v?Rint

Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

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ID 766686

Date 11/07/2023

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v?Rint

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	INTEGER, INTENT(IN)	Specifies the number of elements to be calculated.
a	DOUBLE PRECISION for vdrint, vmdrint REAL, INTENT(IN) for vsrint, vmsrint 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	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 vdrint, vmdrint REAL, INTENT(OUT) for vsrint, vmsrint DOUBLE PRECISION, INTENT(OUT) for vdrint, vmdrint	Array that specifies the output vector y.

Name

Type

Description

DOUBLE PRECISION for vdrint, vmdrint

REAL, INTENT(OUT) for vsrint, vmsrint

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

Parent topic: Rounding Functions

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Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

v?Rint

Syntax

Include Files

Input Parameters

Output Parameters

Description