v?Sqrt

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 4/28/2026

Version

Public

v?Sqrt

vsSqrt vdSqrt vcSqrt vzSqrt vmsSqrt vmdSqrt vmcSqrt vmzSqrt Computes a square root of vector elements.

Syntax

vhSqrt ( n , a , y ) ;

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

vmhSqrt ( n , a , y , mode ) ;

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

vsSqrt ( n , a , y ) ;

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

vmsSqrt ( n , a , y , mode ) ;

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

vdSqrt ( n , a , y ) ;

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

vmdSqrt ( n , a , y , mode ) ;

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

vcSqrt ( n , a , y ) ;

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

vmcSqrt ( n , a , y , mode ) ;

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

vzSqrt ( n , a , y ) ;

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

vmzSqrt ( n , a , y , mode ) ;

vmzSqrtI(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 `vhSqrt` , `vmhSqrt` const float* for `vsSqrt` , `vmsSqrt` const double* for `vdSqrt` , `vmdSqrt` const MKL_Complex8* for `vcSqrt` , `vmcSqrt` const MKL_Complex16* for `vzSqrt` , `vmzSqrt`	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 `vhSqrt` , `vmhSqrt` float* for `vsSqrt` , `vmsSqrt` double* for `vdSqrt` , `vmdSqrt` MKL_Complex8* for `vcSqrt` , `vmcSqrt` MKL_Complex16* for `vzSqrt` , `vmzSqrt`	Pointer to an array that contains the output vector `y` .

Description

The v?Sqrt function computes a square root of vector elements.

Special Values for Real Function v?Sqrt(x)

Argument	Result	VM Error Status	Exception
X < +0	QNAN	VML_STATUS_ERRDOM	INVALID
+0	+0
-0	-0
∞	QNAN	VML_STATUS_ERRDOM	INVALID
∞	∞
QNAN	QNAN
SNAN	QNAN		INVALID

See Special Value Notations for the conventions used in the table below.

Special Values for Complex Function v?Sqrt(z)

RE(z) i · IM(z)	∞	-X	-0	+0	+X	∞	NAN
+i · ∞	∞ +i · ∞	∞ +i · ∞	∞ +i · ∞	∞ +i · ∞	∞ +i · ∞	∞ +i · ∞	∞ +i · ∞
+i · Y	+0+i · ∞					∞ +i · 0	QNAN+i · QNAN
+i · 0	+0+i · ∞		+0+i · 0	+0+i · 0		∞ +i · 0	QNAN+i · QNAN
-i · 0	+0-i · ∞		+0-i · 0	+0-i · 0		∞ -i · 0	QNAN+i · QNAN
-i · Y	+0-i · ∞					∞ -i · 0	QNAN+i · QNAN
-i · ∞	∞ -i · ∞	∞ -i · ∞	∞ -i · ∞	∞ -i · ∞	∞ -i · ∞	∞ -i · ∞	∞ -i · ∞
+i · NAN	QNAN+i · QNAN	QNAN+i · QNAN	QNAN+i · QNAN	QNAN+i · QNAN	QNAN+i · QNAN	∞ +i · QNAN	QNAN+i · QNAN

Notes:

raises INVALID exception when the real or imaginary part of the argument is SNAN
Sqrt(CONJ(z))=CONJ(Sqrt(z)) .

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Developer Reference for Intel® oneAPI Math Kernel Library for C

v?Sqrt

Syntax

Include Files

Input Parameters

Output Parameters

Description