v?Rint

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 4/28/2026

Version

Public

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

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)

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.

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` .

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)