs

vsAbs vdAbs vmsAbs vmdAbs vcAbs vmcAbs vzAbs vmzAbs Computes absolute value of vector elements.

Syntax

vhAbs ( n , a , y ) ;

vhAbsI(n, a, inca, y, incy);

vmhAbs ( n , a , y , mode ) ;

vmhAbsI(n, a, inca, y, incy, mode);

vsAbs ( n , a , y ) ;

vsAbsI(n, a, inca, y, incy);

vmsAbs ( n , a , y , mode ) ;

vmsAbsI(n, a, inca, y, incy, mode);

vdAbs ( n , a , y ) ;

vdAbsI(n, a, inca, y, incy);

vmdAbs ( n , a , y , mode ) ;

vmdAbsI(n, a, inca, y, incy, mode);

vcAbs ( n , a , y ) ;

vcAbsI(n, a, inca, y, incy);

vmcAbs ( n , a , y , mode ) ;

vmcAbsI(n, a, inca, y, incy, mode);

vzAbs ( n , a , y ) ;

vzAbsI(n, a, inca, y, incy);

vmzAbs ( n , a , y , mode ) ;

vmzAbsI(n, a, inca, y, incy, mode);

Include Files

mkl.h

Input Parameters

Name	Type	Description
`n`	const MKL_INT	Specifies the number of elements to be calculated.
`a`	const _Float16* for `vhAbs` , `vmhAbs` const float* for `vsAbs` , `vmsAbs` const double* for `vdAbs` , `vmdAbs` const MKL_Complex8* for `vcAbs` , `vmcAbs` const MKL_Complex16* for `vzAbs` , `vmzAbs`	Pointer to an array that contains the input vector `a` .
`inca` , `incy`	const MKL_INT	Specifies increments for the elements of `a` and `y` .
`mode`	const MKL_INT64	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`	_Float16* for `vhAbs` , `vmhAbs` , `vcAbs` , `vmcAbs` float* for `vsAbs` , `vmsAbs` , `vcAbs` , `vmcAbs` double* for `vdAbs` , `vmdAbs` , `vzAbs` , `vmzAbs`	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

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

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Developer Reference for Intel® oneAPI Math Kernel Library for C

v?Abs

Syntax

Include Files

Input Parameters

Output Parameters

Description