v?Rint

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 10/15/2026

Version

Public

v?Rint

vsRint vmsRint vdRint vmdRint Computes a rounded integer value in the current rounding mode.

Syntax

call vsrint(n, a, y)
call vsrinti(n, a, inca, y, incy)
call vmsrint(n, a, y, mode)
call vmsrinti(n, a, inca, y, incy, mode)
call vdrint(n, a, y)
call vdrinti(n, a, inca, y, incy)
call vmdrint(n, a, y, mode)
call vmdrinti(n, a, inca, y, incy, mode)

Include Files

mkl_vml.f90

Input Parameters

Name	Type	Description
`n`		Specifies the number of elements to be calculated.
`a`	Fortran 77: DOUBLE PRECISION for `vdrint` , `vmdrint`Fortran 90: REAL , INTENT(IN) for `vsrint` , `vmsrint`Fortran 90: DOUBLE PRECISION , INTENT(IN) for `vdrint` , `vmdrint`	Array that specifies the input vector `a` .
`inca` , `incy`	INTEGER, INTENT(IN)	Specifies increments for the elements of `a` and `y` .
`mode`		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`	Fortran 77: DOUBLE PRECISION for `vdrint` , `vmdrint`Fortran 90: REAL , INTENT(OUT) for `vsrint` , `vmsrint`Fortran 90: DOUBLE PRECISION , INTENT(OUT) for `vdrint` , `vmdrint`	Array that specifies the output vector `y` .

Description

The v?Rint function computes a rounded floating-point integer value using the current rounding mode for each vector element.

The rounding mode affects the results computed for inputs that fall between consecutive integers. For example:

f(0.5) = 0 , for rounding modes set to round to nearest round toward zero or to minus infinity.
f(0.5) = 1 , for rounding modes set to plus infinity.
f(-1.5) = -2 , for rounding modes set to round to nearest or to minus infinity.
f(-1.5) = -1 , for rounding modes set to round toward zero or to plus infinity.

Special Values for Real Function v?Rint(x)

Argument	Result	Exception
+0	+0
-0	-0
∞	∞
∞	∞
SNAN	QNAN	INVALID
QNAN	QNAN

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

v?Rint

Syntax

Include Files

Input Parameters

Output Parameters

Description